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过去认为慢性房性心动过速是无任何心肌后遗症的良性过程。近期研究表明阵发性心动过速与左心室功能不全有关,临床上则表现为心肌病。本文报道了1例此类患者,其特点为病史长,诊治延迟,用哌氟酰胺(flecainide)治疗有效。病例男,13岁。7年前心电图曾示有心动过速,安静时心率150～170次/分,但无自觉症状,并一直参加正常体育活动。就诊时唯一主诉是站立或下跪时间过长会发生晕厥。查体:安静时心率148次/
In the past that chronic atrial tachycardia is a benign process without any myocardial sequelae. Recent studies have shown that paroxysmal tachycardia and left ventricular dysfunction, the clinical manifestations of cardiomyopathy. This article reports one case of such patients, characterized by a long history, diagnosis and treatment delay, effective with flecainide (flecainide) treatment. Case male, 13 years old. Seven years ago, the ECG showed tachycardia, quiet heart rate 150 ~ 170 beats / min, but no symptoms, and has been involved in regular physical activity. The only complaint at the time of treatment is standing or kneeling for too long and syncope occurs. Physical examination: quiet heart rate 148 times /