This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Causes of Obstetrical Hemorrhage, Subject name: Gynaecology & Obstetrics
Vasa previa may lead to - 
Select and explain. 
A. Rupture of membranes, B. Fetalexanguination, C. Fetal death., D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. is 'd' i.e., All of the above Vasa previao In it a leash of blood vessels happen to traverse through the membranes overlying the internal os, in front of presenting part. Rupture of membranes involving the overlying vessels leads to vaginal bleeding. As it is entirely fetal blood, this may result in fetal exanguination and even death.