患者女,63岁。因“阵发性心悸5年,加重10天”入院。患者5年前无明显诱因开始出现心悸,心率160bpm,伴有胸闷、气短,平均每月发作2次,每次持续2h左右,曾就诊于当地医院,给予维拉帕米治疗后好转。10天前,患者无明显诱因再次出现心悸,心率最快达180bpm,持续时间达6h,应用维拉帕米疗效不明显。发作频繁,平均每2天发作1次,每次持续 Female patient, 63 years old. Due to “paroxysmal palpitations 5 years, aggravating 10 days ” admission. 5 years ago, no obvious incentive to start heart palpitations, heart rate 160bpm, accompanied by chest tightness, shortness of breath, the average monthly attack 2 times, each lasting about 2h, had visited a local hospital, giving verapamil improved after treatment. 10 days ago, no obvious incentive for patients with palpitations again, the fastest heart rate of 180bpm, duration of 6h, the application of verapamil curative effect is not obvious. Attacks frequently, the average attack every 2 days 1 times, each time