[Prognostic value of supraventricular arrhythmias in heart failure]

Supraventricular tachyarrhythmias can be responsible for severe hemodynamic derangement which may contribute to the progression and worsening of heart failure. The resultant effect of these arrhythmias, however, is conditioned by several concomitant factors, such as age of the patients, left ventricular systolic function, and ventricular rate response. If the role of such arrhythmias in functional class, morbidity, and functional capacity is well accepted, controversial data are available on their role on mortality in patients with heart failure.