患者,男,27岁。因阵发性心悸3年,现加重伴呼吸困难1周收入心内科。患者2003年出现阵发性心悸,伴恶心,无呕吐,当时在当地做心电图示心房颤动,持续20min后自行好转,未系统诊治。平素劳累时有发作。1周前因感冒,出现咳嗽及咳痰,无发热,心悸明显加重,并出现进行性呼吸困难,不能平卧 Patient, male, 27 years old. Due to paroxysmal palpitations 3 years, are now exacerbated with respiratory distress 1 week income cardiology. Patients with paroxysmal palpitations in 2003, with nausea, no vomiting, electrocardiogram at that time showed atrial fibrillation, sustained self-improvement after 20min, no systematic diagnosis and treatment. Usually tired when there is an attack. 1 week ago due to a cold, cough and expectoration, no fever, palpitations significantly increased, and progressive dyspnea, can not lie