Abstract
Objective
To determine changes in body temperature (BT) of hyperbilirubinemic newborns under conventional phototherapy with fluorescent lamps and light emitting diodes (LED) at different irradiances.
Methods
Otherwise healthy newborn infants >34 wk gestational age (GA) hospitalized for indirect hyperbilirubinemia, requiring phototherapy in the first 10 d of life were enroled. Infants who received conventional phototherapy with fluorescent lamps (10–15 μW/cm2/nm irradiance) were defined as group 1, LED phototherapy of 26–60 μW/cm2/nm irradiance as group 2, and LED phototherapy of 60–120 μW/cm2/nm irradiance as group 3. Primary outcome measure was mean BT which was defined as arithmetical mean of axillary BT measured at 2 h intervals during the first day of phototherapy.
Results
Thirty patients were enroled in each group. Mean birth weight and GA of the total cohort was 2800 ± 530 g and 36.6 ± 2 wk, respectively. Baseline demographic variables and serum total bilirubin levels were similar among groups. Mean BT was 36.7 ± 0.1 °C in group 1, 36.6 ± 0.2 °C in group 2, 37.7 ± 0.2 °C in group 3. Mean BT was higher in group 3 compared to group 1 (p < 0.001) and group 2 (p < 0.001). Group 1 and group 2 had similar mean BT measurements (p = 0.09). During phototherapy all the patients in group 3 had at least one BT measurement ≥37.5 °C and 77 % had BT ≥38 °C. Only one patient in group 2 had BT ≥ 37.5 °C which was also ≥38 °C. During phototherapy all BT measurements were <37.5 °C in group 1.
Conclusions
LED phototherapy of ≥60 μW/cm2/nm intensity significantly increases BT in hyperbilirubinemic newborns.
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Contributions
OA: Planning of the study, interpretation of the data, statistical analysis and manuscript writing; ES: Planning of the study, collection of the data; YK: Collection of the data, interpretation of the data; SK: Collection of the data; AYB: Planning of the study; ND: Planning of the study, manuscript writing.
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Aydemir, O., Soysaldı, E., Kale, Y. et al. Body Temperature Changes of Newborns Under Fluorescent Versus LED Phototherapy. Indian J Pediatr 81, 751–754 (2014). https://doi.org/10.1007/s12098-013-1209-2
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DOI: https://doi.org/10.1007/s12098-013-1209-2