This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Atonic PPH is not seen in 
Select and explain. 
A. Multiple pregnancy, B. Hydramnios, C. Erythroblastosis fetalis, D. Prolonged labour
C: Erythroblastosis fetalis
Answer: C: Erythroblastosis fetalis 
Explanation: Causes of Atonic PPH: Multiparity Overdistention of abdomen Malnutrition and anemia Antepaum hemorrhage Prolonged labor Anesthesia Initiation or augmentation of delivery by oxytocin Malformation of uterus Uterine fibroid Mismanaged third stage of labor Precipitate labor Ref: Dutta Obs 9e pg 385.