Deck 1 Flashcards
What is the prevalence of 3rd or 4th degree tears in a primiparous woman during a forceps delivery?
8-12%
What is the overall prevalence of 3rd or 4th degree tears?
2.9%
What is the prevalence of 3rd or 4th degree tears in a primiparous woman during a ventouse delivery
4-8%
What is the prevalence of 3rd or 4th degree tears in a multiparous woman
1.7
What is the prevalence of 3rd or 4th degree tears in a nulliparous woman
6.1%
What is the prevalence of vulval-vaginal tears in a ventouse delivery
10%
What is the prevalence of vulval-vaginal tears in a forceps delivery
20%
What is the stillbirth rate at 39 weeks gestation?
Rate 3.9:1000
It is common 1:200
What are X-linked recessive disorders (11)
Becker's & Duchene's muscular dystrophy Fabry's "Fatty" & Hunter's "Sugary" disease Fragile "X" Haemophilias A & B Red-Green colour blindness Ocular albinism Testicular Feminisation syndrome Wiskott-Aldrich's syndrome (eczema-thrombocytopenia-ID)
If mom has an X-linked recessive disorder
100% sons will inherit the disorder
100% daughters will be carriers
If mom is a carrier for an X-linked recessive disorder
50% sons will have the disorder
50% daughters will be carriers
If dad has an X-linked recessive disorder
0% son affected
100% daughters carriers
What are X-linked dominant disorders (3)
Vit D-resistant rickets: Hypophosphatemic rickets, bones become painfully soft and bend easily, symptoms usually begin in early childhood
IP: rash from infancy
Rett’s: repetitive hand movements
If mom has an X-linked dominant disorder
50% daughters & sons will inherit the allele and disease
If dad has an X-linked dominant disorder
0% sons affected
100% daughters
What are Y-linked disorders?
Hairy ears
What are common autosomal dominant disorders (12)
Huntington's Neuro-Fibromatosis, Marfan's & Ehlors-Danlos Tuberous sclerosis Achondroplasia Myotonic dystrophy Adult PCKD Gilbert’s von Hippel-Lindau von Willebrand BRCA1/2
What is the pattern of inheritance for autosomal dominant disorders in one parent?
Each child has a 50% chance of inheriting the disorder Affects males & females equally Vertical inheritance Delayed onset New mutations occur in older fathers Variable expression/reduced penetrance
What are common autosomal recessive disorders?
TS, SC, CF [Tay-Sachs, Sickle Cell, Cystic Fibrosis {1:25}]
B-thal
CAH
Wilson’s, hemochromatosis
What is the pattern of inheritance for autosomal recessive disorder carrier for both parents?
1/4 (25%) homozygous diseased child
1/4 (25%) homozygous normal child
1/2 (50%) heterozygous/carrier child
At 18w, what are the chances of Parvovirus fetal infection?
25% (>15-20w)
At 8w, what are the chances of Parvovirus fetal infection?
15% (5-15w)
At 28w, what are the chances of Parvovirus fetal infection?
70% (>21w-term)
Before 20w, what are the complications of Parvovirus fetal infection?
IUD (5-10% fetal loss rate)
Hydrops (3-10%) with 50% IUD
What is the failure rate of the filshie clip resulting in pregnancies?
2-5 in 1000 (at 10 years)
What is the detection rate (sensitivity) of the Quad test for Trisomy 21?
70-75%
What is the false positive rate of the Quad test for Trisomy 21?
5%
What is the detection rate (sensitivity) of the triple test for Trisomy 21?
65-70%%
What is the false positive rate of the triple test for Trisomy 21?
5%
What is the detection rate (sensitivity) of the Doub test for Trisomy 21?
60-65%
What is the false positive rate of the doub test for Trisomy 21?
5%
What is the detection rate (sensitivity) of the combined test for Trisomy 21?
90%
What is the false positive rate of the combined test for Trisomy 21?
5%
What is the detection rate (sensitivity) of the cfDNA test for Trisomy 21?
99%
What is the false positive rate of the cfDNA test for Trisomy 21?
0.1%
For the normal female bladder, the first sensation of bladder filling occurs at:
150-200mL
For the normal female bladder, the strong desire to void occurs at:
400-600mL
For the normal female bladder, the normal flow rate (Qmax) is
> 15ml/s
Pves=
Pdet+Pabd
For the normal female bladder, the normal refill flow rate is:
60-80mL/min
What is the incidence of nerve injury in Gyn surgeries?
1.1-1.9% of all cases
What are the causative factors of peri-operative nerve injury? (5)
Patient mal-position Improper placement of self-retining retractors Hematoma formation Entrapment Transaction
Most common nerve injuries:
Femoral Obturator Sciatic- common peroneal, tibial Ilio-hypogastric Ilio-inguinal Pudendal Lateral cutaneous Genitofemoral
Nerve injury in Gynae surgeries with both motor and sensory function:
Femoral (L2-4)
Obturator (L2-4)
Sciatica (L4-S3), common peroneal, tibial
Nerve injury in Gynae surgeries with only motor function:
Ilio-hypogastric T12-L1 Ilioinguinal T12-L1 Genito-femoral L1-2 Lateral cutaneous L2-3 Pudendal S2-3
Name the nerve injury associated with the clinical presentation of “inability to climb stairs”
Femoral L2-4
Sensory: ant/med thigh, med calf
Motor: Hip flex/add, knee ext
Name the nerve injury associated with the clinical presentation of “minor ambulatory problems”
Obturator L2-4
Sensory: upper medial thigh
Motor: thigh adduction
Name the nerve injury associated with the clinical presentation of “Sciatica”
Sciatica L4-S3
Sensory: Below knee exc medial foot
Motor: Hip ext, knee flex
Name the nerve injury associated with the clinical presentation of “foot drop”
Common peroneal nerve L4-S3
Sensory: lateral calf, dorsum
Motor: dorsiflex & eversion
*brace at fibular neck
Name the nerve injury associated with the clinical presentation of “foot cavus deformity”
Tibial nerve L4-S3
Sensory: Toes, plantar
Motor: plantarflex & inversion
Name the nerve injury associated with the clinical presentation of “sharp, burning radiating pain from incision to mons, labia or thigh”
Iliohypogastric T12-L1
Sensory: mons, lateral labia, upper inner thigh
Name the nerve injury associated with the clinical presentation of “sharp, radiating pain from incision to mons, labia, inner thing AND groin & symphysis”
Ilioinguinal T12-L1
Sensory: groin, symphysis
Name the nerve injury associated with the clinical presentation of “meralgia parasthetica, pain/parasthesia AP-lat thigh”
Lateral cutaneous nerve L2-3
Sensory: AP/lat thigh
Name the nerve injury associated with the clinical presentation of “pain/parasthesia labia, fem triangle”
Genito-femoral L1-2
Sensory: labia, fem triangle
Name the nerve injury associated with the clinical presentation of “claw hand”
Ulnar C8-T1
Sensory: Medial 1 1/2 fingers
Motor: small muscles of hand
“Klumpke’s Palsy” C8-T1
Sensory: medial arm, forearm, hand, medial 2 fingers
Motor: intrinsic hand muscles
Name the nerve injury associated with a brace placed too laterally in Trendelenburg during scope-surgery
Klumpke’s palsy, loss of small muscle function
Name the nerve injury associated with the clinical presentation of “wrist drop”
Radial nerve C5-T1
Sensory: dorsal tips of latera 3 1/2 fingers
Motor: wrist and finger ext
Name the nerve injury associated with the clinical presentation of “waiter’s tip”
“Erb’s Palsy”
Sensory: none
Motor: Abd shoulder, flex elbow, supination
Name the surgeries during which the obturator nerve can be injured
Retroperitoneal surgeries: endometriosis excision, TOT, Paravaginal defect repairs
Sensory loss in the upper medial thigh and motor weakness in hip adductors or “some abulatory problems” after TOT is indicative of which nerve injury?
Obturator
“Footdrop” is indicative of which nerve injury, and what is the mechanism of injury?
Common peroneal nerve, from compression of the posterolateral aspect of the fibular neck in hyperflexion of thighs (improper lithotomy)
Pain that worsens on sitting at the glutes, perineum and vulval region is indicative of which nerve injury? And occurs after which gynae surgery?
Pudendal nerve injury during sacrospinous fixation
What is the risk of stress incontinence in a caesarean?
4% (8% in VD)
What is the risk fetal injury of in a caesarean?
2%
What is the risk of blood transfusions in a caesarean?
1.7%
What is the risk of ICU admission in a caesarean?
9:1000
What is the risk of hysterectomy in a caesarean?
7-8:1000
What is the risk of further surgery in a caesarean?
5:1000
What is the risk of bladder injury in a caesarean?
1:1000
What is the risk of VTE in a caesarean?
4-16:10 000
What is the risk of ureteric injury in a caesarean?
1: 10 000
What is the risk of death in a caesarean?
1 : 12 000
What is the future risk of IUD in a caesarean?
1-4 :1000
What is the future risk of uterine rupture in a caesarean?
2-7:1000
What is the future risk of PP/PAS in a caesarean?
4-8:1000
What SSRI (antidepressant) is contraindicated in pregnancy and why?
Paroxetine (Paxil), due to associated cardiac defects.
Which SNRI (Antidepressant) is used in treatment-resistant disorders and what further monitoring is required?
Venlafaxine (Effexor), requires close BP monitoring throughout pregnancy.
What are the potential risks of antidepressant therapy in pregnancy?
Birth defects, mainly cardiac (1-2%)
IUGR
LBW
Low AS
What is the risk of pulmonary HTN associated with antidepressant therapy in pregnancy?
6-12:1000 (vs 1-2:1000 Gen Pop)
Slightly reduced neonatal withdrawal from antidepressants is associated with which antidepressant and why?
Fluoxetine (Prozac). Due to its long half-life.
Which antipsychotics are recommended in pregnancy by the UKTIS?
Olanzapine
Quetiapine
Which antipsychotic is not recommended in pregnancy in association with an increased risk of cardiac malformations?
Risperidone (30%)
What vitamin level is reduced in second-generation atypical antipsychotics usage and what is the treatment?
Folate. Consider PPC use of 5mg/day
What are the side effects of olanzapine and quetiapine in pregnancy, and how to manage/follow up?
Weight gain, GDM.
GTT 24-28w even without other risk factors.
Which mood stabilisers are considered safer in pregnancy?
Olanzapine, quetiapine and aripiprazole
What advice should be given to a pregnant woman regarding lithium?
Lithium should be avoided if possible, especially in the first trimester, and where possible prescribing stopped before conception.
What is the possible risk of lithium usage in pregnancy?
Congenital malformations, notably Ebstein’s anomaly 20x more likely.
How should lithium cessation/continuation in pregnancy be done?
Cessation should be done over 4 weeks.
If unwell, a switch to another antipsychotic drug can be done or Lithium restarted in the second trimester (IF not BF).
How should lithium cessation/continuation in pregnancy be monitored?
4-weekly serum levels until 36w
[aim lower therapeutic level]
weekly from 36w until delivery
within 24h after (hospital)birth
Which mood stabiliser is absolutely contraindicated in pregnancy and why?
Sodium valproate (Epilim) There is a high risk of NTD (100-200:10000 from 6:10000) and affects intellectual development in children up to 30% (Valproate syndrome)
Whats are the malformations associated with the mood stabiliser Carbamazepine use in pregnancy?
NTD (20-50:10000 vs 6:10000)
other major GI and cardiac malformations
Whats are the malformations associated with the mood stabiliser Lamotrigine use in pregnancy?
Risk of oral cleft (9:1000)
Whats is the recommendation for benzo use in pregnancy ie, Diazepam (valium), Alprazolam (Xanax) or Lorazepam (Ativan)?
Short term, for extreme anxiety or agitation.
Whats are the risks of benzo usage in pregnancy?
Cleft palate and other malformations
Premature deliveries
Floppy baby syndrome and neonatal withdrawal is possible
Whats is the rate of depression and anxiety during pregnancy?
12% experience depression
13% experience anxiety
What is the percentage of women affected by anxiety and depression in the first year following childbirth?
15-20%
What is the occurrence of postpartum psychosis?
1-2:1000
What disorder predisposes women to postpartum psychosis?
Bipolar 1 disorder
What is the management for a PUQE score of 3-12?
Antiemetics in community care
Lifestyle and dietary changes
What is the management for a PUQE score of >= 13?
- No complications
- Not refractory to antiemetics
Ambulatory/Daycare monitoring until no ketonuria
- IVF NS + K
- antiemetics
- Thiamine
What is the management for any PUQE with complications or failed daycare management?
Inpatient management:
- IVF NS + K
- antiemetics
- Thiamine
- Thromboprophylaxis
- MDT
- Consider steroids
What are the diagnostic criteria for HG?
> 5% weight loss
Dehydration
Electrolyte imbalance