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OBG · Complications of pregnancy: cardiac disease
Sample itemA woman with moderate rheumatic mitral stenosis is stable throughout pregnancy. When is she at greatest risk of pulmonary oedema?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Immediately after delivery
After delivery, autotransfusion from the contracting uterus and relief of caval compression increase venous return suddenly. Women with stenotic lesions then decompensate, so they are monitored closely in the first postpartum days.
Option by option
A. Several weeks after postpartum discharge
The risk is greatest in the first days, not several weeks later.
B. During the second stage only
The second stage is stressful but the rise in venous return comes after the birth.
C. In the first trimester
Cardiac output rises gradually in early pregnancy and is generally tolerated.
D. Immediately after delivery (correct)
Correct. The postpartum shift of blood volume is the highest-risk time.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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