患者 男性,19岁,因活动后胸闷、气短10余年,加重3天入院。患者自幼体弱,剧烈运动时胸闷气短。近1个月,因活动量加大症状加重,伴头晕、心悸。3天前做双杠运动时,出现短暂意识丧失,约3～5分钟,伴四肢颤抖,无抽搐。清醒后记忆力减退。驻地医院给予对症治 Male patient, 19 years old, because of activity chest tightness, shortness of breath more than 10 years, increased 3 days admission. The patient was infirm, chest tightness and shortness of breath during vigorous exercise. Nearly a month, due to increased activity increased symptoms, with dizziness, palpitations. 3 days ago to do parallel bars exercise, a brief loss of consciousness, about 3 to 5 minutes, with trembling limbs, no convulsions. After awake memory loss. Resident hospital to give symptomatic treatment