Obstetrics Flashcards

1
Q

1st Trimester

A

1-12 weeks

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2
Q

2nd Trimester

A

13-26/27 weeks

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3
Q

3rd trimester

A

28-40 weeks

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4
Q

Baseline foetal heart rate (FHR)

A

110- 160 bpm

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5
Q

Baseline FHR variability

A

Normal: 6-25 bpm
Reduced: 3-5 bpm
Absent: < 3bpm
Increased (salutatory): > 25 bpm

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6
Q

FHR accelerations

A

Transient increase in FHR of 15 bpm lasting 15 sec

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7
Q

FHR decelerations

A

transient episodes of decreased FHR below baseline more than 15 bpm for at least 15 sec
- often pathological

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8
Q

Types of FHR decelerations

A

Early
Variable
Prolonged
Late

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9
Q

Early FHR decelerations

A
  • benign & physiological
  • 4-8cm cervical dilation
  • mirror contraction
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10
Q

Variable FHR decelerations

A
  • repetitive/intermittent
  • in association with other non-reassuring/abnormal features are pathological
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11
Q

Late FHR decelerations

A
  • uniform, repetitive decrease
  • slow onset at mid to end of contraction
  • caused in the presence of hypoxia (foetus already hypoxic)
  • decelerations less than 5-15 bpm
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12
Q

Reassuring CTG findings

A
  • baseline FHR 110- 160
  • No late or variable FHR decelerations
  • Moderate FHR variability (6-25 bpm)
  • age-appropriate FHR accelerations
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13
Q

Abnormal CTG findings any

A

ANY OF THE FOLLOWING
- Baseline FHR <100 bpm or >170 bpm
- Absent variability < 3 bpm
- Prolonged decelerations for > 3 bpm OR late OR complicated variables

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14
Q

Abnormal CTG findings >2

A

AT LEAST 2 OF THE FOLLOWING:
- Baseline FHR between 100-109 bpm
- Baseline FHR between 160 -170 bpm
- FHR variability is reduced (3-5 bpm for > 40 mins)
- Variable decelerations without complicating features

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15
Q

Abnormal CTG, what’s the next step

A
  1. Stop syntocinon (give blood to baby)
  2. foetal scalp sampling unless contraindicated (lactate high, pH low) give C-sec
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16
Q

CTG high risk vs low risk

A

High risk: mandatory obstetrical intervention
Low risk: limited value, and can lead to unnecessary obstetrical intervention

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17
Q

Pregnancy screening test

A

Before conception: Rubella
10-12 weeks: Chorionic villus sampling (CVS) Rh negative women need Rh D immunoglobulin (anti-D)
15-17 weeks: Maternal serum screening (alpha fetoprotein, estriol, and beta-HCG ) for Down syndrome
16-18 weeks: Amniocentesis
18-20 weeks: Ultrasound for identification of physical abnormalities (NTD)

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18
Q

First antenatal visit time frame

A

Within 10 weeks

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19
Q

Antenatal screening protocol

A
  • every four weeks until 28 weeks
  • every two weeks until 36 weeks
  • every week until 40 weeks or delivery
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20
Q

Spina bifida investigation

A

US of foetal spine at 16-18 weeks

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21
Q

Tenderness of the right lower part of the uterus indicates

A
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22
Q

Indications to use ant-D

A

-Spontaneous abortion.
-External cephalic version.
-Significant closed intra-abdominal trauma.
-Termination of pregnancy.
-Chorionic Villus Sampling.
-Ectopic pregnancy.
-Threatened abortion after 12 weeks of gestation

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23
Q

Doppler studies result

A
  • increase in end-diastolic flow velocity relative to peak systolic velocity
  • S/D ratio to decreases with advancing gestation
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24
Q

Increase in S/D ratio is associated with

A
  • increased resistance in the placental vascular bed
  • can be noted in pr-eclampsia or festal growth retardation
  • Nicotine and maternal smoking increase S/D ratio
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25
Teenage pregnancy complication
- maternal poor weight gain - premature delivery - low birth weight - increased risk of pregnancy-induced hypertension - increased risk of violence
26
Rectus sheath haematoma causes
- anticoagulation therapy - severe cough - pregnancy - previous or recent abdominal surgery - abdominal trauma - chronic kidney disease - steroid/immunosuppressive therapy - vigorous uncoordinated rectus muscle contraction
27
Features of Placental abruption
- PAINFUL vaginal bleeding or without bleeding (concealed bleeding) - uterine tenderness - foetal compromise on CTG
28
Features of Placenta previa
- painless vaginal bleeding (low in comparison to other forms) - with or without uterine tenderness (AMC handbook) - foetal compromise on CTG (can also be without AMC handbook) - tender rigid abdomen
29
Vasa previa feature
Carries minimal maternal risk but has serious fetal risk - no bleeding when ROM ∗ Causes fresh painless vaginal bleeding when membranes rupture just before labour starts ∗ Can be detected by transvaginal ultrasound ∗ If detected early, c – c-section will be done between 34 to 37 weeks
30
31
Trying for pregnancy after miscarriage/abortion
Wait one menstrual period after abortion
32
pregnant women with Myasthenia Gravis with pre-eclampsia
magnesium sulphate is contraindicated. as it impairs already slowed nerve muscle connections
33
Platelet count that is considered safe in pregnancy
50000/mm3
34
Safe platelets count for regional anaesthesia
70000-100000/mm3
35
Causes of thrombocytopenia in pregnancy
- Gestational/incidental thrombocytopenia (most common) - Acute fatty liver - HELLP syndrome - Pre-eclampsia - Eclampsia
36
HELLP Syndrome stands for
H- haemolysis EL -elevated liver enzyme levels LP -low platelet levels
37
HELLP Syndrome features
- average between 32-34 weeks - postpartum in up to 30% of cases - right upper quadrant pain or epigastric pain - nausea, vomiting, and malaise - hypertension 80% - low level proteinuria 5-15% - AST/ALT elevated secondary to liver dysfunction - High blood urea and creatinine with acute renal failure - bilirubin level is increased secondary to haemolysis
38
Pre-eclampsia dx
>20 weeks + Hypertension (1st symptom) + end-organ damage such as ankle and facial edema or placental insufficiency - proteinuria (2nd symptom) after 20 weeks -headache, dizziness and abdominal pain just below the ribs.
39
Severe pre-eclampsia dx
BP > 160/110mmHg + proteinuria
40
Pre-eclampsia ddx
gestational hypertension acute fatty liver
41
Proteinuria in pre-eclampsia
>300g protein in 24hr urine
42
protein to creatinine ratio
Used to diagnose pre-eclampsia - >30mmol
43
Risk of pre-eclampsia
- Previous eclampsia [7x] - Chronic hypertension [5] - Pre-existing diabetes [4x] - Multiple pregnancy (twin) [3x] - Autoimmune disease (SLE, antiphospholipid syndrome) [3x] - Nulliparity [3x] - 1st degree family history [3x} - Age >40 [2x] - Pre-existing kidney disease [2x] - BMI > 30 [2x] - Prolonged interpregnancy interval
44
gestational hypertension features
> 20 weeks - without pre-eclampsia features - resolves within 3 months after delivery - good prognosis
45
gestational hypertension investigation
**monitor to exclude development of pre-eclampsia** - if BP >140/90: start antihypertensives - aim to maintain BP at 110-140/80-90
46
Symphyseal fundal height
gestational age +- 2 - if low check for pre-eclampsia
47
Medication for hypertension
Moderate: - Methyldopa - labetalol/atenolol - Nifedipine Severe: - IV Hydralazine 5mg bolus every 20 min
48
Methyldopa in postpartum period
- Cease as it can increase risk of postpartum depression - Switch to enalapril - Add nifedipine if above don't work (acts very quickly)
49
Criteria for gestational thrombocytopenia
- mild/asymptomatic thrombocytopenia - no past hx (unless previous pregnancy) - no foetal thrombocytopenia association - spontaneous resolution upon delivery
50
Obstetric cholestasis features
- late second and early third trimester of pregnancy - **pruritus** and rash on the palms of the feet worse at night - increased serum bile acids and other liver function tests. - **jaundice uncommon but could be present** - 40% of recurring in subsequent pregnancies
51
Obstetric cholestasis investigation
weekly LFT - increased ALP - mildly increased AST/ALT & bilirubin Monitor foetus - deliver if distressed
52
Obstetric cholestasis prognosis
- usually clears up rapidly after delivery - often recurs in future pregnancies or using OCP (which are contraindicated)
53
Obstetric cholestasis treatment
- relieve bile acids with ursodeoxycholic acids - antihistamine/emollients
54
Obstetric cholestasis complications
- foetal distress/death - preterm delivery - meconium ingestion - meconium aspiration syndrome
55
Acute fatty liver features
**Life threatening** - Late 3rd trimester/ early postpartum period (35-36 weeks) - 1 in 10000 pregnancies - mortality rate 50% - Jaundice prevalent
56
Acute fatty liver causes
disordered fatty acid metabolism by mitochondria in mother - due to LCHAD enzyme deficiency - hepatotoxic agents given to mother
57
Acute fatty liver complications
- ascites - pancreatitis - liver encephalopathy - disseminated intravascular coagulation (DIC)
58
Acute fatty liver dx
Liver failure -increased AST + ALT (200) - increased bilirubin - ALP normal
59
Acute fatty liver investigation
Liver biopsy confirms dx
60
Acute fatty liver management
- DRABCD - Admission to ICU - Termination of pregnancy (lifesaving for both mother and baby) - prevent/treat DIC - may require liver transplant
61
Foetal
62
Uterine hyperstimulation
more than 5 active labour contractions in 10 minutes (tachysystole) - contractions lasting more than 2 mins/ occurring within 60 secs of each other (hypertonus)
63
Umbilical cord prolapse
- Variable decelerations - persistent foetal bradycardia - prolonged decelerations for over 1 minute
64
Umbilical cord prolapse
-PPROM. -Polyhydramnios -Breech presentation. -Multiparity. -Multiple gestations. -GDM increasing the risk of polyhydramnios, fetal malpresentation, premature rupture of membrane.
65
Hypertension in pregnancy
- primary pulmonary hypertension is a contraindication - increases the risk of pre-eclampsia - increases the risk of foetal growth restriction - Daily intake of 1000mg of calcium to reduce incidence of hypertensive disorders and preterm labour
66
Varicella Zoster (Chickenpox)
- Check mothers IgG status for antibodies: positive = no further action needed negative = within first 96 hours, give immunoglobulin (VZIG)
67
Varicella Zoster (Chickenpox) screening
1st trimester if no prior/uncertain history
68
Varicella prophylaxis
Acyclovir (1st line) valaciclovir: -2nd half of pregnancy - underlying history of lung disease - smoker - immunocompromised
69
Varicella management IgM+
without complications: - Rash < 24 hours - give oral antivirals (acyclovir) Rash >24 hours - no treatment is required. With complications / immunocompromised: - Intravenous acyclovir
70
Varicella management in a px that is infected/ symptomatic about to deliver
Presentation of the symptoms >7 days before delivery: - No VZIG required. - No isolation required. - Encourage breastfeeding Maternal chickenpox 7 days before to 2 days after birth: - Give newborn VZIG 200 1U bone vial) intramuscularly (IM) immediately after birth. VZIG should be given as soon as possible within the first 24 hours of birth but may be given up to 72 hours. - Discharge term neonates as soon as possible. - No isolation required. - Encourage breastfeeding. Maternal chickenpox > 2 to 28 days after birth: - If neonate < 28 weeks gestation or 1000 g birth weight, give VZIG (preferably within 96 hours but can be given up to 10 days post-maternal rash. - Due to the increased risk of severe varicella in newborns of seronegative women (if the mother has no personal history of infection with VZV), give VZIG to neonates exposed to varicella between 2 to 28 days of age. - Discharge term neonates as soon as possible. - No isolation required. - Encourage breastfeeding.
71
Vaccines that are contraindicated in pregnancy
- Varicella Zoster (chicken pox) - Rubella - Measles
72
Pertussis DPTa
- can give vaccine - usually recommended at 28 weeks
73
Effects of oxytocin
- uterine stimulation - antidiuretic - mammary gland stimulation - labor induction
74
Foods that should be avoided during pregancy
- Dairy: soft cheese, soft serve ice cream, unpasteurised - Smoked salmon, trout
75
Eating soft cheese/salmon increases the risk of
Listeriosis (meningitis, meningoencephalitis)
76
PROM vs PPROM
PPROM ( premature) - <37 weeks
77
Preterm Pre-Rupture of Membranes (PPROM)
- Rupture of foetal membranes before labour at any gestational age - 50% progression into labour with 24 hrs - 80% in 7 days - preterm delivery - presence of liquor flow from the cervical os - pooling of liquor flow in the posterior vaginal fornix - Neonatal complications -intrauterine infections (chorioamnionitis) NOTE: DON'T DO bimanual examination due to high risk of infections
78
Preterm Pre-Rupture of Membranes (PPROM) ddx
- fluid loss - urinary incontinence -
79
PPROM risks
- cord prolapse - preterm labour - placental abruption - chorioamnionitis - foetal pulmonary hypoplasia/ other features of prematurity - limb positioning defects - perinatal mortality
80
PPROM Investigation
**Tests for amniotic fluid** * **Amnisure test**- immuno chromatographic assay test * **Nitrazine test**- litmus test. If pH >6.5 it is amniotic fluid * Fern test- fern like pattern of vaginal fluid when taken on a slide **Swabs to be taken** ∗ High vaginal swab for M/C&S ∗ Low vaginal swab for GBS **Blood investigations** ∗ FBE, ESR/CRP, UCE, FBS, LFT Urine MCS
81
Preterm Pre-Rupture (PPROM) of Membranes management AB
* Steroids * ∗ **I/V Benzyl penicillin** for 48 hours or till delivery happens whichever is earlier * ∗ Then **oral erythromycin for 10 days** * ∗ If penicillin hypersensitivity **:I/V Cephazolin** * ∗ If penicillin anaphylaxis I/V **Clindamycin **for 48 hours and then oral * erythromycin for10 days * ∗ Further benzyl penicillin prophylaxis during labour
82
Preterm Pre-Rupture (PPROM) of Membranes management
* **< 34 weeks**, no IOL unless complications in mom or baby. steroids, tocolysis if going for labour. Monitor vitals, FBE/ CRP daily for 3 days and then biweekly * **< 30 weeks,** infusion with Mg SO4 for potential fetal neuroprotection * **34- 36 + 6 weeks**, IOL after assessing risks and benefits - Other wise same as above * **GBS positive** prompt induction of labour or C- section, from 34 weeks after steroids * **signs of infection** or fetal compromise, immediate delivery by induction or C- section after steroids up to 36+ 6 weeks
83
Foetal fibronectin (fFN)
∗ Screening test for preterm labour ∗ By taking cervical or vaginal swab and doing enzyme immunoassay ∗ Negativity is more specific than positivity ∗ If –ve, patient won’t deliver within next 7-10 days ∗ If +ve, patient might deliver within 7-10 days criteria: - Intact foetal membranes - Cervical dilation less than 3 cm - Gestational age of between 22 +0d - 34+6d weeks
84
Preterm labour criteria
* < 36 + 6 weeks * Contractions occurring at 5-10 minutes interval and lasting for 30sec- 1 minute * Cervix dilated >2.5 cm * Fibronectin test positive
85
Preterm labour dx
1. history two or more miscarriages occurring after the 12th weeks gestation, usually starting with painless leaking of amniotic fluid 2. The easy passage of a size 9 cervical dilator through the internal os of the cervix when the woman is not pregnant, and the absence of a ‘snap’ on its withdrawal 3. cervical length of **less than 25mm** or cervical funnelling >40% prior to 24 weeks gestation
86
Preterm labour causes
- idiopathic 40% - cervical incompetence - multiple pregnancy - polyhydramnios - uterus abnormalities, septum - infections: GBS, measles, SMV, UTI - DM - haemorrhage: pre-eclampsia
87
Preterm labour MX
* Admission in tertiary hospital with NICU * Steroids- To prevent RDS in newborn Betamethasone 11.4 mg I/M 2 doses, 12- 24 hours apart * Tocolytic Medication to prevent uterine contractions Most commonly used- ** nifedipine** Other tocolytics- salbutamol
88
Labour induction indications
- pre-eclampsia - IVF - IUGR - Cephalic presentation
89
Contraindications of labour
- Signs of chorioamnionitis - antepartum haemorrhage - request of mother - neonatal jeopardy
90
Features of Inefficient or incoordinate labour
- Usually no moulding of the foetal head - +/- caput formation of foetal head - usually absent cervical oedema - + tachycardia - Can be above or below IS - Usually < 1 finger breadths of head palpable above the pelvic brim when the lowest point of the head is at the IS
91
Features of obstructed labour
- ++ moulding of foetal head - ++ caput formation on foetal head - anterior lip cervical oedema - ++ progressive foetal tachycardia - just at or above the ischial spines (IS) > 2 finger breadths of head palpable above the pelvic brim when the lowest point of the head is at the IS
92
Features of chorioamnionitis
- increased WBC (>15x 10^9/L) -Maternal tachycardia >100 bpm - foetal tachycardia > 160 bpm - uterine tenderness - offensive vaginal discharge - CRP > 40
93
Tocolysis contraindication
- chorioamnionitis (absolute)
94
Measles (MMR) during pregnancy
- Notifiable disease therefore contact tracing - **Immunoglobulin is used as prophylactic only, not for established** - symptomatic treatment
95
Measles incubation period
10-14 days
96
Measles symptoms
- fever - malaise - cough - coryza - conjunctivitis - white spots surrounded by red ring in the buccal mucosa (Koplik's) - **maculopapular rash 2-4 days after initial symptoms** - **infection periods start 2 days after rash onset, 4 days after eruption**
97
Measles complications in children
- Otitis media 7% - Bronchopneumonia 6% - acute encephalitis 2-10/10000
98
Measles complications in mother
- preterm labour - spontaneous abortion - foetal/neonatal loss - maternal mortality
99
Placental abruption
- separation of placenta from uterus - 3rd trimester bleeding - foetal morbidity and mortality - MVA
100
Placental abruption symptoms
- vaginal bleeding 80% - Abdominal/back pain 70% - uterine tenderness 70% - abnormal uterine contractions - 35% - idiopathic premature labour - 25% - foetal death 15% -hypofibriogemia
101
Placental abruption with no foetal heart sounds, what to do next
foetus is dead. Commence amniotomy as it'll induce spontaneous labour
102
Rubella in pregnancy
- check serology (IgM and IgG) (IgG titer of = >than 10 IU/ml) - Rubella infection in the first trimester (<8 weeks) causes severe foetal anomalies 85% - If infected termination is recommended
103
rubella symptoms
- usually asymptomatic 25- 50% cases - low grade fever - transient erythematous rash - post- auricular/ sub-occipital nodes lymphadenopathy Maculopapular rash on the face and spreads to trunk and extremities (resolves within 3 days)
104
Rubella infection during pregnancy
- <8 weeks 85% foetal infection (congenital rubella syndrome) - 8< - <12: 50 - 80% infected 65 -85 **clinically** infected - 13 -16 weeks 30% infected, 1/3 have sensorineural deafness - 16 -19 weeks: 10% infected, clinical features rare - > 19 weeks: no apparent risk
105
Rubella vaccinated before pregnancy
Reassure if not exposed to Rubella
106
Rubella abnormalites
- CNS dysfunction 10 25% (intellectual impairment developmental delay, microcephaly) - eye 10 -25% (cataracts, retinopathy, glaucoma) - sensorineural deafness 60-75% cardiac 10-20% (PDA wide pulse pressure, PA stenosis, ) - intrauterine growth restriction, short stature - inflammatory lesions (brain, liver, lungs, bone marrow
107
Hyperemesis gravidarum
- nausea and vomiting at 5-6 weeks of gestation, peaking at 9 weeks -Weight loss (more than 5% of weight) -Ketosis - urine analysis to check for hydration status
108
School exclusion
Measles: 5 days Mumps: 9 days Rubella: 5 days
109
Incarcerated uterus
- pregnant uterus entrapped in the pelvis by subpromontary sacrum - retroverted uterus?
110
Episiotomy haematoma management
- < 3cm conservative management - > 3cm surgical excision/exploration
111
Most serious cause of Hyperemesis gravidarum
- Hypokalemia - On ECG: such as inverted T waves and prolonged QT and PR intervals
112
Hyperemesis
113
Pregnancy-Unique Quantification of Emesis (PUQE-24) score 4-6
- Ginger 250mg orally, 4 times/day Pyridoxine (Vit B6) 10-25mg 3-4 times/day
114
Pregnancy-Unique Quantification of Emesis (PUQE-24) score 7 -12
Cyclizine 12.5-50mg oral 3/d Promethazine 10-25mg oral 3/day Prochlorperazine 5-10mg oral 3-4/day **Metoclopramide 10mg oral/IV/IM** Domperidone 10mg 3/day Ondesatron 4-8mg oral/IV
115
Pregnancy-Unique Quantification of Emesis (PUQE-24) score > 13
Hydrocortisone IV 100mg 2/day Prednisolone 40-50mg oral 1/day
116
Hyperemesis gravidarum excessive vomiting may lead to the following
- Hyponatremia - caused by vomiting and Gl loss - Hypokalemia - caused by vomiting and Gl loss - Hypochloremic alkalosis - caused by vomiting and GI loss - Ketosis - resulting from decreased oral intake, starvation and dehydration - Abnormal liver enzymes (ALT>AST) - Increased serum amylase and lipase - Vitamin deficiency in pregnancy (very rare)
117
Hyperemesis gravidarum mx
1st line: metoclopramide 2nd line: Ondansetron if metoclopramide doesn't' work 3rd: steroids (prednisolone) last resort
118
Placenta previa management
management depends on gestation duration: - < 37 weeks even with large amounts of bleeding can be safely monitored - > 37 weeks with bleeding delivery through C section
119
Hyperthyroidism in Pregnancy
- Check TSH and free T4 foetus: - foetal tachycardia - small gestational size - premature/stillborn - Graves - if px
120
Hyperthyroidism medication
- radioactive iodine therapy if patient is not pregnant (postpone pregnancy for 6 months) - PTU if already pregnant - Don't give carbimazole in first trimester as if causes scalp defects
121
Imminent eclampsia dx
-BP > 160mm/hg on 2 occasions 6 hours apart - Proteinuria of > 5g - cerebral/visual disturbances drowsiness, droopy eyelids - pulmonary oedema
122
Eclampsia dx
-seizures
123
Eclampsia management
IV diazepam with Magnesium sulphate (phenytoin teratogenic)
124
Features of magnesium sulphate toxicity
- respiratory rate < 12 breaths/minute - urine output < 100mLs in 4 hours (renal insufficiency) - loss of patellar reflexes; further seizures occur - Muscle paralysis and respiratory difficulty at >7.5 mmol/L - cardiac arrest at levels greater than >12 mmol/L
125
magnesium sulphate toxicity treatment
serum magnesium level is >3.5mmol/L, cease infusion and consult with obstetrician
126
foetal growth restriction causes
1. intrauterine restriction - Maternal hypertension (SLE, lupus nephritis) 2. Congenital - Trisomy 21, 18, 13 Turner's 3. Infections -- Cytomegalovirus (CMV) /intrauterine infection 4. Maternal - smoking, alcohol, phenytoin
127
Most common viral cause of birth defects
CMV
128
Features of CMV
- maternal primary infection often asymptomatic - IgG seropositive up to 50% of pregnant women - Transplacental foetal infection is 50% with primary infection
129
CMV symptoms
- retardation - microcephaly - seizures - hearing deficits - chorioretinitis - optic atrophy - brain architectural changes
130
CMV dx
combination of foetal ultrasound, amniocentesis + /- foetal serology **definite diagnosis of foetal infection is by amniocentesis**
131
CMV serology protocol
IgM-ve/IgG-ve: No CMV infection/susceptible **IgM-ve/IgG+ve: repeat serology after 2 weeks** IgM+ve/IgG+ve: Test immediately/repeat testing - low: recent primary infection - intermediate: not sure if primary - high: past infection
132
Anaemia in pregnancy
< 100g/L
133
Secondary postpartum haemorrhage
24 hours - 12 weeks - bright red haemorrhage - fever - Scant lochia **bright red**, brown red - **retained products of conception (RPOC)** endometritis ddx: look for bleeding colour
134
Postpartum endometritis risk factors
-**C Section delivery** (most common) - Young maternal age. -Multiple digital cervical examinations. -Prolonged rupture of membranes. -Retention of placental products. -Prolonged labour. -Chorioamnionitis
135
Folic acid deficiency cause
- Neural Tube Defects (NTD)
136
Phenytoin in pregancy
- Phenytoin is teratogenic - Enzyme inducer
137
Folic acid during pregnancy
- 0.5mg recommended dose - 1 month before conception to 3 months after - 5 mg unless: - family history of NTD - Enzyme inducing medication (epileptic) - BMI > 35 – Pre-pregnancy diabetes – Risk of malabsorption syndrome – A family history of congenital heart disease – Multiple pregnancy
138
Uterine rupture features
- **foetal bradycardia** - **previous uterine surgery (C -section)** - constant abdominal pain - intraabdominal haemorrhage signs - little vaginal bleeding (usually concealed) - maternal tachycardia/hypotension - uterine contraction cessation -foetal loss of station - uterine tenderness
139
Uterine rupture Dx
Laparotomy
140
Uterine rupture Ddx
- uterine atony - amniotic fluid embolism
141
Transverse lie/breech indicates
-Multiparity - pendulous abdomen - **placenta previa** - polyhydramnios -pelvic inlet contracture/ foetal macrosomia - uterine abnormalities (fibroids, bicornuate uterus) - foetal abnormalities (neck/sacrum tumours, hydrocephaly, abdominal distension) - distended maternal bladder - poorly formed lower segment - more premature (wrong date) - undiagnosed twins - preterm delivery
142
Transverse lie/breech investigation
US
143
Transverse lie/breech management
If placenta previa excluded - Cephalic version is < 36 - C section if >37 weeks or in labour
144
Fundal height
height correlates to gestational age (weeks) with > 2cm discrepancy < gestational age: - dating errors - foetal growth restriction (3rd trimester) - reduction in liquor volume (3rd trimester) - oligohydramnios - traverse/oblique lie - small gestational age - late ovulation (if px ceased OCP: 2 weeks 50%, 6 weeks 90%, 12 months 1%) > gestational age: -dating errors - large gestational age - polyhydramnios - molar pregnancy
145
Fundal height location
- 12 weeks: palpable above the pubis - 20 weeks: level of umbilicus
146
Fundal height not matching gestational age, next step?
US to check for dating error as wells as polyhydramnios, multiple gestation
147
Placenta Previa grading
I: placenta is lower segment, but lower edge doesn't reach internal os (2.5) II: lower edge reaches internal os but doesn't cover it III: placenta partially covers internal is IV: completely covers internal os
148
GDM antenatal screening
Routine OGTT at 24-28 weeks If risk index > 2 OGTT at 14 weeks
149
GDM criteria
a fasting plasma level: > 5.5mmol/L 1hr: 10.1mmol/L 2 hours after a 75g OGTT: 8.5mmol/L
150
Placenta Previa < 37 weeks managment
if routine exam at 18 weeks shows low lying placenta, then another US should be done at **32-34 weeks** - Vital signs, IV if needed - uterine tenderness - US - Anti-D (RhoGAM) (mum is Rh- but foetus Rh+)
151
Gestational diabetes (GDM) postpartum screening
- 30% in the next 10 years - 50% risk of type 2 DM within 20 years diagnosed should have - 75g OGTT 6 -12 weeks postpartum HbA1c every 3 months during pregnancy - FBS and/or HbA1C **3 yearly**
152
Gestational diabetes (GDM) antepartum screening
Consult risk index to assess px score: If < 2: 75g OGTT 24-28 weeks if >2: 75g OGTT at 14 weeks (earlier if px can tolerate it)
153
Gestational diabetes (GDM) screening risk index
BMI: 25-35 = 1 BMI: > 35 = 2 Ethnicity: not white = 1 Previous GDM = 2 Previous elevated blood glucose = 2 Maternal age > 40 years = 2 Family hx: 1st degree relative or sister = 2 Previous macrosomia = 2 Previous perinatal loss = 2 PCOS = 2 Medications (corticosteroids, antipsychotics) = 2
154
DM in px planning to conceive
aim to achieve a target HbA1c value less than 6-7%
155
GDM diet control delivery plan
if well controlled, continue to 40 weeks
156
GDM medicated control delivery plan
if good control: 38-39 weeks (try for 39 weeks onwards) If poorly controlled: induce at 38 weeks
157
Epstein-Barr (EBV) in pregnancy
- 2-7 weeks incubation - doesn't transmit to foetus - Infectious mononucleosis - 3-3.4% susceptible - 50% infected develop clinical disease - recurrent infection can cause shortened pregnancy and low birth weight - **only need to deal with px if symptoms arise**
158
EBV features
- fever - sore throat - **cervical/ post auricular lymphadenopathy** - characteristic increases in monocytes and lymphocytes - hepatosplenomegaly -hepatic transaminase increase
159
EBV management
Symptomatic treatment - Antibiotics in bacterial URTI
160
Drug associated patent ductus arteriosus
-NSAID's
161
NSAID's in pregnancy
- USED WITH CAUTION - not more than 48 hours -PDA -delayed labour and birth - oligohydramnios via decreased foetal GFR
162
treatment of hyperemesis graviudarum
codeine and metoclopramide
163
Round ligament pain
- 2nd trimester -RLQ pain - aggravated by moving - all vital signs normal
164
Features of threatened abortion
- closed cervical os - absent history of passing foetal tissue - uterine size is the expected size
165
Features of inevitable abortion
- open cervical os - bulging of membranes of the os < 20 weeks - uterine size is smaller than the expected size
166
Features of incomplete abortion
- open cervical os - bulging of membranes of the os >10 weeks - uterine size is smaller than the expected size
167
Features of complete abortion
- closed cervical os - passing of foetal tissue - uterine size is smaller than the expected size
168
Features of septic abortion
- uterine infection during any time - vaginal bleeding -cramping pain - fever - purulent cervical discharge
169
Features of missed abortion
- Closed cervical os - No spotting or bleeding (no foetal tissue passed) - Ultrasound scans diagnosis of a non-viable IUP (empty sac) - uterine size is smaller than the expected size
170
Spontaneous abortion risk factors
- age > 35 - previous miscarriages - antiphospholipid syndrome 15% - parenteral chromosomal derangements - embryonic chromosomal abnormalities - congenital uterine malformations -cervical weakness - DM, thyroid disease - Immune factors - Infections _ inherited thrombophilic defects - caffeine, smoking, alcohol -uterine adhesions
171
Most common method of abortion in Aus
4 to 9 weeks: mifepristone and misoprostol 6 to 14 weeks: D&C Legal for up to 24 weeks > 16weeks: get 2nd opinion and if ok then D&C
172
Most accurate estimation of gestational age
Transvaginal US at 8 weeks
173
Vaginal bleeding in 2nd trimester
- cervical insufficiency or labour - placenta previa -placental abruption - uterine rupture - vasa previa
174
Features of cervical insufficiency
Sx usually persisting for several days or weeks: - increased pelvic pressure (similar to labour discomfort) - premenstrual-like cramping - backache - increased vaginal discharge - seen between 14-20 weeks - soft effaced cervix, with minimal dilation - advanced clinical - uterine size is the expected size presentation - more than 4 cm dilated and more than 80% effaced
175
Risk factors of cervical insufficiency
-Congenital disorders of collagen synthesis (Ehlers-Danlos syndrome). -Prior cone biopsies. -Prior deep cervical lacerations, usually secondary to vaginal or C section. -Müllerian duct defects (e.g., bicornuate or septate uterus). -More than three prior foetal losses during the 2nd trimester
176
Vaginal bleeding in 1st trimester
- ectopic pregnancy - occurs in 20-30% of all pregnancies - significantly increases the risk of preterm birth by 28-31 weeks
177
Vaginal bleeding 3rd trimester
- Placental abruption - Placenta Previa
178
Vaginal bleeding postpartum
Bleeding 2 weeks postpartum is normal bleeding 2 weeks indicate placental site subinvolution - retention of small placental fragments (estimate blood loss and then perform a pelvic examination top check for uterine subinvolutionor tenderness)
179
Spider veins in pregnancy
- angiomas - common findings during pregnancy - hyperestrogenemia - resolve spontaneously after delivery
180
C section risk in Mother
- Increased risk of maternal mortality - thromboembolism - haemorrhage - infection - incidental surgical injuries - more postpartum pain - adhesions - hospital readmission -infertility/sub infertility - uterine rupture -abnormal plancetation
181
C section risk in foetus
- neonatal death - reparatory problems - asthma - iatrogenic prematurity - trauma (laceration) - breastfeeding failure
182
Risk of asthma in foetus
- C section - Smoking - avoidance of house dust mite or pet allergens - Probiotic dietary supplements, vitamin A, D or E supplements, or fish oil
183
Maternal Vitamin D deficiency
- Hypocalcaemia in newborn. – Rickets later in life. – Defective tooth enamel. – Small for gestational due to effect on skeletal growth – Foetal convulsions or seizures due to hypocalcaemia.
184
Pituitary apoplexy features
- sudden haemorrhage - excruciating headache - diplopia ( oculomotor nerve) - life threatening hypotension - Fall in ACTH, sortisol
185
Pituitary apoplexy inverstigation
- CT/MRI (**MRI for pregnancy**)
186
Anticoagulation in pregnancy
- both warfarin and heparin safe to use for breastfeeding mothers
187
Medications safe for breastfeeding
- Beta blockers: Propranolol, labetalol and metoprolol - Anticoagulation: Warfarin and Heparin
188
3rd trimester use of anticoagulants
- Both warfarin and heparin can be given to the mother. - Heparin doesn't cross the placenta - Heparin is preferred due to the quick reversal by protamine sulphate, compared to warfarin, especially if labour occurs
189
Antenatal thromboembolism management
**LMWH enoxaparin** is treatment of choice Below knee: 3 months Above knee: 6 months Postpartum: 6 weeks
190
Warfarin during pregnancy
CONTRAINDICATION - crosses placenta 1st trimester: **foetal warfarin syndrome:** 6-12 weeks' gestation - nasal hypoplasia - short fingers. Hypoplastic nails - calcified epiphyses (chondrodysplasia) - intellectual disability - low birth weight 2nd trimester (>12 weeks): - microcephaly - hydrocephalus - corpus callosum agenesis - Dandy walker malformation - mental retardation -optic atrophy, peter anomaly, microphthalmia - blindness
191
3rd trimester DVT patient on LMWH protocol
Switch to unfractionated heparin (UFH) at 36 weeks to avoid epidural haematoma
192
Pregnancy and DVT
Pregnancy is hypercoagulable state due to - drop in C and S proteins - increased procoagulant factor V and VII - antithrombin - more common in left leg (85%) due to left iliac vein compression
193
antiphospholipid antibody syndrome criteria
1 or > 1 foetal losses beyond 10 weeks of gestation
194
antiphospholipid antibody syndrome treatment
- low-dose aspirin (50 to 100 mg per day) - Low dose prophylactic LMWH
195
Pulmonary hypertension (PH)
- Contraindicated for pregnancy - maternal death 30-56% - most dangerous at peripartum period and immediate postpartum period (2 months) - C section preferred
196
Pulmonary embolism (PE) investigation in pregnancy
- CTPA 1st-2nd trimester (uses less radiation than VQ, therefore safer during pregnancy) - Ventilation perfusion 3rd trimester scan (to rule out PE)
197
hypothyroidism in pregnancy
- thyroid gland increases by 15% - increased T3 and T4 - Free T3 and T4 unchanged - increases demand of thyroxine by 25-30% -TSH should be monitored every 8 to 10 weeks during pregnancy
198
medications safe for hypothyroidism
levothyroxine
199
What is elevated during 3rd trimester
- prolactin - alkaline phosphatase - iron binding capacity - cortisol
200
Iron deficiency anaemia (IDA) in pregnancy
- 18% of pregnant women - screened at 1st trimester and at 28 weeks - 1000–1200 mg iron is required - serum ferritin test investigation of choice - microsomia
201
Iron deficiency anaemia (IDA) in pregnancy complications
- increases the risk of preterm delivery - increases the risk of microsomia or low birth weight
202
Iron deficiency anaemia (IDA) in pregnancy treatment
- **routine supplementation not recommended** - oral iron 20mg/day first line - IV iron at 2nd & 3rd trimester
203
Toxoplasma transmission
- unwashed fruits and vegetables - untreated water - raw meat - cat litter
204
Rh -ve woman and anti-D indications
1st trimester:  Chorionic Villus Sampling;  Miscarriage;  Abortion (medical after 10 weeks of gestation or surgical)  Ectopic pregnancy.  Molar pregnancy - blood transfusion Second and third trimester: (basic dose 625 IU)  Obstetric haemorrhage;  Amniocentesis or other invasive foetal intervention;  External cephalic version of a breech presentation, whether successful or not  Abdominal trauma, or any other suspected intra-uterine bleeding or sensitising event.  Abortion
205
Molar pegnancy
206
What type of twins will get blood to blood transfusion
monochorionic
207
Antepartum haemorrhage
* after 20 weeks - placenta previa - vase previa - placental abruption - cervical previa (cancer
208
Postpartum haemorrhage blood loss
vaginal 500ml - balloon, uterine ligation, hysterectomy C sec 1L
209
Postpartum haemorrhage causes
Primary/secondary tone trauma tissue thrombin Product of conception - Uterine atony **(most common)** 70% - Genital Tract trauma/laceration 20% - Retained products of conception/invasive placenta 10% - Coagulation abnormalities <1%
210
Postpartum haemorrhage management
- atony: fundal massage + oxytocin maintained placenta - exploration under anaesthesia to remove laceration - repair if unstable: DRABCD oxygen blood match | redue
211
Postpartum haemorrhage predisposing factors
- Antepartum haemorrhage (especially placental abruption and placenta praevia) - Postpartum haemorrhage with a previous pregnancy - Known placenta accreta - Multiple pregnancy - Coagulopathies
212
Most common cause of postpartum haemorrhage requiring hysterectomy?
Placenta accreta due to deep invasion to the uterine wall not the myometrium
213
Hysterectomy reasons
Placenta accreta Gas gangrene (clostridia 5-10%) haemolysis renal failure
214
Postpartum depression risk
20%
215
When to discontinue epileptic medication
- seizure free at least 2 years - no epileptic activity on EEG - no neurological finding
216
Lithium in pregnancy
- Cause of Ebstein anomaly - in cases of severe bipolar disorder, lithium may outweigh the risks - Lithium use during the first trimester of pregnancy has been reported to be associated with foetal cardiovascular anomalies (e.g. Ebstein’s anomaly) and midfacial and other defects. MOnitor every 4 weeks may change to quetiapin or olanzapine
217
Risk of developing Ebstein's anomaly on patients on lithium?
approximately 1 in 1000 to 2000 compared with 1 in 20000 in the general population.
218
If patient continues to use lithium during pregnancy, what should be investigated?
an ultrasound and echocardiogram should be performed at 16-20weeks gestation to exclude foetal anomalies, especially cardiac anomalies
219
In relation to lithium dosage during pregnancy, what should be done in each trimester?
1st trimester: keep same dose as before pregnancy but heavily monitor foetus by US at 16-20 weeks. 2nd trimester: continue same lithium dosage. 3rd trimester: decrease lithium dosage by 25% to avoid floppy baby syndrome due to neonatal toxicity. Stop lithium during labour After delivery **immediately** increase lithium dosage due to increased risk of relapse in postpartum period.
220
Sodium Valproate in pregnancy
1st trimester: decrease dose to prevent neural tube defects 2nd semester: continue decreased dosage through to 3rd semester 3rd trimester: increase the dosage to prevent seizures
221
Which SSRI is contraindicated in pregnancy
Paroxetine
222
HIV screening
- First antenatal visit
223
Risk of HIV transmission to foetus
20-30%
224
Perinatal HIV transmission interventions
- **assess mother's viral load:** - if viral load >1000 copies/mL/unknown then intrapartum zidovudine and elective C section - If mother hasn't taken antiretroviral therapy (including only intrapartum) add lamivudine plus nevirapine to zidovudine - if viral load <1000 copies/mL then no retroviral therapy needed, allow for vaginal delivery - peripartum intravenous zidovudine - Elective C section - Bottle feeding Intervention decreases risk to <2%
225
Herpes (HSV) during pregnancy
- Usually asymptomatic 75% - acyclovir before delivery recommended - Foetal infection risk significantly higher in primary infection - Presence of lesions on the genital (vulva, cervix) require immediate C section - <30 weeks, risk of shedding during normal birth is 7% with an overall risk of <3% for neonatal HSV
226
Which heart disease can lead to significant complication during pregnancy
Mitral stenosis secondary to pulmonary hypertension
227
Postpartum fever
38.7 for the first 24 hours, > 38 after 10 days post. Depends fever onset and uterine tenderness: - endometritis= uterine tenderness with/o lochia - UTI: 1-2 postpartum and urinary symptoms (dysuria) - Wound infection: 4-5 days - Septic thrombophlebitis: 5-6 days - breast engorgement: 7-21 days -atelectasis: 1st 24 hours
228
Postpartum fever management
Amoxicillin + metronidazole + gentamycin IF CI: vancomycin
229
Most common pathogen of septic shock
Escherichia coli
230
Smoking complications during pregnancy
Obstetric - abortion/miscarriage - placental abruption - placenta previa -preterm birth < 37 weeks pre-eclampsia -PROM -ectopic pregnancy - Still birth foetal - low birth weight - - Intrauterine growth restriction - birth defects Childhood/adult - SIDS - developmental delay - Type 2 DM - Obesity - hypertension - decreased HDL
231
Foetal alcohol syndrome (FAS)
- Small teeth/faulty enamel
232
Hypertensive medication in pregnancy
Most are contraindicated - ACE inhibitors -ARB's -Diuretics (1st sem teratogenic, 2-3 sem foetal renal dysfunctions, oligohydramnios, skull hypoplasia) - Beta blockers (foetal bradycardia, growth restriction) recommendation: Methyldopa, if contraindicated due to other reasons then hydralazine or labetalol
233
acute antihypertensive therapy in pregnancy
- Intravenous labetalol unless in patients with bradycardia (ie, <60/min) - Intravenous hydralazine if bradycardia is present - Oral nifedipine unless px nausea/vomiting
234
Tocolysis contraindications
- Gestation > 34 weeks or <24 weeks - Labor is too advanced - advanced cervical dilation (>4cm) - Chorioamnionitis - In utero foetal death - Abnormal CTG suggesting non-reassuring foetal Status - Lethal foetal anomalies - Intrauterine foetal demise - Suspected foetal compromise - Significant antepartum haemorrhage, such as placental abruption/ active vaginal bleeding - Suspected intrauterine infections (e.g. chorioamnionitis) - Maternal hypotension - Haemorrhage with hemodynamic instability - Pregnancy-induced hypertension/ eclampsia/ - pre-eclampsia - Placenta previa - Placental insufficiency - Intrauterine growth retardation – Congestive cardiac failure. – Diabetes mellitus - Severe pre-eclampsia - Maternal allergy to specific tocolytic agents, or where tocolytics are contraindicated due to specific co-morbidities (e.g. beta agonists should not be given in case of cardiac disease)
235
Tocolysis medication
1st choice: nifedipine 2nd: salbutamol and terbutaline 3rd: Ato Sibam (oxytocin antagonist)
236
Salbutamol contraindication
– Hyperthyroidism. – Foetal cardiac disease. – Maternal cardiac disease. – **Insulin-dependent diabetes mellitus**
237
Salbutamol side effects
– Hyperglycaemia. – Hypokalaemia. – The maternal tachycardia. – Pulmonary oedema. – Hypotension. – Tremors
238
Tocolysis in px with mitral stenosis
Ato Sibam (oxytocin antagonist) ---> CHECHK this info - Magnesium sulphate (stabilises cardiac membrane & also decreases uterine contractions)
239
trauma px monitoring
- Minimum 24 hrs look for: -Regular uterine contractions -Vaginal bleeding - non-reassuring foetal heart rate tracing - Abdominal/uterine pain - Significant trauma to the abdomen
240
Cervical cerclage indication
History: 12-14 weeks - Two or more second trimester pregnancy losses - Each loss earlier than the previous pregnancy Ultrasound: 14-26 weeks - progressive cervical shortening on serial ultrasounds - external os is closed Rescue: - Cervix dilated > 2 cm no perceived uterine contractions - > 50 % Premature cervical effacement - Increased pelvic pressure -Heavy mucoid vaginal discharge / bulging membranes through the cervical os
241
Breech presentation factors
Maternal: Nulliparity Previous breech birth Uterine (anatomical) anomaly Placental abnormalities (previa, cornual) Oligohydramnios Polyhydramnios Multiple pregnancy Grand multiparity Foetal: - Extended foetal legs - Short umbilical cord - Early gestation - Foetal abnormality - Poor foetal growth
242
Breech presentation contraindications
- Cord presentation - Any presentation other than frank or complete -breech with a flexed or neutral head attitude - Clinically inadequate maternal pelvis - Foetal anomaly incompatible with vaginal delivery - The foetal weight less than 2500g or over 3800g
243
Types of breech presentation
- **Frank breech**: The foetal hips are flexed, and the knees extended. - **Complete breech**: The foetus seems to be sitting with hips and knees flexed. - **Footling breech**: One or both legs are completely extended and present before the buttocks. - **Kneeling breech**: The baby is in a kneeling position, with one or both legs extended at the hips and flexed at the knees.
244
Breech presentation management
- external cephalic version if not at term < 36 weeks - if in labour and/or >37 weeks: elective C-sec Don't allow for vaginal delivery
245
Pregnancy supplementation
-folic acid (0.5-5mg depending on situation) - 150mcg iodine throughout pregnancy
246
Breastfeeding contraindication
Breast abscess HIV
247
Stroke in pregnancy
Usually SAH CT (cover the uterus)
248
Ectopic pregnancy (EP) features
-most common exam finding: Marked rebound tenderness in the suprapubic region with only little or absent guarding - cervical motion tenderness - PID major predisposing factor
249
Glucosuria in pregnancy
- Common - increased GFR - decreased tubular reabsorption of filtered glucose - Common in 1/6 women
250
Features of parvovirus
also known as fifth disease or slapped cheek syndrome - fetal parvovirus syndrome.
251
Hydrops fetalis features
abnormal accumulation of fluid in 2 or more foetal compartments including: - ascites -pleural effusion - pericardial effusion - skin oedema
252
Hydrops fetalis causes
-Haemolytic disease of the newborn -Severe anaemia. -Chromosomal abnormalities. -Congenital heart disease. Effects of tobacco smoking during pregnancy include: -Premature birth, -**Placental abruption (double the risk for smokers who consume more than 20 cigarettes a day)** -Spontaneous abortion. -Low birth weight. -Stillbirth. -Placenta praevia
253
parvovirus screening
IgM- IgG- - mother not immune, infection possible = repeat serology in 2 weeks IgM+ IgG-: infection established = foetal monitoring 1- 2 weeks for next 6-12 weeks IgM+ IgG+: infection established = foetal monitoring 1- 2 weeks for next 6-12 weeks IgM- IgG+: mother immune = reassurance
254
GBS sepsis risk factors
- Maternal fever more than or equal to 38°C either intrapartum or within 24 hours of giving birth - Group-B streptococcus bacteriuria and colonization in current pregnancy - Rupture of membranes prior to birth for more than 18 hours -Preterm labour (less than 37 weeks) - Previous GBS related early onset sepsis
255
asymptomatic bacteriuria treatment
- first-line: cephalexin 500mg orally, 12 hourly for 10 days (category A) - Second-line: nitrofurantoin 50mg orally, 6 hourly for 10 days (category A) Trimethoprim 300 mg oral daily for 5 days **(avoid 1st trimester due to folic acid deficeiency) - Third-line: amoxicillin + clavulanate 500+125mg orally, 12-hourly for 10 days (category B1) - Augmentin if px allergic to penicillin
256
asymptomatic bacteriuria complication
- acute pyelonephritis 50% - acute cystitis 30%
257
asymptomatic bacteriuria pathogen
Escherichia coli 80% Staphylococcus Saprophyticus 5-10%
258
asymptomatic bacteriuria treatment indication
Pregnant women Elderly
259
Types of episiotomy
1st degree: tear involves the vaginal mucosa or perineal skin only 2nd degree: underlying subcutaneous tissue is also involved 3rd degree: rectal sphincter is affected 4th degree: extends into the rectal mucosa
260
GBS treatment
IF vaginal discharge but no urinary symptoms: no treatment necessary Vaginal discharge WITH urinary symptoms: IV penicillin (clinda if CI) 5-7 days - Consult with Obstetrician - Commence parental treatment in labour and IM (penicillin) injection to the baby after delivery is sign of infection
261
Asymptomatic bacteriuria vs GBS
Asymptomatic bacteriuria doesn't present with vaginal discharge as well as no urinary symptoms. Treatment cephalexin GBS comes with vaginal discharge with/o urinary symptoms
262
GBS screening
35-37 weeks
263
Hepatitis B (HBV)
- HBsAg-positive with high viral load should be offered antiviral therapy during late pregnancy to reduce viral load before delivery - amniocentesis is probably safer than CVS - Universal screening for Hepatitis B is recommended for all pregnant women, regardless of previous testing or vaccination
264
Hepatitis C (HCV) in pregnancy
- **PCR test for HCV RNA ** - liver function tests (LFT) for concomitant HIV - transmission rate to foetus is 5% - co-infection with HIV, transmission rate increases to 25%. (**avoid foetal blood sampling/foetal scalp electrode**) - Infant HCV screening at 12-18months - Ribavirin teratogenic
265
HCV contraindications
- C section - amniocentesis - FBS - amniotomy
266
Down syndrome screening
Combined test has blood test and U/S ∗ Blood test- done between 9-11 weeks ∗ Estimates 2 maternal blood factors ∗ Beta HCG- increased ∗ PAPP-A- decreased ∗ U/S called nuchal translucency scan(NT NB scan) done between 11- 14 weeks ∗ Also detects trisomy 18 ∗ Second best non invasive test for assessing risk for Down’s ∗ Detection rate- 87%
267
Down syndrome screening- second
∗ Blood tests done between 15-17 weeks ∗ NIPT ∗ Quadruple test ∗ 4 maternal blood factors are assessed ∗ Beta HCG- increased ∗ Inhibin A- increased ∗ Alpha feto protein- decreased ∗ Oestriol- decreased ∗ Triple test ∗ Detects above factors except inhibin A ∗ Detection rate for triple test is 67- 71% ∗ Detection rate for quadruple is 81%
268
Down syndrome screening
Chorionic villous sampling ( CVS) Done between- 10-12 weeks ∗ Risk of miscarriage- 1 in 100 Second trimester up to 20 weeks Amniocentesis ∗ Done between 15- 20 weeks ∗ Risk of miscarriage is 1 in 200 ∗ Safest and most accurate diagnostic tool ∗ Amniotic fluid can also be analysed for elevated levels of alpha fetoprotein and acetyl choline esterase for neural tube defect screening ∗ Percutaneous umbilical blood sampling or cordocentesis gives most accurate diagnosis but not commonly used as it carries risks
269
Most accurate test for Down syndrome
Amniocentesis at 16 weeks
270
Worst drug for pregnancy
Cocaine: most severe neurological defects Increased ICH
271
most important single warning sign of diminishing blood volume within the first four hours postpartum?
Tachycardia
272
risk of unplanned pregnancy
– Rural or remote residents. – Sexual abuse survivors. – Early age at first sexual intercourse. – Aboriginal and Torren Street islander. – Disrupted home and family life. – Teenage mothers. – Inconsistent use of contraceptives
273
Planned home birth hospital transfer
delayed first/2nd delivery
274
Causes of Oligohydramnios
- Prolonged pregnancy - Pre-eclampsia - Congenital infections (CMV, toxoplasmosis) - Placental insufficiency - Nsaid, ACE
275
Complications of oligohydramnios
∗ IUGR ∗ Limb contractures ∗ Preterm delivery ∗ Cord compression during labour
276
Olighydramnion - Clinic
**Clinical presentatio**n ∗ Sense of decreased fetal movement **Examination** ∗ Uterus smaller than dates **Investigations** ∗ U/S every 1- 3 weeks ∗ Doppler U/S if utero placental insufficiency is suspected ∗ CTG ∗ TORCH screen
277
Causes of Polyhydramnios
**Definition** ∗ If amniotic fluid > 2000 ml or AFI >/= to 24 cm **Causes** ∗ Multiple pregnancy ∗ Gestational DM ∗ Fetal malformations ( GI obstruction, brain and spinal cord defects) ∗ Fetal infections- CMV, toxoplasmosis, rubella, syphilis ∗ Chromosomal abnormalities- Down’s ∗ Placental tumours
278
Polyhydramnion -Clinic
Clinical presentation ∗ Abdominal distention more than usual ∗ Dyspnoea ∗ Swelling of legs ∗ Varicosities Examination ∗ Fundus larger than dates ∗ Fluid thrill may be positive
279
# - Polyhydramnion - Management
* **Mild ** no treatment * If SOB or abdominal pain Medications- Indomethacin to decrease urine production in baby. Not given after 31 weeks of pregnancy. Due to risk of heart problems in fetus, ECHO and Doppler U/S needs to be done. Complication is premature closure of PDA * If AFI >40, indomethacin C/I, severe symptoms ∗ Amnioreduction / therapeutic amniocentesis. Can cause preterm labour, PROM and abruptio.
280
chlamydial urethritis treatment
Azithromycin 1 g oral
281
Obesity in pregnancy
1- Gestational diabetes (GDM) 2- Pre-eclampsia 3- Sleep apnoea 4- Macrosomia (increased baby weight > 4kg)
282
Thyrotoxicosis in pregnancy
- US to differentiate between “hot” and “cold” nodule - FNAC after for all cold nodules to establish a histopathological diagnosis NOTE: Radioisotope or radionuclide Technetium uptake scan **absolute contraindication** -
283
Meconium stainied liquor
greenish fluid
284
Meconium-stained liquor indicates
Foetal respiratory distress
285
# Continuous CTG ∗ Pelvic examination to assess progress and r/o cord pro Meconium-stained liquor management
- CTG remains normal then spontaneous vaginal delivery - minor abnormality **(early deceleration)** on CTG then foetal scalp blood sampling to see blood pH and or lactate level
286
Shoulder dystocia features
- occurs when breadth of the shoulders diameter exceeds the diameter of the pelvic inlet - brachial plexus palsies including Erb’s palsy (waiter step) (C5-C6 compression) - McRoberts manoeuvre ( hyperflexing the mother’s legs tightly to her abdomen) is employed - If manoeuvre fails, apply pressure on the lower abdomen (suprapubic pressure), and delivered head is also gently pulled. Useful in about 42% of cases.
287
Shoulder dystocia MANAGEMENT mnemonic
288
Shoulder dystocia risk factors
- Maternal DM - foetal macrosomia - Oxytocin augmentation - epidural anaesthesia
289
Shoulder dystocia
* anterior more common Complications ∗ Maternal 3rd or 4th degree perineal tears PPH ∗ Fetal Brachial plexus injury like Erb’s palsy Fracture humerus Pneumothorax Hypoxic brain damage
290
Ascaris lumbricoid (Roundworm) treatment in pregnancy
- confirmed by eggs in faeces - may develop respiratory tract symptoms - gastrointestinal symptoms - **Pyrantel pamoate 11mg/kg single dose** **benzimidazoles absolutely contraindicated**
291
Contraindications for baby discharge
- excessive weight loss >10% -excessive weight loss - suspected domestic violence - court order
292
Which presentation always requires C section
Face presentation
293
Most common cause of C section in Aus
previous C sec
294
Gestational trophoblastic disease complications
– Uterine infection. – Haemorrhagic shock. – Sepsis. – Pre-eclampsia. – Metastasis to the lungs/breast
295
Gestational trophoblastic disease features
- Hydatidiform mole may be complete with no fetal tissue or incomplete with some fetal tissue - vaginal bleeding in early pregnancy (“grape like debris”) - Uterus is large for date - hyperemesis gravidarum - hyperthyroidism - high Beta-hCG - ultrasound shows “typical snow-storm appearance”
296
Types of Gestational trophoblastic disease (GTD)
- Hydatidiform Moles (HM) - Complete HM. - Partial HM. - Gestational Trophoblastic Neoplasia (GTN) - Invasive moles. - Choriocarcinomas. - Placental-site trophoblastic tumors (PSTT; very rare)
297
Gestational trophoblastic disease treatment
- suction & curettage - Consider hysterectomy if patient has completed family
298
Contraindications to vaginal delivery
-Cord presentation. -Foetal growth retardation or macrosomia. -Any presentation is other than frank or complete breech. -Clinically inadequate pelvis. -Extension of the foetal head. -The foetal anomaly is incompatible with vaginal delivery
299
Contraindication to influenza
- Previous influenza allergy - Egg allergy
300
Post maturity labour
> 42 weeks - induce labour
301
Syphilis in pregnancy
- Treponema pallidum - spontaneous miscarriage or stillbirth - 2 serological tests: treponemal tests non-treponemal tests -routine testing at first antenatal contact - Prenatal screening tests offered as a choice
302
HPV during pregnancy
- screening done after delivery if urgent can done immediately? - vaccination done after delivery
303
Rheumatoid arthritis in pregnacy
- can improve in 75% of the cases and can get worse in 25% - methotrexate and leflunomide contraindicated (folic congenital disabilities) - methotrexate can be switched to **sulfasalazine**
304
Methadone in pregnancy
- Safe at even high doses, can be given during breastfeeding
305
Epilepsy in pregnancy
- 30% increase in seizures/relapse (level of anti-epileptic drugs falls in pregnancy)
306
Epileptic that has the highest rate of congenital malformations
Sodium Valproate/Valproic acid
307
Induction of labour gestation in dication
- Wait for spontaneous vagina delivery at 41st week - After 41 weeks, induce labour
308
Dizziness, light-headedness, and syncope at very late stage of gestation
significant arterial hypotension resulting from inferior vena cava compression (supine hypotensive syndrome or inferior vena cava syndrome)
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Dead foetus in peripartum management
- If mother asymptomatic: oxytocin and amniotomy - if symptomatic: C section
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Normal weight gain during pregnancy
<18.5 kg/m : 12.7-18 kg 18.5-24.9 kg/m : 11.4-15.9 kg 25-29.9 kg/m : 6.8-11.4 kg ≥30 kg/m : 5-9 kg
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Postcoital bleeding during pregnancy
- cardinal symptom of cervical cancer red and inflamed appearance of the cervix (cervical ectropion) - **HPV and liquid based cytology test**
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Dizygotic twins
- dichorionic and diamniotic placenta regardless of the sex of the foetuses - placentas of dizygotic twins may be totally separated or intimately fused
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Monozygotic twins
- are always of the same sex but may be monochorionic or dichorionic depending upon when the separation of the twins occurred - 20% to 30% have dichorionic placentation
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Sheehan syndrome pathogenesis in pregnancy
- Obstetric haemorrhage complicated by hypotension - Postpartum pituitary infarction
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Sheehan syndrome features in pregnancy
Lactation failure (low prolactin) Amenorrhea, hot flashes, vaginal atrophy (low FSH, LH) Fatigue, bradycardia (low TSH) Anorexia, weight loss, hypotension (low ACTH) Decreased lean body mass (low growth hormone)
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epidural anaesthesia side effects
- hypotension (Vasodilation and venous pooling) - bradycardia - respiratory difficulty - Leakage of CSF (no hypotension)
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HPV treatment in prenancy
asymptomatic: no treatment needed symptomatic: large lesions with cryotherapy or keratolytics such as trichloracetic acid (TCA) or bichloracetic acid (BCA)
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bilateral absence of the vas deferens
- cystic fibrosis - sweat chloride test for confirmation - for conception/fertility, sperm can be aspirated from the epididymis
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Which of the following age group of the children is at the highest risk of a serious infection?
Less than three months old: - sepsis, - meningitis - pneumonia
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Most likely cause of occipito-posterior (OP) position in labour
**Incoordinate uterine action** other causes: - prolonged labour - intrauterine infection - increased analgesia required - obstructed labour
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Most common adverse effect of oxytocin
foetal distress
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Most common cause of foetal distress
**Incoordinate uterine action** resulting in occipito-posterior (OP) position in labour
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occipito-posterior (OP) position in labour features
11cm (vs normal 9.5 cm) - CTG monitoring recommended even more common if oxytocin & epidural were used (CTG mandatory) associated with poor quality uterine contraction - if this is excluded, cephalopelvic disproportion **incoordinate uterine action almost always occurs** (AMC Handbook)
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occipito-posterior (OP) position in labour management
Stimulate labour: - amniotomy - oxytocin Epidural (often necessary) C-sec (in case of obstructed labour/foetal distress)
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Causes of dyspareunia
atrophic vaginal epithelium - low oestrogen level due to high prolactin level
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Premature delivery risks
**Positive foetal fibronectin test** Previous premature delivery Increased uterine size - foetal macrosomia - polyhydramnios - multiple pregnancies shortened cervix - <1.5cm in length Opened cervix - open internal os bacterial vaginosis only if - in case of increased cervical length - open cervix
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Multiple pregancies complications
- IUGR - monochorionic twins twin to twin transfusion
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Twin to twin transfusion ( TTTS)
* mono chorionic twins ∗ Acute TTTS is a transfusion that happens quickly, without much warning and can happen during pregnancy or at the time of labour in a vaginal birth * due to discordant amniotic fluid. * Mom presents with a feeling of rapid growth of uterus, abdominal pain or tightness ∗ Chronic TTTS is more common that happens over time with signs on ultrasound scan usually by 15 to 20 weeks ∗ Confirmation : Doppler Ultrasound ∗**Treatment ** 1. early delivery if twins are of sufficient maturity 2. amnio reduction from the fuller sac 3. Laser treatment to seal off vessels in the placenta rendering the blood flow to both twins more equal
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Rf for Placenta praevia
high parity multiple pregnancy advanced maternal age chronic HT Smoking/Cocain abuse Previouse C Section
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Multiple pregnancy - Vaginal Birth
∗ Diamniotic ∗ Twin 1 is cephalic ∗ Twin 2 not > 500gm than 1st ∗ No maternal or fetal complications ∗ Elective induction from 37 weeks ∗ If twin 2 is breech, attempt Internal cephalic version and breech extraction
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Multiple birth - C- Section
∗ Mono amniotic twins ∗ If twin 1 is breech ∗ Twin 2 bigger than twin 1 ∗ Maternal or fetal complications ∗ Other abnormal presentations and lies.
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MC Roberts Manoever
* flexion and abduction of maternal hips, positioning maternal thighs on her abdomen. This straightens lumbosacral angle and increases A-P diameter of pelvis. ∗ Suprapubic pressure applied to fetal anterior shoulder ∗ Traction in axial direction applied to fetal head ∗ **Internal rotational manoeuvres if above fails**
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Contraindication for Tocolysis
∗ Acute fetal distress ∗ Fetal death ∗ Fetal maturity ∗ Chorioamnionitis ∗ Severe P E T/ Eclampsia ∗ Maternal haemodynamic instability as in APH antepartum Haemorrage ∗ Cervix dilated >5cm and 75% effaced ∗ C/I to specific tocolytic
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Cervical Incompetence
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Cord prolapse - clinical presentation
∗ If fetal heart becomes abnormal after ROM, suspect cord prolapse ∗ CTG : bradycardia severe variable decelerations ∗ Diagnosis is made by visual inspection or by palpation during vaginal examination
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Cord Prolapse - MX
* Place patient in either knee to chest position or alternatively in exaggerated Sims position * Manual elevation of presenting part which is pushed out off pelvis upward, by fingers in the vagina
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IUGR - US
U/S biometry fortnightly- gold standard ∗ Bi parietal diameter, head circumference, abdominal circumference and femur length ∗ Abdominal circumference below 2.5 percentile is the most sensitive indicator of IUGR Ratio of HC/AC ∗ will drop almost linearly from 1.2 to 1.0 between 20 and 36 weeks normally ∗ In symmetrical( chromosomal anomely) IUGR, this is normal ∗ In asymmetrical (Undernourished), this is elevated Estimation of amniotic fluid volume ∗ Decreased volume is closely associated with IUGR
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Decreased fetal movement
**DFM ATER 28 WEEKS** ∗ FHR checked with hand held Doppler ∗ If FHR detected, a CTG for at least 20 minutes should be performed to exclude fetal compromise to detect FH beat and FHR pattern ∗ If presence of FH beat is not confirmed, absent or still in doubt, then immediate ultrasound scan should be done to diagnose or exclude IUD ∗ If FHR absent ∗ Testing for feto maternal haemorrhage should be considered as part of preliminary investigation by flow cytometry or Kleihauer test DFM Ultrasound assessment should be done within 24 hours
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NIPT ( Non Invasive prenatal test)
∗ Maternal blood test from 10 weeks ∗ Test for DNA of baby Checks for ∗ Other trisomies 13 (Patau syndrome) / 18 (Edward’s) ∗ Sex chromosome aneuploidies like Turner’s ( 45 XO), Klinefelter’s (47XXY) Triple X syndrome (47XXX) Jacob’s syndrome( 47XYY) and 22q11.2 microdeletion causing heart defects and intellectual disability ∗ Can identify sex of baby ∗ 99% detection rate ∗ Expensive not covered under Medicare
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Mastitis - MX
∗ Continue breast feeding from affected breast ∗ Place hot washers over breast before starting to feed and cold packs after feeding ∗ Antibiotics- Dicloxacillin/ flucloxacillin/ cephalexin for 5 days ∗ Analgesics ∗ Check breast feeding technique ∗ Review in 24- 48 hours ∗ Basic blood tests and U/S if doubtful of breast abscess or in 48 hours if mastitis is not responding to antibiotics ∗ If Candidial mastitis-Fluconazole orally
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Breast Abscess MX
* Basic bloods, U/S ∗ If small, aspiration or incision and drainage under anaesthesia ∗ If large, surgical drainage and drain under anaesthesia ∗ Antibiotics/ analgesics ∗ Hydration ∗ Might need temporary weaning from affected breast ∗ Breast needs to be kept well drained using breast pump
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Breast Abscess
∗ If mastitis is not treated, it becomes breast abscess ∗ Tenderness and redness persisting beyond 48 hours ∗ Patient presents with fever, chills, tiredness, muscle aches and pains and also painful lump ∗ Lump is tense, cystic, fluctuant, tender, indurated with warmth and erythema
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Contraception
Contraception ∗ No COC if breast feeding Options if breast feeding ∗ Mini pills ∗ Depo MPA ∗ Implanon ∗ IUCD ∗ Barrier methods
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First stage of labour
∗ cervix starts to soften and open and becomes complete when cervix has opened around 10 cm ∗ Has latent, active and transition phase
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# [](http://) Latent stage of labor - Delay
∗ If <4 cm dilatation of cervix up to 12 hours Management ∗ CTG monitoring of baby ∗ If cervical dilatation less than 4 cm, consider ARM or oxytocin infusion
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ACTIVE FIRST PHASE OF LABOUR
Characters ∗ Contractions become more intense and regular comes every 3 to 5 minutes and lasts for 45- 60 secs. ∗ Cervical dilatation from 4 to 7 cm ∗ Lasts for 3 to 5 hours Delay in active first stage ∗ If cervical dilatation is <2 cm in 4 hours
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ACTIVE FIRST PHASE OF LABOUR Primigravida
In primigravida ∗ ARM ∗ Repeat vaginal examination after 2 hours of ARM ∗ If no progress, give oxytocin infusion, if no mal presentations, foetal compromise or obstructed labour ∗ Do vaginal examination after 4 hours of oxytocin ∗ If <2 cm progression after 4 hours , deliver by C-section ∗ If >2cm dilatation, repeat vaginal examination 4 th hourly
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ACTIVE FIRST PHASE OF LABOUR Multigravida
In multigravida ∗ ARM ∗ Repeat VE after 2 hours of ARM ∗ If no progress give oxytocin infusion, if parity is less than 5, unscarred uterus, contractions less than 3-4 in 10 minutes and lasting less than 60 seconds ∗ Repeat VE after 2 hours of oxytocin infusion ∗ If <2cm dilatation after 2 hours, C-section
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Transition Phase of first Stage
Characters ∗ Contractions every 30 secs to 2 minutes lasting for 60- 90 secs ∗ Cervix dilated from 8 to 10 cm ∗ Lasts for 30 seconds to 2 hours ∗ Total duration of first stage is from 8 to 12 hours ∗ ROM happens anytime during first stage
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Second Stage- Passive second stage
Characters ∗ During this time, presenting part descends towards pelvic outlet and rotation and flexion occurs ∗ Full dilatation of cervix ∗ Regular contractions but no urge to push ∗ If no urge to push after 1 hour Management ∗ Oxytocin augmentation after ruling out CPD, obstructed labour, full bladder, malpresentations
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Second Stage- Passive second stage
Characters ∗ Urge to push or expulsive contractions ∗ Full dilatation of cervix ∗ Presenting part of baby becomes visible ∗ Normal duration is 5 to 30 minutes Delay In primi ∗ if > or = to 2 hours without epidural and > 3 hours with epidural In multi ∗ if > or = to 1 hour without epidural and 2 hours after epidural Management ∗ Continuous CTG monitoring of baby ∗ If no urge to push and uterine contractions inadequate give oxytocin
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Third stage of labour
∗ From birth of baby to expulsion of placenta and membranes ∗ Give oxytocin 10 IU I/M immediately after birth of anterior shoulder of baby. In breech give after delivery of baby ∗ If at high risk of PPH ( big baby, episiotomy, history of PPH) give oxytocin 5 IU + ergometrine 0.25 mg. This is contraindicated if there is PET, HT, cardiac/ hepatic/ renal disorders If not complete by 30 minutes or if there is signs of PPH ∗ Management depends on cause
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Varizella Treatment IgG- IgM-
**Determine time of exposure** **within 96 hours** varicella zoster immunoglobulin tomother ∗ Highly effective if given within 96 hours ∗ Limited effect as late as 10 days post exposure **more than 96 hours** ∗ Oral acyclovir or valaciclovir should be considered for women in ∗ second half of pregnancy ∗ h/o underlying lung disease ∗ Immune comprised ∗ Smokers
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Hyperemesis - Association
∗ Normal pregnancy- 10% ∗ Molar pregnancy ∗ Multiple pregnancy ∗ Urinary infection Exclude other pathological causes like ∗ Sepsis ∗ Cholecystitis, peptic ulcers, appendicitis, gastroenteritis, hepatitis ∗ Eating disorders
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Hyperemesis - commendest symptom
severe, constant nausea and vomiting
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Chlamydia Urethritis
Azithromycin 1g single dose
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Hyperemsis - Investigation
****∗ Transvaginal U/S Exclude molar pregnancy, multiple pregnancy ∗ Urine dipstick for UTI/ ketones ∗ Urine MCS ∗ Blood FBE U,C& E- first line investigation LFT **Initial investigations- serum electrolytes, urinary ketones**