以急性功能性窦房结功能不全为主要表现的自发性蛛网膜下腔出血(SAH),若不警惕,极易延误诊治。自1988年以来,我们共遇到7例,报道如下。1 临床资料本文7例,男4例,女3例,年龄38～59岁。平素健康,无心脏病病史。均在体力活动或情绪激动时突然发病,以晕厥为首发症状者4例,晕厥伴阵发性抽 Acute functional subarachnoid dysfunction as the main manifestation of spontaneous subarachnoid hemorrhage (SAH), if not alert, easily delayed diagnosis and treatment. Since 1988, we have encountered a total of 7 cases, reported as follows. 1 clinical data of this article in 7 cases, 4 males and 3 females, aged 38 to 59 years. Usually healthy, no history of heart disease. Sudden onset of physical activity or emotional excitement, syncope as the first symptom in 4 cases, syncope with paroxysmal pumping