A patient with massive PPH unresponsive to oxytocin, ergometrine, and carboprost undergoes B-Lynch suture. The suture compresses the uterus by which mechanism?
- A Ligating the uterine arteries bilaterally
- B Applying brace compression to the anterior and posterior uterine walls ✓
- C Obliterating the uterine cavity with interrupted sutures
- D Compressing the internal iliac arteries
Correct answer: B. Applying brace compression to the anterior and posterior uterine walls
Explanation
The B-Lynch suture is a brace suture technique that compresses the anterior and posterior walls of the uterus together, reducing blood flow in the venous sinusoids of the myometrium. It does not ligate arteries or obliterate the cavity. It is a uterine-conserving procedure used for atonic PPH unresponsive to medical therapy.
Reference: Williams Obstetrics, 26th ed.
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Written and medically reviewed by the StethoPrep medical team.