Prone sleeping infants have a reduced ability to lose heat

被引:38
作者
Tuffnell, CS [1 ]
Petersen, SA [1 ]
Wailoo, MP [1 ]
机构
[1] LEICESTER ROYAL INFIRM,SCH MED,DEPT CHILD HLTH,LEICESTER LE2 7LX,LEICS,ENGLAND
关键词
sudden infant death syndrome (SIDS); sleeping position; body temperature; mathematical model;
D O I
10.1016/0378-3782(95)01659-7
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
The heat loss coefficients of a group of infants have been calculated and compared to see if there is a difference in the ability to lose heat between prone and non-prone sleeping infants. For a group of 43 infants aged 4-29 weeks, a simple mathematical model of exponential cooling in a body has been fitted to the fall in rectal temperature which occurs in infants at bedtime, One of the parameters yielded by the fitting process is the coefficient of thermal heat loss, After validation against the estimated heat loss from supine sleeping infants, the heat loss coefficient was compared at different sleep positions and gender. The mean heat loss coefficient, measured from the non-prone sleeping infants (0.269 W/degrees C, S.D. 0.197) agreed well with the value calculated for supine sleepers with the same tog levels (0.4 W/degrees C), Prone sleeping infants were found to have a considerably smaller heat loss coefficient which was approximately 60% of the value for non-prone sleeping infants (P = 0.000097). Female infants were found to have a heat loss coefficient that was approximately 70% of that of male infants but this gender difference was only significant (P = 0.025) for non-prone sleeping infants. These results suggest that infants sleeping in the prone position may be unable to lose heat as rapidly as those infants sleeping non-prone.
引用
收藏
页码:109 / 116
页数:8
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