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30余年前,Mendelson报导了产妇全麻时胃内容误吸入肺引起的综合症。66例除5例吸入固形物引致急性大范围呼吸道梗阻外,40余例临床表现发钳、呼吸困难、喘鸣和缺氧等的综合症。用动物实验向肺内缓慢灌输pH低于2.5的澄清酸性液体或滤过的胃液均已证实。当误吸物的pH大于2.5时其生理和形态学反应轻微且短暂,如pH为1.5或更低时反应均严重,死亡率也高。连想到约50%产妇胃液的pH低于2.5,故应予研究。人吸入多少毫
More than 30 years ago, Mendelson reported the syndrome caused by the wrong inhalation of stomach contents during general anesthesia. In addition to the five cases of 66 cases of inhaled solids caused by acute large-scale airway obstruction, more than 40 cases of clinical manifestations of clamp, dyspnea, wheezing and hypoxia and other syndromes. In animal experiments, slowly instilled into the lungs either clear acidic liquids with pH below 2.5 or filtered gastric fluid were confirmed. Physiological and morphological responses are mild and transient when the pH of the aspirate is greater than 2.5, with severe reactions and high mortality at pH 1.5 or lower. Even think about 50% of maternal gastric juice pH below 2.5, it should be studied. How many people breathe