女性,36岁,患风湿性心脏病二尖瓣狭窄十余年,1年来出现阵发性房颤,口服乙胺碘呋酮可转为窦性心律。半月前又因房颤发作,7天前服用乙胺碘呋酮0.2g,每天3次,3天后转为窦性心律,减为0.2g,每天2次,两天后减至每天0.2g,总量计3g。继后开始发生心悸、胸闷,曾晕厥3次,当时意识不清,伴 Female, 36 years old, suffering from rheumatic mitral stenosis more than 10 years, 1 year of paroxysmal atrial fibrillation, oral amiodarone can be converted to sinus rhythm. Half a month ago due to atrial fibrillation onset, 7 days ago, taking amiodarone 0.2g, 3 times a day, 3 days later converted to sinus rhythm, reduced to 0.2g, 2 times a day, reduced to 0.2g two days after the total Quantity 3g. Followed by palpitations, chest tightness, had fainted 3 times, then confused, with