Obstetrics Flashcards
Why would pregnant woman has pain & bleeding but then it resolves?
• Implantation at time menses
• Cervical trauma during intercourse
• Subchorionic hemorrhage
Can trans Abdominal U/S detect ectopic pregnancy?
No, only trans vaginal
How you manage Ectopic Pregnancy?
If the patient is stable ~> MTX (HCG < 5000)
If not (ruptured tube) ~> Surgery (Salpingectomy & Salpingotomy)
What associated with Duodenal atresia?
Duodenal atresia is commonly associated with trisomy 21 (Down syndrome)
and
VACTERL (Vertebral, Anal atresia, Cardiac, Tracheoesophageal fistula, Esophageal atresia, Renal, Limb) association
What cause the followings:
1- Diaphragmatic hernia, rocket bottom feet and clenched hands
2- Holoprosencephaly
3- Horseshoe kidney
4- Myelomeningocele (spina bifida)
5- Periventricular calcifications
6- VSD
1- Trisomy 18 (Edward syndrome)
2- Trisomy 13 (patau syndrome)
3- 45x (Turner syndrome)
4- Folate deficiency
5- Congenital CMV infection
6- Trisomy 21 (Down Syndrome)
Bulk symptoms (rectal pain or pressure) + cervical protruding mass + heavy vaginal bleeding =
Cervical leiomyoma
Vaginal bleeding + High HCG + Enlarged uterus =
Choriocarcinoma
Amenorrhea + Blind vaginal pouch =
Complete mullerian agenesis
Abdominal pain + Foul smelling vaginal discharge + Vaginal bleeding + something seen in vagina on exam =
Foreign body
Postmenopausal woman + Pelvic pressure + Vaginal bulge increased with valsava =
Pelvic organ prolapse
Infancy + Polypoid or grapelike mass protruding through vagina + Vaginal bleeding + Vaginal discharge =
Sarcoma botryoides
How B-HCG change during pregnancy
Double every 48 hours
Peak (100k) at 8-10 weeks
Decline until 12k in 20 weeks
How you determine fetal age by U/S
- CRL
- BPD
- FL
- HC
- Abdominal circumference
How you determine fetal age
- LMP
- 1st U/S
- URINE OR BLOOD TEST
- FETAL MOVEMENT
- SFH
- LAST U/S
- PATIENT OPINION
When SFH mismatches with fetal age
Incorrect dating or:
- Larger than expected ~> Poly - Molar - Multiple - Full bladder - Fibroid - Macrosomia
- Less than expected ~> Oligo - IUGR - IUD
What are signs expected to see in pregnancy
شلج بالحمل:
- Chadwik ~> Blue discolouration of cervix & vagina
- Ladin ~> Softening of uterus
- Goodel ~> Softening of cervix
Linea nigra - Palmar erythema - Talangectesia - Stria Gravidarum
What worsen and what improves with pregnancy regarding cardiac pathology
Regurgitation ✅
Stenosis ❌
What are physiological changes in pregnancy
- Respiratory alkalosis
- Dilutional anaemia
- Hypercoagubility
- High cardiac output & High plasma volume (peak at 32wks) & Low hematocrit
- Supine HOTN
- Edema (high renin) & Frequency
- Goiter (B-HCG work as TSH & High TBG)
- Weight gain
منو الي متكدر تتمرن وهي حامل عندها خطر يعني
- Cervical incompetence
- Multiple gestation
- Leaking liquor
- PET
- PL PRV
How NSaids affect pregnancy
- After 20wks ~> Oligohydramnios
- In 3rd trimester ~> Close ductus arteriosus
What are 1st trimester screenings
- BMI
- Blood Pressure & Serum glucose level
- CBC (exclude anaemia + establish baseline)
- Blood group & RH
- GUE & Culture
- Infections
1- How you detect allo-antibodies between mother and fetus
2- why you wanna know blood group of pregnant woman
3- when we give anti-D rather than RH incompatibility
1- Indirect coomps test
2- Blood transfusion
3- SAB & Amniocentesis & Trauma
How you determine RH group of the fetus
- Cell free DNA testing (in mother’s blood)
- Amniocentesis
If MCA doppler of baby reveals High flow, it means:
Fetal Anaemia
If mother isn’t immuned for rubella & varcilla, should they have vaccines in pregnancy?
Never, Mx is:
- Avoid exposure
- Postpartum immunisation
Mx of Hepatitis B in pregnancy
- Vaccine in pregnancy is OK
- HBUG & HBV after birth
Mx of Hepatitis B in pregnancy
- Vaccine in pregnancy is ok
- HBIG & HBV after birth
Gestational DM screenings?
-Screening (Performed 24 to 28 weeks):
50 gram, one-hour glucose challenge test(GCT)
- Diagnostic test:
• 100-gram, three-hour oral glucose tolerance test (GTT)
• Fasting for 6 hours
• Baseline, one-hour(180) , two-hour (155) , and three-hour (140) glucose testing
What vaccines pregnant woman should take
- Tetanus
- Influenza
What Maternal Serum Markers Abnormal levels associated with aneuploidy
بابا ينحب على الفا وبيتا وسيستر الي انفصل عنها
- PPAAP,A
- Inhibin A
- AFP
- BHCG
- Unconjugated Estriol
What are the trisomies and how you differentiate between them
1- Down (21) ~> Nuchal T + Inhibin A + BHCG
الBHCG طويل في الي يكوله يصير منغولي لإن ينعوج حلكه ويظل ينحب
2- Edward (18) ~> Nuchal T
3- Ptau (13) ~> Determined by U/S
Note/ In 1st trimester only U/S but in 2nd maternal lab
When AFP get high and low
High:
- Multiple gestation
- Abdominal wall defects
- NTD
- Incorrect Dating
Low:
- Trisomy 21, 18
- Fetal demise
- Incorrect dating
How diagnose aneuploidy definitely
- Chorion villous sampling (10-13wks) لإن الماي قليل متكدر تسوي الجوا
- Amniocentesis (15-20wks)
What’s Reactive and non reactive NST
Reactive
- 2 accelerations in 20m
Non reactive
- Insufficient accelerations after 40m
DDx ~> (Sleep & Hypoxia) for baby and hypoglycaemia for mom
Mx ~> Repeat after 30m & Vibroacoustic stimulation & U/S & Biophysical profile
What’s Biophysical profile
- NST
- 4 U/S parameters:
Movement & Tone & Breathing & Amniotic fluid volume
حركة بشدة عالية تخليك تعرك وتتنفس اسرع
6~> Repeat in 24hrs
0-4 ~> Delivery
How you asses fetus during pregnancy
- NST
- Contraction stress test
- Biophysical profile
- Umbilical artery doppler
- AF index
Talk about umbilical artery doppler
Determines flow velocity and direction
• Flow should not stop and always be forward
• Absent or backward diastolic flow = abnormal
• Absence of end-diastolic flow velocity (AEDV)
• Reversal of end-diastolic flow velocity (REDV) -fetal demise imminent (indicates urgent delivery)
Braxton hix contractions
- Irregular
- Not increase in frequency & duration & intensity over time
- Relieved by analgesics
- Not associated with cervical changes
Breech presentation subtypes
• Frank breech (50-75%): rear first,flexed hips,extended knees
• Footling breech (20%): one or both legs first
• Complete breech (5-10%): rear first, flexed hips and knees
What’s effacement and how you know it’s started
- Thining & Shortening & Softening
“Bloody show”
• Blood-tinged mucous released vaginally
• Associated with onset of effacement
Bishop score
• Clinical tool for assessment of cervix in pregnant women according to:
- Dilation
- Effacement
- Position
- Consistency
- Station of fetus
• Maximum score = 13
Cardinal movement
EFDI ERE
• Engagement
• Flexion
• Descent
• Internal rotation
• Extension
• External rotation = restitution
• Expulsion
Time in hours for each stage in labour
- Latent ~> 8-10
- Active ~> 4-6 (1cm per hour)
- 2nd ~> 2
- 3rd ~> 30m
Indications for IOL
بشرط البيشوب اكبر او يساوي 6
- Post date or term
- Oligohydramnios
- IUGR
- IUD
- PROM
- Intrahepatic cholestasis
- Maternal alloimmunization
- Gestational diabetes at term
- Twin beyond 38 weeks
CI of induction of labour
- Complete placenta praevia or Vasa praevia
- Transverse lie
- Cord prolapse
- Previous classical caesarean section or myomectomy
- Fetal distress
Oxytocin side effects
- Tachysystole (may cause rupture or fetal hypoxemia)
- Hyponatremia (Same action of ADH)
- Hypotension (relaxes vascular smooth muscles)
- Fatigue & Sleepiness
What are Abnormal Labor Patterns in First Stage
• Protracted latent phase (dilation<6cm)
• Protracted active phase (dilation>6cm)
- Dilation progress less than1cm/hour
• Arrested active phase
- No cervical changes in 4hrs despite efficient uterine contractions
Causes of protracted (prolonged) 2nd stage
- CPD
- Malposition (OP)
- Hypotonic concentrations
- Inefficient mother’s push
Note/ Intervention by Instruments or Oxytocin or CS
How to diagnose ROM
- Speculum (pooling of fluid in posterior vaginal vault)
- Oligohydramnios in U/S
- Amniocure
- Nitrazzine test
- Fern test
Post term pregnancy complications
- Macrosomia
- Dysmaturity syndrome
- Oligohydramnios
- Mortality
Group B streptococcus infection manifest as
- Asymptomatic bacteriuria
- UTI
- Chorioamniotitis
- Postpartum endometritis
- Neonatal sepsis
When we give ABx prophylaxis to a pregnant woman before labour
- Positive culture for GBS
- GBS infection during pregnancy
- Hx of neonatal GBS infection
- Preterm labour
- PPROM
- Prolonged ROM
- Fever
Note/ ABx given 4 hours prior to delivery
What ABx given for prophylaxis of GBS infection
- Ampicillin or penicillin
If allergy with low anaphylaxis risk ~> Cefazolin
If allergy with high anaphylaxis risk ~> Clindamycin & Vancomycin
S&S of chorioamniotitis
• Fever
• Maternal leukocytosis
• Maternal tachycardia
• Fetal tachycardia (>160/min)
• Uterine tenderness
• Purulent or malodorous amniotic fluid
• Rarely bacteremia (usually with GBS or E.coli)
Mx of chorioamniotitis
- Broad spectrum ABx
• Intrapartum: ampicillin and gentamycin
• Cesarean delivery: add clindamycin or metronidazole - Prompt IOL or CS
Deceleration types and causes
- Early ~> Head compression
- Late ~> Placental insufficiency
- Variable ~> Cord compression or Oligohydramnios
Risks of preterm birth
- Hx of preterm labour
- Polyhdramnios
- Multiple gestation
- Cervical insufficiency
- Infection
- DM
- Smokinh
Mx of PPROM
If more than 36wks ~> Delivery
If less:
- Steroids
- Azithromycin + Ampicillin
If has contractions or any signs of maternal of fetal distress ~> Delivery
How can you predict preterm labour
- Cervical length in 13,16 weeks
- Fetal fibronectin in 22, 34 weeks
- Cervical dilation
Mx of preterm labour
• Beyond 34 weeks: admit and deliver
• Before 34 weeks:
- Maternal betamethasone (Tocolytic drugs to give steroids time to work)
- GBS prophylaxis (penicillin, ampicillin or clindamycin)
- Magnesium sulfate: neuroprotective (reduce risk of cerebral palsy according to ACOG)
How you identify miscarriage or SAB
• Often identified by falling serial hCG levels or ultrasound findings
• Presents clinically as vaginal bleeding and pelvic cramping
Causes of SAB
• Fetal chromosomal anomalies
• Maternal anatomic anomalies
• Uterine fibroids
• Uterine polyps or septa
• Abnormal implantation
• Corpus luteum failure
• TORCH infections
• Trauma
Risks:
- Age > 35
- Maternal (DM, HTN, Thyroid)
- Smoking & Alcohol
When you say this is complete abortion
Documented pregnancy & Closed OS & No RPOC on U/S & Vaginal bleeding with cramping
كيف تميز بين الاسقاط المحتمل والمفروغ منه
اثنينهم بيهم الم ونزف والطفل عايش بس عنق الرحم اذا انفتح يعني سيتم اسقاط
Causes of bleeding that resolves
• Implantation at time menses
• Cervical trauma during intercourse
• Subchorionic haemorrhage (due to developing placenta)
How you deal with abortion medically
- Mifepristone: progesterone antagonist
• Causes endometrial degeneration
• Only dispensed to limited facilities that perform terminations - Misoprostol: prostaglandin E1 analog
• Causes uterine contractions
• Must be hemodynamically stable
• Must have no evidence of hemorrhage or infection
شلون تعرف الطفل مات
تجيك الأم تكلك مدا احس الطفل يتحرك فمن تفحص لا تسمع نبض للطفل ولا تشوف حجم الرحم يناسب عمر الطفل ومن تسوي سونار صدك يطلع ماكو نبض
طفل ومات ببطن امه شتسوي فحوصات
• Fetal autopsy
• Placental examination
• Drug screen
• Fetal chromosome testing
• Testing for antiphospholipid syndrome
• Testing for fetomaternal hemorrhage
الطفل اذا مات ببطن امه هم ممكن يسوي sepsis
فقط في حالة الأم تعمدت تسوي اسقاط ودخلت شغلات غريبة بجسمها فتشوفها جايتك مصخنة وبيها ريحة افرازات تشك الخشم
Kleihauer-Betke acid elution assay
• Test of red cells in maternal circulation
• Detects hemoglobin F in fetal red cells
• Reports percentage fetal red cells in circulation
شوكت نكول هاي الأم عندها اسقاطات متكررة وشنو الأسباب
- More than 3 consecutive pregnancies
- Causes:
— Genetic
— Uterus ~> Cervical insufficiency & Polyp & Fibroid & Adhesions
— Immunological ~> APS
— Endocrine ~> Hypothyroidism & DM
— Haematological ~> Hypercoaguable state
When we say there’s cervical insufficiency
- Obstetric Hx ~> Pregnancy loss with no Sx
- Examination ~> Dilated & Effaced in early pregnancy
- U/S ~> Cervical length < 25 mm
Sites of ectopic pregnancy
- Fallopian Tubes ( Ampulla > Isthmus > Fimbrae)
- Abdomen
- Cervix
- Scar
What HTN in Pregnancy called
• It is a sign of an underlying pathology that may be preexisting or appears for the first-time during pregnancy that is why it is also called as TOXEMIA OF PREGNANCY
How you define proteinuria
• 300 mg/24 hour.
• 100 mg/dl concentration or more in 2 random specimens taken 6 hour apart
• +1 on dip stick method.
How PET classified
• Mild: diastolic blood pressure 90–99 mmHg, systolic blood pressure 140–149 mmHg
• Moderate: diastolic blood pressure 100–109 mmHg, systolic blood pressure 150–159 mmHg
• Severe: diastolic blood pressure ≥110 mmHg, systolic blood pressure ≥160 mmHg
Risk Factors for PIH (pregnancy induced hypertension)
- 18 > Age > 45
- APS & SLE
- Hx in previous pregnancy or Family Hx or being Primi
- MP & Molar
- BMI > 35 & DM
- Chronic hypertension
- Chronic renal disease
- Smoking
- Booking proteinuria
Gestational HTN
sustained rise of blood pressure to 140/90 mm of Hg or more on at least two occasions 4 or more hours apart beyond the 20th week of pregnancy or within the first 48 hours of delivery in the absence of other findings suggestive of preeclampsia in a previously normotensive women
Note/ if BP returns to baseline by 12 weeks postpartum = Transient hypertension of pregnancy
Note/ ثلثهم يصيرون بريكلامسيا
Postnatal investigation, monitoring and treatment of gestational HTN
• Measure blood pressure as clinically indicated
• Reduce antihypertensive treatment if their blood pressure falls below 130/80mmHg
• If a woman on methyldopa, stop 2 days after birth and change to alternative treatment if necessary
• women who did not take antihypertensive treatment and have given birth, treatment if their blood pressure is 150/100mmHg or higher.
• Offer all women medical review with their GP or specialist 6–8 weeks after birth
Define PE
It is a multisystem disorder of unknown etiology characterized by development of hypertension to the extent of 140/90 mm of Hg or more recorded on at least two separate occasions and at least 4 hours apart and in the presence of at least 300 mg protein in a 24-hour collection of urine, arising de novo after the 20th week of pregnancy in a previously normotensive, non-protein uric women and resolving completely by the sixth postpartum week
What are the eye Sx in PET
Eye symptoms- blurring, flashing lights, dimness of vision or at times complete blindness.
regained within 4-6 weeks following delivery
When we say this is mild-moderate PE
• BP<160 systolic and <110 diastolic with significant proteinuria and no maternal complications
2+ protein OR >300 mg proteinuria/ 24h
How you manage Mild-Moderate PE
• admission is advised:
• protein: creatinine ratio, the normal value In general is >30 equates to >300 mg proteinuria/ 24h
• 2-hourly BP
• 24 h urine collection for protein
• Daily fetal assessment with CTG
• Regular blood test (every 2-3 days unless symptoms or signs worsen)
• Regular US assessment
How you define severe PET
• blood pressure of 160/ 110mmHg or more in the presence of significant proteinuria
(>1g/24hor >or=2+ on dipstick) or if maternal complications occur
How you manage severe PET
• Offer pharmacological treatment to all women. Aim for BP of 135/85 mmHg or less
• Blood pressure measurement: Every 15–30 minutes until BP is less than 160/110 mmHg, then at least 4 times daily while the woman is an inpatient, depending on clinical circumstances
• Dipstick proteinuria testing: Only repeat if clinically indicated
• Blood tests: Measure full blood count, liver function and renal function 3 times a week
• Strict fluid balance chart, consider a catheter
• Fetal assessment: ultrasound assessment of the fetus, evidence of IUGR, estimate weight if severely preterm, assess condition using fetal and umbilical artery doppler
• CTG monitoring of the fetus
Anti hypertensive drugs
Aldomate (appears after 48 hours):
- Reduce Sympathetic drive
- Dose: 250-500 mg every 6-8 hours up to a maximum dose of 4gm/day.
- Loading single dose of 2 gm may act within 1-2 hours
Hydralazine:
- It is a vasodilator, increases renal and uteroplacental blood flow
- Dose: Initially 5 to 10 mg by slow intravenous injection
Nifidepine:
- Can be given sublingually (acts within 10 minutes) or orally (acts within 30 minutes) in a
- Dose: 10-20 mg 2-3 times daily
What are fetal indications (in doppler and CTG) for immediate delivery regarding PE
• reversed end-diastolic flow in the umbilical artery Doppler velocimetry
• non reassuring cardiotocography, or IUD
Timing of birth in PE
• Before 34 weeks:
- Continue surveillance, intravenous magnesium sulfate and a course of antenatal corticosteroids
• From 34 to 36+6 weeks:
- Planned early birth
- Course of antenatal corticosteroids
• 37 weeks onwards; Initiate birth within 24–48 hours
Postnatal investigation, monitoring and treatment of PE
- In women who did not take antihypertensive treatment:
• measure blood pressure at least 4 times a day while the woman is an inpatient
• start antihypertensive treatment if blood pressure is 150/ 100mmHg or higher
• Ask women about severe headache and epigastric pain each time blood pressure is measured - In women with pre-eclampsia who took antihypertensive treatment and have given birth:
- measure blood pressure at least 4 times a day while the woman is an inpatient
- every 1–2 days for up to 2 weeks after transfer to community care until the woman is off treatment and has no hypertension
• Reduce antihypertensive treatment if their blood pressure falls below 130/80 mmHg
• If a woman has taken methyldopa to treat pre-eclampsia, stop within 2 days after the birth and change to an alternative treatment if necessary
• Measure platelet count, transaminases and serum creatinine 48–72 hours after birth
What percentage of PE complicated by Eclampsia and when
• It complicate 1-2% of preeclamptic pregnancies
• May be the initial presentation of PE and may occur before hypertension or proteinuria
• Ante - Intra - Post (within 48h)
Mx of Eclampsia
- CABC
- IV access
- CBC & RFT & LFT & LDH & GUE
- MgSO4 (watch for toxicity every 1h)
- Antihypertensive if 160/110
- Foley catheter
- Strict monitoring for Vital signs & CTG
- Deliver once mom is stable (hird stage, 5-10U oxytocin, no Ergometrine because of increase BP)
How we give MgSO4
MgSo4 for control of fits and preventing further seizures.
Loading 4g over 5-10min followed by an infusion 1g/h for 24h.
Further 2g if further fits
When we give MgSO4
• ongoing or recurring severe headaches
• visual scotomata
• nausea or vomiting
• epigastric pain
• oliguria and severe hypertension
• progressive deterioration in laboratory blood tests
What drugs you give for urgent BP control in Pregnancy
Labetolol:
10 – 20 mg IV, then 20 – 80 mg every 20 – 30 minutes to a maximum dose of 300 mg
Constant infusion 1 – 2 mg/min IV
Hydralazine:
5 mg IV or IM, then 5 – 10 mg IV every 20 – 40 min
Constant infusion 0.5 – 10 mg/h
Nifedipine:
10 - 20 mg orally, repeat in 30 minutes if needed, then 10 - 20 mg every 2 - 6 hours
How you know MgSO4 toxicated your patient
- Confusion
- Loss of reflexes
- Respiratory depression
- Hypotension
How you manage MgSO4 toxicity
• Stop MgSO4
• IV 1 g 10% calcium gluconate slow
• Administer Oxygen
What percentage of PE complicated by HEELP
- 5-20% of preeclamptic pregnancies
- Liver enzymes increase, platelets decrease before hemolysis occurs
What are S&S for HEELP
Symptoms:
• Epigastric or RUQ pain
• Nausea and vomiting
• Urine is tea-colored due to hemolysis
Signs:
• Tenderness in RUQ
• Increase BP and other features of PE (Hypertension may be mild or even absent)
• Eclampsia may co-exist
Mx of HEELP
• Treatment is supportive and as for eclampsia (MgSo4 is indicated)
• Although platelet levels may be very low, infusions only required if bleeding, or for surgery and <40
Corticosteroids to manage HELLP syndrome
Do not use dexamethasone or betamethasone for the treatment of HELLP syndrome
Chronic hypertension in pregnancy
The presence of HTN of any cause antedating or before the 20th week & beyond the 12w after delivery
Fetal monitoring in chronic hypertension
• Ultrasound for fetal growth, amniotic fluid volume assessment, and umbilical artery doppler velocimetry at 28 weeks, 32 weeks and 36 weeks
How you manage chronic hypertension in pregnancy
Note/ If BP normal or low: no treatment
- Weight management & Exercise & Diet
- Aspirin 75 mg once daily from 12 weeks until 4w before delivery
- Consider labetalol to treat chronic hypertension in pregnant women. Nifedipine for women in whom labetalol is not suitable, or methyldopa if both labetalol and nifedipine are not suitable
Chronic hypertension in pregnancy & Timing of birth
Do not offer planned early birth before 37 weeks to women with chronic hypertension whose blood pressure is lower than 160/110 mmHg, with or without antihypertensive treatment, unless there are other medical indications
Treatment of HTN during lactation
• Enalapril to treat hypertension in women during the postnatal period, with appropriate monitoring of maternal renal function and maternal serum potassium
• Nifedipine or Amlodipine if the woman previously used this to successfully control her blood pressure
• Atenolol or labetalol to the combination treatment
What’s HG
- Weight loss
- Muscle wasting
- ketonuria
- Dehydration
- Electrolyte disturbance
- ptyalism (inability to swallow saliva)
DDx of HG
Obstetrical causes:
• Multiple gestation
• GTN
Non obstetrical causes:
• Renal problem :UTI (which often coincides with hyperemesis)
• Electrolyte disturbance: hypercalcaemia
• Endocrine : Addison’s disease & thyrotoxicosis & DKA
• GIT: Cholecystitis & Appendicitis
• Neurological: Raised intracranial pressure
Risks of HG
- Missed abortion
- IUGR
- Preterm labour
- Maternal hyponatraemia leading to central pontine myelinolysis
- Thiamine deficiency leading to Wernicke’s encephalopathy
Hx of HG
– Abdominal pain
– Urinary symptoms
– Infection, fever
– Drug history
– FBM
– Vaginal bleeding
– Headache
– Chrome H.Pylori infection
– Thyroid, DM
Investigations for HG
- CBC
- U/S
- Dipstick for ketonuria
- TFT & LFT & RFT
- Urea & electrolyte
- Serum Glucose
When you admit patient with vomiting
● Continued nausea and vomiting and inability to keep down oral antiemetics
● Continued nausea and vomiting associated with ketonuria and/or weight loss (greater than 5% of body weight), despite oral antiemetics
● Confirmed or suspected comorbidity (such as urinary tract infection and inability to tolerate oral antibiotics)
1st line Tx of vomiting
- Cyclizine 50mg every 8h
- Promethazine
- Prochlorperazine
2nd line Tx of vomiting
- Metaclopramide
- Ondasetron
3rd line Tx of Vomiting
Corticosteroids
Things to avoid in Tx in HG
• Pyridoxine is not recommended for NVP and HG
• Diazepam is not recommended for the management
• Dextrose infusions are not appropriate unless the serum sodium levels are normal and thiamine has been administered
Non pharmacological Tx of NVP
● Frequent small meal
● Good hydration
● Avoiding iron-containing preparations
● Rest with psychological support
● Ginger (1000mg): may be used by women wishing avoid antiemetic therapies in mild-moderate NVP
● Acustimulations : acupuncture, acupressure
What are the dimensions of pelvic brim
- Antroposterior ( true conjugate) : 11 cm
- Transverse (widest) : 13.5cm
Dimensions of pelvic cavity
TD, APD: 12 cm
How you assess adequacy of pelvic cavity
1- Assess the sacrum ( straight or curved)
2- palpation of the sacrospinous ligaments,which should be of a length that will accommodate three fingers-breadths
3- Palpate side walls( concave, straight, converging)
4- prominence of ischial spines, & interspinous diameter
Dimensions of pelvic outlet
- AP: 13.5 cm (Widest) is measured from the lower part of symphysis pubis to the lower end of the sacrum (not the coccyx because it is a movable bone)
- TD: is measured between the inner surface of the ischial tuberosities : 11cm.
How you assess adequacy of pelvic outlet
- The intertuberous diameter can be determined by external palpation using closed fist. Intertuberous diameter should accept 4 knuckles on pelvic exam (10 cm)
- Wide Sub-pubic arch (Broad), Accept ˃2 fingers
What’s the best pelvis for vaginal delivery
- Sacral promontory can not be felt
- Diagonal conjugate: ˃11.5 cm
- Curved concave sacrum
- Ischial spines are not prominent
- Interspinous diameter: ˃ 9.5 cm
- Intertuberous diameter accept 4 knuckles on pelvic exam ≥10 cm
- Wide Subpubic arch. Accept ≥ 2 fingers
Angle of inclination
- It is the angle that any pelvic plane makes with the horizontal
- The angle of the inlet is normally 60 to the horizontal in the erect position
More angle = delay the head entering the pelvis during labour
Pelvic axis
Imaginary curved line which shows the part which the fetal head follows during its passage through the pelvis during childbirth
Plateyloid pelvis
Pelvic brim TD»_space;>APD Æ kidney shape
Sacral promontory pushed forwards
Anthropoid
Pelvic brim APD > TD
Long & narrow pelvic canal with long, concave sacrum
Divergent pelvic sidewalls
Android pelvis
Pelvic brim is heart shaped or triangular
Pelvis funnels from above downwards (convergent sidewalls)
Prominent ischial spine
Straight sacrum → contracted pelvic outlet
Narrow pubic arch
Gynecoid pelvis
TD diameter ˃ APD (inlet)
Rounded—slightly oval inlet
Straight pelvic sidewalls with roomy pelvic cavity Good sacral curve Concave
Ischial spines are not prominent
Wide subpubic arch ˃ 90 ̊
The skull is formed of the face , the vault & the base
What’s vault?
The bones of the vault (not joined) are frontal , parietal & occipital, temporal
Occiput, Sinciput and vertex?
- Occiput
boney prominence behind post fontanelle - Vertex
diamond shaped area between ant & post fontanelles & parietal eminences - Sinciput
The area in front of the anterior fontanelle
Sutures of fetal skull
- Sagittal suture: between 2 parietal bones
- Frontal suture: between 2 frontal bones
- Coronal suture: between parietal & frontal
Fontanelles
1.the anterior fontanelle: (bregma)
2.the posterior fontanelle: (lambda)
In OP position, what’s the attitude of fetal skull
Ociipitofrontal 11.5 cm
In brow presentation, what’s the attitude of fetal skull
Mentovertical 13.5cm
In face presentation, what’s the attitude of fetal skull
Submento vertical (bregmatic) 9.5cm
HCG half life, peak and function
Half life of 6- 24 hr
Peak in pregnancy at 9-11wk gestation
يحافظ على الجستيشنال ساك حتى تتكون المشيمة
Pregnancy tests
Urine:
- By rapid dipstick test (1-2 min)
- Detection limit of around 50iu/L
- Positive 14 days after ovulation
Blood:
- Detection limit around 0.1-0.3 iu/L
- It can detct pregnancy 6-7 days after ovulation
When U/S can detect pregnancy
- TVS the GS can be visualized(2-4mm) around 4.4-4.6 wk(32-34 days) following the onset of LMP
- Abdominal US, GS can be seen during the 5th wk post menstruation
The 1st embryonic structure seen inside the chorionic cavity is
Secondary yolk sac, which indicate a true gestational sac thus excluding the possibility of a peudosac or an ectopic pregnancy
Why do plasma volume rise in pregnancy
Steroids cause S&W retention
Acceptable levels of HB in pregnancy
A level of Hb≥ 11g/dl is adequate in 1st trimester
A level of ≥10.5g/dl is adequate in 2nd& 3rd trimester
A level of ≥10g/dl is adequate postpartum
How diaphragm affected by pregnancy
Diaphragm is elevated 4 cm
Cardiac output varies with stages of labour
• 1st stage and 2nd stage.
- ↑ H.R because of Pain, maternal effort.
- ↑plasma volume. Uterine contractions which seqeezes 300- 500 ml into maternal circulation
How uterus affected by pregnancy
- Pear shaped, 6.5cm, 70 gm, Pelvic organ
In pregnancy, oval shape, 32cm long, 1000gm (Hypertrophy & hyperplasia of muscle cells) - It has two parts: corpus body & cervix
3rd trimester uterus — upper and lower segment - Uterine blood flow 700ml/min
Chadwick sign
Increase vascularity = Bluish discolouration of cervix
How blood glucose affected by pregnancy
• In 1st half of pregnancy FBS reduced
• In 2nd half FBS ↑( increased insulin resistance)
Incidence of breech presentation
• Incidence :20% at 28 wks
• 3-4% at term
Causes of breech presentation
• Maternal :fibroids ,congenital uterine abnormalities and uterine surgery
• Fetal :multiple gestation ,prematurity ,fetal abnormality (anencephaly or hydrocephaly),
fetal neuromuscular conditions ,oligohydramnios and polyhydramnios
• Placental: placenta praevia
When we perform ECV
Performed at or after completed 37 wks
How we perform ECV
- Experienced obstetrician
- Nifedipine
- Left lateral tilt
- Empty bladder
- U/S Guidance
- Shouldn’t last more than 10m
- anti D should be given if the women is RH negative
CI to ECV
• Fetal abnormalities like hydrocephalus
• Placenta praevia
• Oligohydramnios or polyhydramnios
• History of APH
• Previous cesarean or myomectomy scar on the uterus
• Multiple gestation
• Preeclampsia or hypertension
• Plan to deliver by caesarean section
Complications of ECV
• placental abruption
• premature rupture of membrane
• cord accident
• Transplacental haemorrhage
• Fetal bradycardia
How you deliver breech baby vaginally
• Delivery of buttocks with episiotomy can be cut when fetal anus seen at maternal fourchette
• Delivery of the leg by pinard manoeuver
• Delivery of the body
• Delivery of shoulders by Lovesets manoeuver
• The head is delivered by Mawriceau Smellie Veit manoeuver or by using forceps
Source of amniotic fluid
- secreted by amnion but by 10th weeks via the skin and umbilical cord
- At 16th weeks gestation the fluid will mainly formed of fetal urine ,and lung secretion
If woman reached term what will happen to amniotic fluid, increase or decrease
From term there is rapid fall in volume
What are the functions of amniotic fluid (4p’s)
- Protect the fetus from mechanical injury
- Permit movement of fetus and prevent limb contractures
- Permit fetal lung development
- Prevent adhesions between fetus and amnion
How you diagnose Polyhydramnios
DVP = 8cm
AFI = 25 cm (above 95 centile)
Causes of Polyhydramnios
- 2/3rd are idiopathic
- Fetal causes that is associated with impaired swallowing like esophageal atresia,duodenal atresia
- Anencephaly
- Twin to twin transfusion syndrome
- Parvovirus B19 infection
- Maternal causes like multiple pregnancies ,maternal diabetes mellitus and Rh incompatibility
- Lithium
Mx of polyhydramnios
- Tx of the cause if possible
- Amniodrainage
- Assessing the risk of preterm labour due to uterine overdistension
- Pharmacological like NSAID (indomethacin ) and sulindac
Complications of polyhydramnios
Maternal:
Respiratory compromise - abdominal discomfort - APH - PPH - Preterm labour
Fetal:
Congenital malformations - Preterm birth - Increased perinatal morbidity and stillbirth
umbilical cord prolapse - abnormal fetal presentation
How you diagnose Oligohydramnios
AFI of less than 5 cm or DVP of less than 2cm
Causes of oligohydramnios
- Idiopathic
- Preterm premature rupture of membrane
- Birth defect like renal agenesis ,renal dysplasia and posterior urethral valve
- Post term pregnancy >40wks
- Placental dysfunction like placental thrombosis infarction and placental abruption
- Maternal diseases like GDM ,preeclampsia ,chronic hypertension and connective tissue diseases
- Drugs like ACE inhibitor and NSAID
- Fetal chromosomal abnormalities
Clinical presentation of oligohydramnios
- Patient may give history of leaking liquor
- The patient may give history of reduced fetal movement
- Fundal height is less than the expected for corresponding gestational age
- Uterus appear full of fetus
- Examination by speculum may reveal leaking liquor
Investigations for Oligohydramnios
- U/S examination to assess AFI, DVP and Doppler study
- Biophysical profile
Complications of oligohydramnios
Maternal:
- Operative delivery
- Preterm labour
- Miscarriage
Fetal:
- Cord compression
- Pressure deformities like club foot
- Lung hypoplasia
- Meconium aspiration
- IUFD
When we say this pregnancy is high risk
- Maternal age <18 or >35
- Chronic disease – hypertension, diabetes, cardiovascular or renal disease, thyroid disorder
- Preeclampsia
- Rh isoimmunization
- History of stillbirth
- FGR
- Postterm pregnancy
- Multiple gestation
- History of preterm labor
- Previous cervical incompetence
What factors can reduce fetal movement
• Sleep
• Sound
• Smoking
• Drugs
• Blood glucose level
What’s Non stress test (NST)
- Monitoring the fetal heart rate in response to fetal movement
• Reactive: 2 or more FHR accelerations at least 15 bpm with duration of at least 15 seconds in 20m
• Nonreactive NST: reactive criteria not met within 30 minutes
Fetal Acoustic & Vibroacoustic Stimulation
• Applied to maternal abdomen for 2-5 seconds up to 3 times
• Stimulates fetal movement - acceleration of FHR
Contraction stress test
• Records FHR response to stress of uterine contractions (Compress arteries to placenta)
• Uterine Contractions induced by nipple stimulation or Oxytocin (Caution: may cause pt to go into labor!)
What are interpretations of contraction stress test
– Negative: 3 good contractions lasting 40 seconds in 10 minute interval with no late decelerations
– Positive: persistent late decelerations with more than 50% of the contractions
What you can know by U/S regarding pregnancy
• Early identification of pregnancy & dating & gender
• FHR and breathing movements
• Anomalies
• Amniotic fluid index
• Location of placenta and grading
• Fetal death
• Determination of fetal position and presentation
• Accompanying procedures (ex: Amniocentesis)
US assessment of fetal well-being
• Amniotic fluid assessment
• Biophysical profile
• Umbilical artery & MCA Doppler
What’s biophysical profile
1) Fetal breathing movement
2) Fetal movement of body or limbs
3) Fetal tone
4) Amniotic fluid volume
5) Reactive NST with activity
• Scoring:
– 2 is given for normal
– 0 is given for an abnormal finding
– Between 8-10 is good
When doppler is abnormal
Absent or reversed velocities abnormal
Note/ We use ut for anaemia & echo & preeclampsia & fetal wellbeing
Why we do amniocentesis
– Genetics
– Fetal lung maturity
شلون تعرف الطفل عنده IUGR شنو اول شي يصير والتغيرات الي تلحقه بعدين
حركته تقل بعدها الماي يقل لإن ميبول بعدها تغيرات بالدوبلر ومن ثم يموت
Normal fetal growth
• Cellular hyperplasia.(8- 20w) symetric
• Hyperplasia and hypertrophy (20-28) mixed
• Hypertrophy only. (28-40) asymetric
Symmetrical IUGR causes and definition
• Head circumference, length and weight are all proportionally reduced
• Causes:
1- chromosomal or genetics abnormality or anomalies
2- congenital infection
3- maternal cause ( age, weight, hypertension, smoking, alcohol abuse, thrombophilia, nutrition)
ASYMETRICAL IUGR definition
• Fetal weight is reduced , but normal length and head circumference
What parameters in U/S determine the type of IUGR and what determine management
BPD & FL & Abdominal circumference = Type
Amniotic volume & Doppler ultrasound = Mx
The optimum timing of delivery is determined by
• Gestational age
• Underlying etiology
• Fetal condition
Role of steroids
Steroids reduce the incidence of RDS, IVH and death
Mx of IUFD
• Confirmation of IUFD
• Base line investigation (Blood group , Rh, fibrinogen, CBC)
• Induction of labor
• Caesarean section
Post delivery Mx for IUFD
• Psychological support
• Suppression of lactation (dopamine agonists)
• Evaluation of the new born baby (اوديه للأطفال يشوفون شنو سبب الموت حتى اتجنبه بالأحمال السابقة)
What’s Shoulder dystocia
- The anterior shoulder becomes trapped behind the symphysis pubis
- The posterior shoulder may be in the hollow of the sacrum or high above the sacral promontory
Causes of Shoulder dystocia
• Fetal Macrosomia
• Maternal Obesity
• Instrumental delivery
• Anencephaly
• Fetal ascites or congenital abnormalities
How you may know that shoulder dystocia is about to happen
Once the head delivered it looks like it is trying to return to vagina, which is caused by reverse traction
Mx of Shoulder dystocia
H = Call for help
E = Episiotomy
L = Leg (McRobbert)
P = Suprapubic Pressure
E = Entermaneuver (Rubin & Clockscrew)
R = Arm (Wood)
Cleidotomy
Zavenelli
Craniotomy if baby is dead
Note/ All done for 30s
Complications of shoulder dystocia
- The vessel in the fetal neck are occluded after delivery of the head and cerebral damage will occur if delivery is delayed more than 5 minutes
- Erbs palsy if traction
- PPH
- CS in next pregnancy
What’s the thing you advice women to take before pregnancy and antenatally
All pregnant women advised to take folic acid (0.4 mg, once daily) pre-pregnancy and antenatally
Aim of ANC
• To optimize pregnancy outcomes for women and babies
• To prevent, detect and manage those factors that adversely affect the mother and baby
• To provide advice, reassurance, education and support for the woman and her family
• To deal with the ‘minor ailments’ of pregnancy
• To provide general health screening
What things you should do in booking visit
- BMI
- BP
- Dietary & Exercise advice
- Investigations (CBC & B GROUP & RH & SICKLE CELL & THALASSEMIA & GUE & OGTT)
- Infections screening (HBV & HCV & STI & RUBELLA)
What acceptable weight should pregnant woman gain
If normal BMI = 11-16
If overweight BMI = 7-11
If obese BMI = 5-9
What are maternal complications of obesity
MATERNAL ANTENATAL:
• Difficult to assess growth and anatomy of the fetus
• Increase risk of GDM (3 times >BMI<30)
• HT disorders of pregnancy
• Risk of VTE
Maternal intrapartum :
• Difficulty with anesthesia
• Difficulty with monitoring in labour
• Increase instrumental delivery ,c/s rate
• Shoulder dystocia
• Maternal postnatal :
• VTE risk
• Wand break down and infection
• Postnatal depression
What are the fetal complications of obesity
- Increase congenital malformations :NTD 3 times (folic acid 5mg /day)
- Macrosomia
- FGR
- Miscarrage & Stillbirth
- Increase risk of childhood obesity and diabetis
Aspirin فوائد
- IUGR
- PRETERM BIRTH
- MISCARRIAGE
اذا عرفت وحدة عندها ضغط باول ترايمستر شتسويلها او شنو تستفاد من هالمعلومة
This enables early initiation of treatment including antihypertensive agents and low-dose aspirin
Complications of Rubella
- Blindness
- Deafness
- Intracranial calcification
- Handicap
- Mental retard
وحدة عندها HBV وجابت شتسوي للطفل
The infant should receive hepatitis B vaccine and one dose of hepatitis B immune globulin within the first 12 hours of life ,1 and 6 months of age
How you can deal with patient having HIV in pregnancy
- Antiretroviral therapy (ART) by 24 weeks’ gestation
- Planned elective c/s for those with viral load ≥400 HIV RNA copies/ml at 36wk gestation
- Exclusive formula feeding