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对３０例慢性呼吸衰竭的肺心病患者、２０例肺炎患者及３０例正常人同时进行脑干听觉、体感诱发电位检查。结果：肺心病组两种诱发电位异常率分别为８０％和８３％；肺炎组为２０％和２０％，经统计学检验，肺心病组较肺炎组有显著性差异（Ｐ＜０．０１）。认为诱发电位可作为慢性呼吸衰竭的肺心病患者脑功能障碍的敏感电生理指标，对肺性脑病的早期诊断有较大价值。
Thirty patients with chronic respiratory failure of pulmonary heart disease, 20 patients with pneumonia and 30 normal subjects were simultaneously brainstem auditory and somatosensory evoked potentials. Results: The abnormal rates of the two evoked potentials were 80% and 83% respectively in the group of pulmonary heart disease and 20% and 20% in the group of pneumonia. Compared with the pneumonia group, the difference was statistically significant (P <0.01) . It is considered that the evoked potential can be used as a sensitive electrophysiological indicator of brain dysfunction in patients with chronic respiratory failure and has great value in the early diagnosis of pulmonary encephalopathy.