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
Carboprost, used for 2' trimester aboion, is analogue of ? 
Select and explain. 
A. PGE2, B. PGF2a, C. PGI2, D. PGD2
B: PGF2a
Answer: B: PGF2a 
Explanation: Ans. is 'b' i.e., PGF2aCarboprost is a synthetic prostaglandin analogue of PGF2a (specifically, it is 15-methyl-PGF2a) with oxytocic propeies.Carboprost induces contractions and can trigger aboion in early pregnancy. It also reduces postpaum bleeding.