Department of Dental Anesthesiology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
Department of Dental Anesthesiology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan.
Clin Oral Investig. 2019 Jan;23(1):493-495. doi: 10.1007/s00784-018-2774-6. Epub 2018 Dec 12.
The selection of an appropriate size of tracheal tube is important for airway management. For nasotracheal intubation, passing the nasal cavity should be taken into account for the selection of tube size. The aim of this study was to investigate the selection of appropriate size of nasotracheal tube in pediatric patients retrospectively.
The 1-12-year patients underwent dental procedures under general anesthesia intubated nasotracheally. The correlation between height, age, weight, the tracheal diameters at C6, C7, Th2 on the chest X-ray, and actually performed tube sizes were calculated. In addition, we compared the relationships between the predicted tube size and actually the intubated tube size.
The tube sizes intubated actually were between 4.0 and 6.0-mm ID. The formula by height could be most suitable for tube size. The correspondence rates for the tube with 4.5- and 5.0-mm ID were 78% and 53%. When they were predicted as 5.5- or 6.0-mm ID, 0.5 mm smaller size tube were intubated actually; 56% and 70%. When the predicted tube size was 4.0-mm ID, 0.5 mm larger size tube was intubated actually; 66%.
The formula by height could be most suitable for the selection of size for pediatric nasotracheal intubation. When the predicted tube size was 5.5 or 6.0-mm ID, 0.5 mm smaller size should be chosen at first. In the case of 4.0-mm ID, 0.5 mm larger size should be chosen for first trial.
The present data indicate that the selection of nasotracheal tube using the formula by height might be useful.
选择合适大小的气管导管对于气道管理非常重要。对于经鼻插管，在选择管型时应考虑鼻腔通过情况。本研究旨在回顾性调查小儿经鼻插管时合适的气管导管选择。
全麻下进行口腔治疗的 1-12 岁患者行经鼻插管。计算身高、年龄、体重与 X 线胸片 C6、C7、Th2 处气管直径的相关性，以及实际使用的管型。此外，我们比较了预测管型与实际插入管型之间的关系。
实际插入的管型尺寸在 4.0 至 6.0-mm ID 之间。根据身高的公式最适合管型。4.5-和 5.0-mm ID 管的符合率分别为 78%和 53%。当预测为 5.5-或 6.0-mm ID 时，实际插入的管型小 0.5mm；分别为 56%和 70%。当预测管型为 4.0-mm ID 时，实际插入的管型大 0.5mm；分别为 66%。
根据身高的公式最适合小儿经鼻插管的管型选择。当预测管型为 5.5 或 6.0-mm ID 时，应首先选择小 0.5mm 的管型。对于 4.0-mm ID，应首先选择大 0.5mm 的管型进行初步尝试。
本研究数据表明，使用身高公式选择经鼻气管导管可能是有用的。
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