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: Forensic Medicine
In assessing infant deaths, Ploucquet's test involves: 
Select and explain. 
A. Change in specific gravity of lungs, B. Presence of air in stomach and duodenum, C. Change in paial weight of lungs, D. Air in middle ear
C: Change in paial weight of lungs
Answer: C: Change in paial weight of lungs 
Explanation: Ans: C. Change in paial weight of lungs(Ref: Reddy 34/e p411, 33/e p439).In assessing infant deaths, Ploucquet's test involves change in paial weight of lungs.Ploucquet's test:The blood flow in the lung beds is so increased after breathing that their weight is almost doubled from 1/70 of the body weight before respiration to 1/35 after respiration.This increase in weight is not constant and is not a reliable indication of breathing.