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对１９０例食道癌手术病人进行麻醉分组对比观察。结果发现，６０岁以上老年组合并症发生率远高于成年组，分别为４２％和１８％，且多为心血管及肺部疾病。老年合并症组在插管时ＭＡＰ升高，无合并症组及成年组皆平稳或略有降低；改变体位后绝大多数病例ＭＡＰ下降，ＭＡＰ降至８ｋＰａ以下者，合并症组高于无合并症组：Ａ组２３．７％，Ｂ组８％，Ｃ组１７％，Ｄ组８．５％。中上段食道癌切除术，术中ＭＡＰ明显低于食道下段癌切除术。因此老年人尤以患各种合并症者应是该类麻醉的高危人群。
Anesthesia group of 190 patients with esophageal cancer were compared and observed. The results showed that the incidence of combined comorbidities was significantly higher in the elderly over the age of 60 than in the adult group, which was 42% and 18%, respectively, and most of them were cardiovascular and pulmonary diseases. In elderly patients with comorbidities, MAP increased during intubation, and there was a steady decrease or a slight decrease in patients without comorbidities and adulthood. MAP decreased in most cases, and MAP decreased to less than 8kPa in comorbidities. Disease group: 23.7% in group A, 8% in group B, 17% in group C, and 8.5% in group D. In the upper esophageal cancer resection, the intraoperative MAP was significantly lower than the lower esophageal cancer resection. Therefore, the elderly, especially those suffering from various complications should be the high-risk groups of this kind of anesthesia.