McGrath-5型视频喉镜与McCoy喉镜引导困难气道双腔支气管插管的效果比较*

目的探讨Mc Grath-5型视频喉镜与Mc Coy喉镜在困难气道双腔支气管插管的临床应用效果。方法选择预计双腔支气管插管困难的择期手术患者60例,采用随机数字表法,将其随机分为两组:Mc Grath-5型视频喉镜组(A组,n=30)和Mc Coy喉镜组(B组,n=30)。常规诱导后分别用两种喉镜引导经口插管,对两组患者一次插管成功率、插管时间、定位成功率、插管时间内脉搏血氧饱和度(Sp O2)90%次数、环状软骨按压例数、插管并发症发生情况和血流动力学指标:诱导前(T0)、置入喉镜暴露声门时(T1)、导管进入声门即刻(T2)、插管后3 min(T3)各时间点记录患者收缩压(SBP)、心率(HR)和脑电双频指数(BIS)值的变化进行分析。结果 A组患者环状软骨按压例数明显低于B组(P0.05),插管时间明显高于B组(P0.05);两组患者T3时点的SBP和HR较T0时点均明显降低(P0.05),A组患者T1、T2时点SBP和HR均明显低于B组(P0.05)。结论与Mc Coy喉镜相比,Mc Grath-5型视频喉镜引导经口双腔导管插管对血流动力学的影响较小,插管并发症较少,插管时间虽延长但不至于影响患者氧供,为临床解决困难气道双腔插管提供一种良好选择。

Comparison of McGrath-5 video-laryngoscope and McCoy laryngoscope guided double-lumen tube intubation in patients with difficult airway*

Objective?To compare the clinical efficacy of double-lumen tube intubation between McGrath-5 video-laryngoscope and McCoy laryngoscope in patients with difficult airway. Methods Sixty patients who were predicted as difficult double-lumen tube intubation were divided into two groups using random number table method: McGrath-5 video-laryngoscope group (group A, n = 30) and McCoy laryngoscope group (group B, n = 30). All patients were intubated by two laryngoscopes correspondingly after conventional induction. The success rate of the first intubation, intubation time, the ratio of right positioning, the number of SpO2 < 90% within intubation time, the number of pressing the cricoid, the incidence of intubation complications and hemodynamic parameters The changes in systolic pressure and heart rate and BIS were recorded before induction (T0), glottic exposure upon laryngoscope insertion (T1), immediately after intubation (T2), 3 min (T3) after intubation]. Results The number of pressing the cricoid was smaller in group A than in group B (P < 0.05), whereas the intubation time in group A was significantly higher than that in group B (P < 0.05). The systolic pressure and heart rate at T3 were dramatically reduced compared with those measured at T0 in both groups (P < 0.05). The systolic pressure and heart rate at T1 and T2 in group A were considerably lower in group A than those in group B (P < 0.05). Conclusions Compared with the McCoy laryngoscope, double-lumen tube intubation by McGrath-5 video-laryngoscope can less impact on hemodynamics, less intubation complications, intubation time although prolonged but not for influence the patient''s oxygen supply, for difficult airway double-lumen tube intubation provides a good choice.