<prompt> Most sensitive indicator of depletion of intravascular volume in infants is:Cardiac OutputStroke VolumeHea RateBlood Pressure  <response>: 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 