咽下性肺炎(Mendelson 综合征)是术后误吸入胃液到气管内而引起的肺部强烈刺激症状。胃液对肺的损害,受其酸的强度支配。实验见:pH 1.20以下的胃酸必然会发生肺水肿,同时伴有微小的肺不张、肺出血及坏死。pH1.10以下除会发生上述变化外,能引起肺破裂,100%死亡。pH1.75以上没有死亡的。Culver 等对300例全麻病人,手术前先将依凡斯蓝(Evans blue)加进胃液里,术后用支气管镜仔细检查气管和支气管,发现有16%的病例胃液流入气管内,提示术后误吸的可能性很多。Le Frock 等在10 Swallowing pneumonia (Mendelson’s syndrome) is a strong irritation of the lungs caused by accidental inhalation of gastric juice into the trachea. Damage to the lungs by gastric juice, dominated by the strength of its acid. See the experiment: gastric acid pH below 1.20 inevitable pulmonary edema, accompanied by tiny atelectasis, pulmonary hemorrhage and necrosis. In addition to the above pH1.10, the above changes can cause lung rupture and 100% death. There is no death above pH1.75. Culver and other 300 patients with general anesthesia, before surgery Evans blue (Evans blue) added to the gastric juice, after careful bronchoscopy with tracheal and bronchial and found that 16% of cases of gastric fluid flow into the trachea, suggesting that surgery After aspiration is very likely. Le Frock et al