The study to predict the appropriate endotracheal tube size in pediatric anesthesia.

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  • 小児における適正気管内チューブサイズの検討

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The purpose of this study was to achieve a formula to predict the most appropriate endotracheal tube size for infants and children by using statistic analysis of a thousand cases.<br>Endotracheal tube size was most correlated with age where the correlation coefficient was 0.8859. The correlation coefficient between endotracheal tube size and combined three factors age, height, and weight was highest in combination of triplicates, then higher in the combination of duplicates of the age and height.<br>The values were 0.935 and 0.9299 respectively. The predicted tube sizes which were given by the regression formula between tube sizes and age were larger than the actually used tube sizes under the twentieth french number. The predicted tube sizes which were given by the regression formula between tube sizes and combined three factors age, height, and weight were larger than the actually used tube sizes over the thirtieth french number.

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