This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
NOT a cause of post-paum hemorrhage in a retracted uterus: September 2012 
Select and explain. 
A. Vaginal tear, B. Cervical laceration, C. Retained placenta, D. Atony of uterus
D: Atony of uterus
Answer: D: Atony of uterus 
Explanation: Ans. D i.e. Atony of uterus An atonic uterus cannot compressed effectively due to imperfect contraction and retraction of the uterine musculature and bleeding continues So a retraced uterus rules out uterine atony as a cause of PPH Post paum hemorrhage MC cause of PPH: Atonic uterus (grand multipara, prolonged labor etc.) PPH is said to occur if: Blood loss is more than 500 cc Drugs used for PPH: -- Misoprostol, -- Ergometrine etc.