Maternal medicine Flashcards
(152 cards)
A black multigravid woman who underwent a CS for failure to progress after an induction for PET complicated by endometritis, comes to see you 5/52 post partum with fatigue/dyspnoea/orthopnoea. O/E HR 110, BP 140/95, pretibial oedema, RUQ tenderness, fine crackles at both bases, CXR cardiomegaly, temp 36.7. What is Dx?
a) post partum cardiomyopathy
b) mitral stenosis
c) pulmonary hypertension
d) bacterial endocarditis
A - post partum cardiomyopathy
At routine cardiovascular examination in pregnancy, which of the following may be normal:
a) diastolic murmur
b) 3rd heart sound
c) ejection click
d) renal bruit
b - third heart sound
perceptible in 80% of pregnant women
A woman with severe idiopathic cardiomyopathy is having an atonic PPH. EBL 800-1000ml. You have given 10 units Syntocinon but she is still bleeding. Next agent should be?
a) further 10 units oxytocin IV
b) oxytocin 40units in 1L Hartman’s over 4 hours
c) prostaglandin F2-alpha 1.5mg intramyometrially
d) ergometrine 0.25mg intravenously
e) misoprostol 200-400mcg orally
d) ergometrine 0.25mg intravenously
O
**Note if infusion ideally in 500mL of fluid and rate is reduced by half
Oxytocin in slow infusion is recommended (as per O&G magazine)
https: //www.ogmagazine.org.au/22/3-22/maternal-heart-disease-in-labour/
- also see NICE guideline: https://www.nice.org.uk/guidance/ng121/chapter/Recommendations#heart-disease
Misoprostol is OK
Carboprost (PGF analogues) increases pulmonary vascular resistance therefore not suitable
- not recommended in significant cardiac disease
Avoid ergometrine in HTN as causes vasoconstriction, exam answer says it is OK if context of cardiomyopathy
Risk of cardiac disease in a patient aged 35 who undergoes surgical castration (BSO) compared to a normal woman of the same age
a) < control
b) equal to control
c) x2 control
d) x3 control
e) x4 control
c) x2 control
Doubles cardiovascular risk
39 yo woman had elective repeat GA LSCS and developed pleuritic chest pain and tachypnoea 3 days postop. WCC 11.000, CXR showed R lower lobe atelectasis. ABG showed pO2 65mmHg. Next most appropriate step:
A - pulmonary angiogram
B - ventilation perfusion lung scan
C - chest physio and deep breathing exercises
D - IV antibiotics
E - Pulmonary CT scan
B - ventilation perfusion lung scan
College of radiologists suggests VQ first line for PE postpartum
37yo African-American multi 5 weeks following LUSCS for FTP with PET and postpartum endometritis. 4/7 history of progressive fatigue, SOB and orthopnoea. O/E pulmonary rales, third heart sound audible, tender liver, pretibial oedema. Afebrile, BP increase, tachypnoeic, tachycardic. ECG shows sinus tachycardia, CXR shows cardiomegaly. The most likely diagnosis is:
A - mitral stenosis
B - peripartum cardiomyopathy
C - pericarditis
D - pulmonary HTN
E - bacterial endocarditis
B - peripartum cardiomyopathy
O
Mother has anti Ro detected. What is the risk of congenital complete heart block in the fetus?
a - <5%
b - 10%
c - 20%
d- 30%
e - 40%
a - <5%
Regarding Bell’s Palsy:
a - it is caused by compression of the facial nerve in the pterygopallatine fossa
b - it responds to NSAID’s
c - it causes a sensory nerve deficit
d - it is most common in late pregnancy
d - it is most common in late pregnancy
Most cases in the 3rd trimester and 1st post-partum week
Which is the most incorrect statement regarding the management of ITP?
a - LUSCS is of no benefit to fetus with known severe thrombocytopaenia
b - fetal risk increases if the mother has a past history of splenectomy
c - fetal scalp sampling shouldn’t be used because of the risk of bleeding
d - maternal steroids should be given if the platelet count drops below 100
e - fetal risk can be determined by maternal antibody titre
e - fetal risk can be determined by maternal antibody titre
Diagnosis of exclusion, we don’t do antibody titre
Which of the following is most normal in a normal pregnancy?
A - MCV 105
B - WCC 12
C - Platelets 100,000
D - Reticulocytes 15%
B - WCC 12
Which of the following features is helpful in distinguishing HELLP syndrome from TTP?
A - TTP requires immediate delivery of fetus
B - DIC occurs more commonly with HELLP than TTP
C - Liver dysfunction is more common with TTP
B - DIC occurs more commonly with HELLP than TTP
Alloimmune thrombocytopenia, management, correct option:
a - IV immunoglobulin
b - Plasmapheresis
c - Prednisolone
d - Betamethasone
e - Fetal platelet transfusion
a - IV immunoglobulin (IVIGs)
TTP and HELLP, incorrect option
A - TTP more correlated with DIC
B - HELLP more associated with neurological abnormality
C- HELLP more associated with haemolysis
A - TTP more correlated with DIC
ITP, correct option:
a - caesarean section is not helpful in known severe fetal thrombocytopenia
b - FBS should not be attempted due to risk of bleeding from puncture site
c - Splenectomy decreases the likelihood of correlation between maternal and fetal platelet counts
d - Maternal antiplatelet ab levels correlate with incidence of neonatal platelet levels
b - FBS should not be attempted due to risk of bleeding from puncture site
*CHECK
Similar question from M implies C would be correct.
Mainstay of treatment for TTP
a - steroids
b - plasmapheresis
c - Ig infusion
b - plasmapheresis
TTP results from defective ADAMST13 enzyme. Test for the same confirms.
Reduction of ADAMTS13 enzyme - poor cleavage of von willebrand factor - hyperactive so higher plt aggregation to endothelial surfaces. Microthrombi in capillaries and arterioles. Diffuse endothelial insult.
Aggressive treatment with FFP and plasmapheresis removes and replaces defective ADAMST13 with effective enzyme to limits vascular injury and improve prognosis. Corticosteroids may be of benefit. Delivery does not affect course of TTP
M
32 yo G4P3 with 3 previous uneventful pregnancies and deliveries arrives in labour at term and if found to have platelet count of 85. Otherwise NAD. Most acceptable management is:
a- normal delivery and neonatal platelet count
b- notification of blood bank to have platelet packs available for maternal transfusion
c- LUSCS rather than mid-cavity forceps to minimise fetal trauma
d- Fetal platelet count (by scalp sampling)
a- normal delivery and neonatal platelet count
O
Mainstay of treatment of neonatal alloimmune thrombocytopaenia is:
a - steroids
b - intrauterine platelet transfusion
c - maternal immunoglobulin
c - maternal immunoglobulin (IVIGs)
In comparing HELLP to TTP, which is not true?
a. liver dysfunction is more common with HELLP
b. DIC is more common with HELLP
c. Delivery of fetus in not mandatory with HELLP
c. Delivery of fetus in not mandatory with HELLP
PG at 32/40 with BP 130/90, headache and epigastric pain. VE cervix long and closed. LFT’s reveal elevation of ALT?? And plt count of 70 000. MX?
a. observe
b. IOL
c. Platelet transfusion
d. LUSCS
d. LUSCS
MG presents unbooked in early labour. Platelet count is incidentally noted to be 90, 000. Management?
a. allow to labour and anticipate vaginal delivery
b. LUSCS
c. Assess fetal platelet count (scalp or cordocentesis)
d. Plasmapheresis
a. allow to labour and anticipate vaginal delivery
A MG presents unbooked at 38 weeks with a Hb of 6.8. If untreated the most likely cord Hb is
a - 10
b - 14
c - 16
d - 20
c - 16
No correlation between maternal anaemia and fetal Hb
Normal 14-22
What compound is at the greatest concentration in blood in physiological conditions?
a- carbon dioxide
b - bicarbonate
c - carbonic acid
d - all are at equal concentrations
b - bicarbonate
Carbon dioxide and carbonic acid are in equilibrium in the blood
Bicarbonate ions and carbonic acid are present in the blood in a 20:1 ratio if the blood pH is within the normal range
Which congenital coagulation disorder improves in pregnancy?
a - anti-thrombin 3 deficiency
b - vWB disease
c - protein C deficiency
d - protein S deficiency
e - haemophilia
b - vWB disease
vWF and FVIII both increase in pregnancy
A patient has an FBE with HB 10.4, MCV 70 and MCHC 28 (30-36). Which is true?
a - her film will show microcytosis
b - she should have a trial of folate
c - she will have target cells on film
d - reticulocyte count will be 10%
a - her film will show microcytosis