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Hypothermia in newborns could directly affects longer hospital stay and may cause them serious problems or death. The objective of this prospective descriptive study was to explore incidence and associated factors with hypothermia in newborns during early admission in nursery unit. The instruments included the demographic data and the record of factors related to hypothermia which were tested for content validity by three experts and tested bedside with 10 newborn infants. The results found that the majority of 353 newborn infants were term newborns and having over 2,500 grams of birth weight. At admission period, incidence of temperature below 36.5 and 36.8 degree Celsius were 21.50% and 51.30%, respectively. At one hour after admission period, those incidence of temperature dropped to 8.80% and 37.10%, respectively. According to infant factors, the gestational age and birth weight of the newborn infants with normal temperature and those with temperature equal 36.8 degree Celsius or less were significantly statistical different (t = 2.26, p < .05 and t = 3.19, p < .05, respectively). The difference of the environmental, equipment, and nursing personnel factors with hypothermia did not reach statistical significance. Specific hypothermia prevention interventions for the newborn infants with concerning gestational age and birth weight should be designed in nursing practice.
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