急性肺栓塞表现晕厥者并非少见,由於其表现缺乏特异性,易于误诊。本文报告1例巨大肺栓塞病例的临床及病理资料,并加以讨论。患者,男,57岁。入院前3天出现头晕,胸闷、气促,随之意识不清,5～6分钟后自行缓解。此后同样发作两次,於1986年2月10日以晕厥待查入神经科。既往体健。查体:神志清楚,体温、脉搏、血压均正常, Acute pulmonary embolism syncope is not uncommon, because of its lack of specificity, easy to misdiagnosis. This article reports 1 case of massive pulmonary embolism cases of clinical and pathological data, and to be discussed. Patient, male, 57 years old. 3 days before admission, dizziness, chest tightness, shortness of breath, followed by unconsciousness, 5 to 6 minutes to ease themselves. After the same attack twice, on February 10, 1986 with syncope to be admitted to Neurology. Past physical health. Examination: Conscious mind, body temperature, pulse, blood pressure are normal,