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: Pediatrics
Most sensitive indicator of depletion of intravascular volume in infants is: 
Select and explain. 
A. Cardiac Output, B. Stroke Volume, C. Hea Rate, D. Blood Pressure
C: Hea Rate
Answer: C: Hea Rate 
Explanation: The most sensitive indicator of depletion of intravascular volume in infants is the hea rate. Ref: CURRENT Pediatric Diagnosis and Treatment, 18th Edition, Page 375; Practical Pediatrics, 5th Edition, Page 162