右室流出道室性心动过速诱发心动过速性心肌病1例

One case of tachycardia-induced cardiomyopathy caused by right ventricular outflow tract-ventricular tachycardia

1病例资料患者，女，36岁，因发作性心悸10年余，加重伴胸闷、气短4d入院。既往频发室性期前收缩10年余，否认有高血压、糖尿病、心肌病、感染、自身免疫性疾病、家族遗传病及猝死史。

A 36-year-old woman has suffered from paroxysmal palpitations, chest tightness and shortness of breath for more than 10 years. ECG showed broad QRS, ventricular taehycardia and atrioventricular separation. The ECG pointed to an origin in the right ventricular outflow tract. Echocardiography showed that the left ventricular end-diastolic diameter was 53 mm and the ejection fraction was 40G. B type natriuretic peptide was 7 920 pg/ ml. A single radiofrequency application at the site of ectopy was immediately effective. Holter monitoring was normal after ablation. Final diagnosis was right ventricular outflow tract-ventricular tachycardia, taehycardia-induced cardiomyopathy.