呼气末正压的临床应用

呼气末正压是指在机械通气时,人为的使呼气末气道及肺泡内压力高于大气压.临床常用于治疗急性呼吸窘迫综合征、慢性阻塞性肺疾病、急性左心衰竭等,通过设置不同水平的呼气末正压,减轻肺渗出,改善氧合;改善患者与呼吸机的协调性以降低呼吸功;固定胸壁等.但针对不同疾病呼气末正压的作用机制有所不同,本文将逐一介绍.

Clinical application of positive end-expiratory pressure

Positive end-expiratory pressure is a kind of mechanical ventilation mode that the Dressure of airway and alveolus is higher than atmospheric pressure.It is usually treated for acute respiratory distress syndrome,chronic obstructive pulmonary disease,acute heart failure and so on.The main target is to reduce pulmonary exudation,increase oxygenation;improve the coordination between the patient and ventilator to decrease work of breathing;fix thoracic wall and the like.But their mechanism are different,this article will introduce one by one.