Hwang C L, Luu K C, Wu T J, Jaing C J, Lin Y S, Luciana S, Chao C C
Department of Anesthesiology, National Taiwan University Hospital.
Ma Zui Xue Za Zhi. 1990 Mar;28(1):49-54.
Nasopharyngeal airway should be placed to reach the tongue base without contact with the epiglottis. The correct length of the nasopharyngeal airway in Chinese adults was estimated in seventy-three surgical patients under general anesthesia (30 males and 43 females, aged 18-82 yr). Measurements were performed with a soft, uncuffed, ID 6.0 mm endotracheal tube (Portex) introduced through the nasopharyngeal passage. The proper tip placement of the tube was evaluated under direct laryngoscopy. The Nostril-epiglottis distance (N-E distance) is 15.31 +/- 1.09 cm (mean +/- SD) for all cases, 16.03 +/- 1.04 cm for male cases and 14.97 +/- 0.95 cm for female cases. There are correlation between the N-E distance and the height (p less than 0.001, r = 0.41), and between the N-E distance and the N-A distance (The distance from nose tip to mandibular angle) (p less than 0.004, r = 0.324). Linear regression analysis relating the N-E distance to the height and the N-E distance to the N-A distance were also statistically significant (p less than 0.001 and p less than 0.01, respectively).
应放置鼻咽通气道，使其抵达舌根且不接触会厌。在73例全身麻醉下的外科手术患者（30例男性和43例女性，年龄18 - 82岁）中估计中国成年人鼻咽通气道的正确长度。使用一根柔软、无套囊、内径6.0 mm的气管内导管（Portex）经鼻咽通道插入进行测量。在直接喉镜检查下评估导管的正确尖端位置。所有病例的鼻孔至会厌距离（N - E距离）为15.31±1.09 cm（平均值±标准差），男性病例为16.03±1.04 cm，女性病例为14.97±0.95 cm。N - E距离与身高之间存在相关性（p < 0.001，r = 0.41），且N - E距离与鼻尖至下颌角距离（N - A距离）之间也存在相关性（p < 0.004，r = 0.324）。将N - E距离与身高以及N - E距离与N - A距离进行线性回归分析也具有统计学意义（分别为p < 0.001和p < 0.01）。
