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OBG · Labour complications
Sample itemAfter delivery of the fetal head in a diabetic mother, the head retracts against the perineum (turtle sign) and the anterior shoulder fails to deliver with routine traction. What is the first manoeuvre?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. McRoberts position with suprapubic pressure
Shoulder dystocia is impaction of the anterior shoulder behind the pubic symphysis. McRoberts manoeuvre (hyperflexion of the thighs onto the abdomen) straightens the sacrum and rotates the pelvis, with suprapubic pressure to dislodge the shoulder. Fundal pressure is avoided because it worsens impaction.
Option by option
A. Fundal pressure
Fundal pressure drives the shoulder further against the symphysis and is contraindicated.
B. McRoberts position with suprapubic pressure (correct)
Correct. McRoberts with suprapubic pressure resolves most cases.
C. Forceps rotation
Forceps cannot free an impacted shoulder and risk fetal injury.
D. Attempt Zavanelli manoeuvre (cephalic replacement) as the first step
Cephalic replacement is a last-resort rescue after other manoeuvres have failed, not the first step.
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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