Gynaecology & Obstetrics Complication of 3rd Stage of Labour 453077bb Most common cause of postpartum hemorrhage is: A Uterine atony B Retained products C Trauma D Bleeding disorders High-Yield Explanation Ans. is a, i.e. Uterine atonyRef Dutta Obs. 7/e, p 410Most common cause of PPH or primary PPH is Atonic uterusMost common cause of secondary PPH is retained placenta