目的 探讨人体一些体表标志与左侧支气管恰当插管深度的相关关系,为左侧支气管插管提供参考.方法 以身高、下颌颏部下缘至胸骨下角顶端距离(颏胸距)、胸骨静脉切迹至胸骨下角顶端距离(切胸距)、左锁骨中线上锁骨中点至肋弓下缘距离(锁肋距)作为体表标志测量需要左侧支气管插管全身麻醉的脊柱或胸廓手术患者122例的身高、颏胸距、切胸距、锁肋距和支气管插管恰当深度,以支气管插管恰当深度为因变量,以身高、颏胸距、切胸距、锁肋距为自变量,分别建立男性、女性回归方程.结果 男性回归方程:男y^=7.35+0.33×锁肋距+0.07×身高,女性回归方程:女y^=11.98+0.09×身高.男性左支气管插管实测深度与预测深度比较,差异无统计学意义(P＞0.05);女性实测深度比预测深度长(P＜0.05).结论 男性左支气管插管预测深度与实测深度较接近,男性回归方程用于指导临床有一定意义;女性预测深度与实测深度差异较大,女性回归方程用于指导临床价值有限.%Objective To explore the correlations between the optimal depth of left double-lumen endobronchial tube intubation and some body landmarks,so as to provide references for left double-lumen endobronchial tube intubation. Methods Height,distances from chinmentum to top of infrasternal angle( CI ),from jugular notch to top of infrasternal angle( JI ) and from midclavicular point to costal arch on the midclavicular line( MC ) were selected as body landmark. General anaesthesia with left double-lumen endobronchial tube was performed in 122 patients undertook spinal or chest operation in the study. The patients' heights,the distances of CI,JI and MC,and the optimal depth of endobronchial tube intubation were measured. Taking the optimal depth of endobronchial tube intubation as dependent variable,and patient' height,the distances of CI,JI and MC as independent variable,regression equations for male and female were established. Results Regression equation for male, (y) = 7. 35 + 0. 33 × MC + 0. 07 × height, Regression equation for female, (y)=11.98+0.09× height. No significant difference was found in the depth of endobronchial tube intubation between the actual and predicted one in males( P > 0. 05 ), while the actual depth was significantly longer than the predicted one in females( P <0. 05 ). Conclusion The actual depth of endobronchial tube intubation is similar to the predicted one in males, but is significantly different from the predicted one in females. The regression equation for male has certain clinical guiding significance, while for female is of limited clinical significance.
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