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OBG · Complications of pregnancy: indication for classical caesarean
Sample itemIn which situation is a classical (vertical upper segment) uterine incision most appropriate?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Extreme preterm breech with an undeveloped lower segment
A classical incision gives more room when the lower segment is not formed, as in extreme prematurity, or with a transverse lie with the back down or a large anterior placenta praevia. Its drawbacks are more bleeding and a higher risk of scar rupture in a later labour, so repeat delivery is by caesarean before labour.
Option by option
A. Obstructed labour with the head deep in the pelvis
With a deeply engaged head the lower segment is thin and stretched, so a low transverse incision remains the choice.
B. Elective repeat caesarean at 39 weeks
A well-formed lower segment at term is entered through a low transverse incision.
C. Extreme preterm breech with an undeveloped lower segment (correct)
Correct. An unformed lower segment with a small preterm breech is the standard indication.
D. Failed induction at term in a primigravida
At term after a failed induction the lower segment is well developed, so a low transverse incision is used.
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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