抄録
As it was presumed that the gaseous metabolism of infant during sleep is different from that of child or adult in view of the fact that the cerebrum of infant or child is not fully developed and that intrauterine life is still remaining in its tissue and functions, the author determined the gaseous metabolism of infant and child during sleep in an attempt to obtain data for the clarification of this point. Roughly the following results were thus obtained.
1. The pattern of the hourly fluctuation of the oxygen consumption of infant during sleep was found almost identical qualitatively to that of child or adult. However, the fluctuating quantity of the former was found much larger compared with that of the latter.
2. The average decrement of the gaseous metabolism of infant during sleep in the night was 19 % against that in the waking state and 14% against the basal metabolism, showing almost no difference from that of child, but larger than that of adult by approximately 9%.
3. The maximumal decrement of the gaseous metabolism of infant during sleep in the night was 32% in average against the gaseous metabolism in the waking state, which was larger than that of child by 6 % and larger than that of adult by 13%.
4. The decrement of the gaseous metabolism of infant during sleep in the night was found larger than that in day time by approximately 8% in average and by 16% in the maximum.
5. The deapth index of sleep of infant and child during sleep in the night were 20.0 for infant and 17.8 for child, and quantitative index of sleep were 9.6 for infant and 8.2 for child.
