胸科手术中单肺通气期间不同通气方式的比较

目的 观察胸科手术病人麻醉中单肺通气（ＯＬＶ）期间不同通气方式的效果。方法 １０例择期胸科手术成年病人，ＡＳＡⅠ～Ⅱ级，在ＯＬＶ期间首先采用全潮气量（１０ｍｌ／ｋｇ）不加ＰＥＥＰ，随后采用半潮气量（５ｍｌ／ｋｇ）同时施加７ｃｍＨ２Ｏ ＰＥＥＰ两种通气方式，保持每分通气量不变。在开胸后ＯＬＶ前，ＯＬＶ时采用敏种通气方式后３０ｍｉｎ，以及恢复双肺通气（ＴＬＶ）后３０ｍｉｎ分别进行血气分析，同时监测气道

Comparison of the efficacies of different ventilatory pattern during one-lung ventilation

Objective To evaluate the efficacies of different ventilatory pattern during one lung ventilation (OLV). Methods During OLV, all patients underwent two different ventilatory pattern, total volume (10ml/kg) without PEEP and half tidal volume (5ml/kg) with PEEP of 7cmH 2O. The arterial blood samples were collected for blood gases analysis immediately before one lung ventilation, 30min following two different OLV pattern and 30 min after resuming two lung ventilation. The airway pressure and hemodynamic parameters were monitored simutaneously. Results PaO 2 and PaCO 2 were higher during half tidal volume than during total tidal volume(P<0 01), but during half tidal vomume, PaCO 2 increased within the clinically accepted range, and peak airway pressure decreased (P<0 05).MAP,HR and CVP had no significant changes. Conclusions During one lung ventilation, half tidal volume pattern with PEEP of 7cmH 2O may be applied to improving the arterial oxygenation.