title: Body temperature changes of newborns under fluorescent versus LED phototherapy.
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 enrolled. Infants who received conventional phototherapy with fluorescent lamps (10-15 μW/cm(2)/nm irradiance) were defined as group 1, LED phototherapy of 26-60 μW/cm(2)/nm irradiance as group 2, and LED phototherapy of 60-120 μW/cm(2)/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/cm(2)/nm intensity significantly increases BT in hyperbilirubinemic newborns.
authors.affiliation: Department of Neonatology, Etlik Zübeyde Hanım Women's Health Teaching and Research Hospital, Ankara, Turkey, drozgegenc@yahoo.com.tr.
authors.forename: Ozge
authors.initials: O
authors.lastname: Aydemir
authors.forename: Emel
authors.initials: E
authors.lastname: Soysaldı
authors.forename: Yusuf
authors.initials: Y
authors.lastname: Kale
authors.forename: Sumru
authors.initials: S
authors.lastname: Kavurt
authors.forename: Ahmet Yagmur
authors.initials: AY
authors.lastname: Bas
authors.forename: Nihal
authors.initials: N
authors.lastname: Demirel
mesh_terms: D001831:Body Temperature; D005260:Female; D005453:Fluorescence; D006801:Humans; D051556:Hyperbilirubinemia, Neonatal / Q000628:therapy*; D007231:Infant, Newborn / Q000502:physiology*; D008297:Male; D010789:Phototherapy / Q000379:methods*
references.citation: Clin Infect Dis. 2000 Oct;31 Suppl 5:S178-84
references.pmid: 11113021
references.citation: Cochrane Database Syst Rev. 2011 Dec 07;(12):CD007969
references.pmid: 22161417
references.citation: J Perinatol. 2005 Jan;25(1):54-9
references.pmid: 15578034
references.citation: J Pediatr. 2000 Jun;136(6):771-4
references.pmid: 10839875
references.citation: Pediatr Res. 1982 Aug;16(8):670-4
references.pmid: 7110789
references.citation: Pediatrics. 2012 Aug;130(2):e352-7
references.pmid: 22802603
references.citation: Neonatology. 2009;95(3):262-6
references.pmid: 19005263
references.citation: Indian Pediatr. 2010 Feb;47(2):131-7
references.pmid: 19578227
references.citation: Pediatr Crit Care Med. 2005 May;6(3 Suppl):S45-9
references.pmid: 15857558
references.citation: N Engl J Med. 2008 Feb 28;358(9):920-8
references.pmid: 18305267
references.citation: Semin Perinatol. 2004 Oct;28(5):326-33
references.pmid: 15686263
references.citation: Eur J Pediatr. 1999 Nov;158(11):910-3
references.pmid: 10541947
references.citation: Pediatrics. 2004 Jul;114(1):297-316
references.pmid: 15231951
references.citation: J Perinatol. 2001 Dec;21 Suppl 1:S93-7; discussion S104-7
references.pmid: 11803426