从床上用品中重新吸入呼出的气体：婴儿猝死的一个原因？
Rebreathing expired gases from bedding: a cause of cot death?
作者信息
Bolton D P, Taylor B J, Campbell A J, Galland B C, Cresswell C
机构信息
Department of Physiology, University of Otago Medical School, Dunedin, New Zealand.
出版信息
Arch Dis Child. 1993 Aug;69(2):187-90. doi: 10.1136/adc.69.2.187.
Abstract
The reported association of cot death and sleeping prone could be due to rebreathing of expired gases. A mechanical model simulating the respiratory system of an infant, exhaling warm humidified air with an end tidal carbon dioxide of 5%, has been used to investigate this. Some commonly used bedding materials caused an accumulation of carbon dioxide of 7% to over 10% with the model lying face down. This phenomenon persisted even with the head inclined at 45 degrees, but only on very soft materials, and could be a cause of cot death in a baby unresponsive to asphyxial blood gas changes. A coir fibre mattress allowed complete dispersal of exhalate as did a rubber sheet between any mattress and the covering sheet.
摘要
所报道的婴儿猝死与俯卧睡眠之间的关联可能是由于呼出气体的再吸入。一个模拟婴儿呼吸系统的机械模型已被用于对此进行研究，该模型呼出的是含有5%终末潮气二氧化碳的温暖潮湿空气。当模型俯卧时，一些常用的床上用品会导致二氧化碳积聚至7%以上，甚至超过10%。即使头部倾斜45度，这种现象仍会持续，但仅在非常柔软的材料上出现，这可能是导致对窒息性血气变化无反应的婴儿发生婴儿猝死的一个原因。椰棕纤维床垫以及任何床垫与床单之间的橡胶片都能使呼出物完全散开。
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