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
Maximum cardiac output during pregnancy is seen at : 
Select and explain. 
A. 20 weeks, B. 30 weeks, C. 34 weeks, D. 36 weeks
C: 34 weeks
Answer: C: 34 weeks 
Explanation: The cardiac output stas to increase from 5th week of pregnancy It reaches peak 40-50% at about 30-34 weeks Thereafter it remains static till term. Ref: Dutta Obs 9e pg 48.