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
Puerperium is the period 
Select and explain. 
A. 6wks following delivery, B. 3wks following delivery, C. 2wks following delivery, D. 1wk following delivery
A: 6wks following delivery
Answer: A: 6wks following delivery 
Explanation: Purperium begins as soon as the placenta is expelled and lasts for approximately 6wks when the uterus becomes regressed almost to the nonpregnant size.