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
Which of following parameters increase by 40 percent in pregnancy 
Select and explain. 
A. Mean arterial pressure, B. Heart rate, C. Cardiac output, D. Diastolic BP
C: Cardiac output
Answer: C: Cardiac output 
Explanation: Cardiac output increase by 40% in pregnancy beginning from 5th week and maximum between 28 → 32 weeks.
70 % increase in cardiac output occurs in immediate post partum period.