<prompt> What percentage of weight loss in infants constitutes severe dehydration?10 loss of body weight6 loss of body weight5 loss of body weight7 loss of body weight  <response>: Ans: A 10 loss of body weight Ref: Nelson s Textbook of Pediatrics. 19th Edition, Chapter on Deficit Therapy. Page 245Explanation:In an older child with diarrhea, 6 loss of body weight amounts to Severe dehydration whereas 10 loss of body weight is required to cause the same in infants Ref: Nelson.CLINICAL EVALUATION OF DEHYDRATIONMild dehydration 5 in an infant: 3 in an older child or adult:Normal or increased pulseDecreased urine outputThirstyNormal physical findingsModerate dehydration 5-10 in an infant: 3- 6 in an older child or adult:TachycardiaLittle or no urine output: IrritablelethargieSunken eyes and fontanelDecreased tearsDry mucous membranesMild delay in elasticity skin turgorDelayed capillary refill 1.5 secCool and paleSevere dehydration 10 in an infant; 6 in an older child or adult:Peripheral pulses either rapid and weak or absentDecreased blood pressureNo urine outputVery sunken eyes and fontanelNo tearsParched mucous membranesDelayed elasticity poor skin turgorVery delayed capillary refill 3 seeCold and mottledLimp, depressed consciousness 