国际麻醉学与复苏杂志   2014, Issue (5): 6-6
    
急性呼吸窘迫综合征机械通气策略进展
李双玲, 王东信1()
1.北京大学第一医院麻醉与重症医学科
The progress of mechanical ventilation strategy for acute respiratory distress syndrome
 全文:
摘要:

背景 急性呼吸窘迫综合征(acute respiratory distress syndrome, ARDS)在重症监护病房的发生率为7%~10%,死亡率约36%~44%。ARDS的机械通气治疗仍然是治疗的研究热点。 目的 旨在综述ARDS近年的机械通气策略进展。 内容 肺保护性通气策略包括小潮气量(4 ml/kg~7 ml/kg理想体重)、控制气道平台压<28 cmH2O~32 cmH2O(1 cmH2O=0.098 kPa)、允许性高碳酸血症和最佳呼气末正压的设定。氧合法、肺的力学指标和影像学研究都为临床医师选择适宜的最佳呼气末正压提供了参考。肺复张是肺保护性通气中肺开放策略的必要补充,对于顽固性低氧血症患者,可考虑严密监测下使用,但首先要对患者肺的可复张性进行判断。肺复张的效果受病因及病程早晚等因素的影响。与仰卧位比较,俯卧位通气能降低重症ARDS 患者的病死率,建议用于常规机械通气治疗无效的重度ARDS 患者。肺影像学、ARDS病程及低氧血症的严重程度等可帮助预测ARDS 患者对俯卧位通气的反应。 趋向 体外膜肺氧合今后可能成为重症ARDS(对常规治疗无效)患者呼吸支持的一线选择。

关键词: 急性呼吸窘迫综合征; 治疗; 机械通气
Abstract:

Background In the ICU setting, the incidence of acute respiratory distress syndrome(ARDS) is 7%-10%.Reported mortality rate is still high,ranged from 36%-44%. Ventilation strategies for ARDS is the prime focus in management. Objective This review emphasizes progress of mechanical ventilation strategy for ARDS. Content Lung protective ventilation strategies for ARDS includs low tidal volums(4 ml/kg-7 ml/kg),low plateau pressures[<28 cmH2O-32 cmH2O(1 cmH2O=0.098 kPa)], permissive hypercapnia and the optimal level of positive end expiratory pressure. Oxygenation,pulmonary mechanical characteristics and study of lung imaging can help clinicians titrate positive end expiratory pressure better, although the optimal level of positive end expiratory pressure when ventilating patients with ARDS remains unclear. Lung recruitment maneuver is a necessary complement to open lung strategy of lung protective ventilation methods for ARDS patients with refractory hypoxemia, but the pulmonary recruitability must be assessed. The effect of lung recruitment maneuver influenced by etiology and the course of ARDS. Recent study support the existence of a survival benefit with prone positioning ventilation in severely hypoxemia ARDS patients. The pulmonary imaging, the course of ARDS and the severity hypoxemia can help predict the reaction to prone positioning ventilation. Trend In the future, extracorporealmembrane oxygenation may be the first-line choice for respiratory support to severe patients with ARDS who are unsuitable for conventional therapy.

Key words: Acute respiratory distress syndrome; Therapy; Mechanical ventilation