• P H Gray, S Paterson, G Finch, and M Hayes.
• Division of Neonatology, University of Queensland, Mater Mothers' Hospital, Brisbane, Queensland, Australia. Peter_Gray@mater.org.au
• Acta Paediatr. 2004 Mar 1;93(3):350-5.

AimsTo evaluate the thermal responses and weight gain in preterm infants nursed in a cot on a heated, water-filled mattress (HWM) compared with infants receiving care in an air-heated incubator and to compare mothers' stress, anxiety levels and perceptions of their infants in the two groups.MethodsStable preterm infants weighing 1300 to 1500 g were enrolled, being randomly allocated to either the study group (n = 41) receiving care in a cot on an HWM, or the control group (n = 33) receiving incubator care. The mean daily body temperature and episodes of cold stress and hyperthermia were recorded. Weight gain (g kg(-1) body weight d(-1)) was also calculated. The mothers completed questionnaires on their perceptions of their infants, and their anxiety and stress levels before randomization, and 2-3 wk later during the trial.ResultsThe mean body temperature was similar for the first week of the trial (study group 36.9 degrees C vs controls 36.9 degrees C). There were no significant differences in the incidence of cold stress, while more hyperthermic episodes were seen in the study group (p = 0.03). There were no significant differences in weight gain during the first (study group 21.4 g vs controls 19.6 g) or second weeks of the trial (study group 20.5 g vs controls 19.2 g). Neonatal morbidity did not differ between the groups. There were no differences in mothers' perceptions of their babies, or feelings of stress or anxiety.ConclusionThere were no differences between infants cot-nursed on an HWM and those receiving incubator care, with the exception of episodes of high temperature. The results suggest that the HWM may be used safely for low-weight preterm infants.

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