Radiant warmer power and body size as determinants of insensible water loss in the critically ill neonate.

Abstract:

:Twelve critically ill neonates mechanically ventilated for respiratory failure (mean weight 1.33 kg, mean gestation 31 wk) were studied to quantitate the effects of radiant power from a radiant warming device, body weight, and body surface area on insensible water loss. Radiant power density (Mw/cm2) was measured using a wattmeter and thermopile transducer. Insensible water loss was measured using a Potter Baby Scale. Weight correlated inversely with insensible water loss, (r = -0.86, P less than 0.001). Radiant power density correlated inversely to weight, (r = -0.71, P less than 0.001). There was a significant increase in insensible water loss as radiant power density increased, (r = 0.54, P less than 0.05). Net radiant power received (W/kg) by infants over their exposed surface area, correlated directly to insensible water loss, (r = 0.67, P less than 0.01) irrespective of body weight. Critically ill neonates ventilated for respiratory failure and nursed under radiant warmers incurred greater insensible water losses than previously reported for well infants. The magnitude of this increased insensible water loss is inversely related to body size and is determined directly by the radiant power density required to maintain body temperature.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Baumgart S,Engle WD,Fox WW,Polin RA

doi

10.1203/00006450-198112000-00008

subject

Has Abstract

pub_date

1981-12-01 00:00:00

pages

1495-9

issue

12

eissn

0031-3998

issn

1530-0447

journal_volume

15

pub_type

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