心动过速性心肌病--个案报道及文献复习

Tachycardia-induced cardiomyopathy——individual case report and literature review

心动过速性心肌病指继发于长期心动过速导致的左室并和(或)心房功能异常,一旦心动过速终止,心功能异常可以完全或部分恢复。心动过速性心肌病在持续心动过速的动物模型和患者都明确证实,心动过速性心肌病的诊断为回顾性,即心律失常恢复正常后,损害的心功能得到恢复;临床医师应该认识到不能解释的心功能异常有可能就是心动过速性心肌病,而控制心律失常可能就会改善心功能。

Objective：The term tachycardia-induced cardiomyopathy or tachycardiomyopathy refers to impairment in left ventricular and/or atrial function secondary to chronic tachycardia, which can be partially or completely reversed once the tachyarrhythmia was controlled. Tachycardia induced cardiomyopathy has been shown to occur both in experimental models and in patients with incessant tachyarrhythmia. The diagnosis of tachycardia-induced cardiomyopathy is usually made following observation of marked improvement in systolic function after normalization of heart rate. Clinicians should be aware that patients with unexplained systolic dysfunction may have tachycardia-induced cardiomyopathy, and that con- trolling the arrhythmia may result in improvement of systolic function.