Monitoring radiant power in the critically ill newborn under a radiant warmer.

S. Baumgart*, W. D. Engle, C. B. Langman, W. W. Fox, R. A. Polin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


To evaluate radiant power received by infants under radiant warmers, 11 neonates (mean gestational age 32.2 weeks, mean weight 1.50 kg) were monitored. A wattmeter was used to evaluate warmer power (watts), and a thermopile placed at bed level was used to correlate warmer power to radiant power density received (mw/cm2). Warmer power ranged from 133-301 watts. A linear relationship existed between warmer power and radiant power density received (r = 0.97, p < 0.001). After establishing that radiant power delivery could be monitored with a wattmeter, this technique was used to quantitate radiant power in a small series of infants with and without a plastic shield. Radiant power density received decreased in all infants when shielded (mean 14.6-11.2 mw/cm2, p < 0.01). This study demonstrates: (1) radiant warmer power can be monitored with a wattmeter; (2) warmer power correlates to radiant power density received; and (3) radiant power monitoring can be used to evaluate radiant power demands in specific clinical situations.

Original languageEnglish (US)
Pages (from-to)721-724
Number of pages4
JournalCritical care medicine
Issue number12
StatePublished - Dec 1980

ASJC Scopus subject areas

  • Critical Care and Intensive Care Medicine


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