Heating of Newborn Infants due to Blue Light-Emitting Diode Fibreoptic Phototherapy Pads.

Abstract:

BACKGROUND:Surface temperatures of fibreoptic phototherapy pads using a high intensity blue light-emitting diode (LED) light source have not been studied. OBJECTIVES:The aim of this study was to measure the temperature of LED fibreoptic phototherapy pads during phototherapy in a bench-top study, and to determine temperature effects on babies during phototherapy. METHODS:A commercially available LED fibreoptic phototherapy system was tested. In a bench-top setting, pad surface temperatures were measured before, during and after a 12-h period of phototherapy (10 different LED light box-pad combinations). A prospective, cohort study of well babies at >34 weeks' gestation receiving phototherapy was then conducted to determine changes in pad and body temperatures during a 90-min phototherapy period. RESULTS:In the bench-top study, the mean (95% CI) pad temperature was 21.8°C (21.5-22.1) before lights, 27.0°C (26.5-27.5) after 12 h of lights, and 22.1°C (21.9-22.4) 8 h after turning off the lights (F = 366.1, p < 0.0005). The magnitude of change in pad temperature with phototherapy was linearly correlated with irradiance (r = 0.89, p < 0.0005). The pad plastic covering absorbed 13% of blue light from fibres. In the clinical study, the warmest pad temperature during phototherapy was 38.9°C. Axillary temperature increased by a mean (95% CI) of 0.3°C (0.1-0.5), p < 0.019, and exceeded 37.5°C in 4 babies. CONCLUSIONS:LED fibreoptic phototherapy pads are heated by high-intensity blue light. The thermal environment and temperature of babies should be monitored closely during LED fibreoptic phototherapy. A temperature probe placed between the skin and the pad will not accurately reflect the core temperature during fibreoptic phototherapy.

journal_name

Neonatology

journal_title

Neonatology

authors

Ng PL,Carlisle T,Ly M,Morris SA

doi

10.1159/000464318

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

103-109

issue

2

eissn

1661-7800

issn

1661-7819

pii

000464318

journal_volume

112

pub_type

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