Rebreathing expired gases from bedding: a cause of cot death?
Autor: | D P G Bolton, C. Cresswell, Angela J. Campbell, Barry J Taylor, Barbara C. Galland |
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Rok vydání: | 1993 |
Předmět: | |
Zdroj: | Archives of Disease in Childhood. 69:187-190 |
ISSN: | 1468-2044 0003-9888 |
DOI: | 10.1136/adc.69.2.187 |
Popis: | 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. |
Databáze: | OpenAIRE |
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