We report on catheter ablation and clinical results in an adult with
Wolff-Parkinson-White (WPW) syndrome for dyssynchrony-related
dilated cardiomyopathy in the absence of supraventricular tachycardia
(SVT). This patient did not have sustained SVT, but developed
rapid progression of ventricular dysfunction that was not responsive
to heart failure medication. Ventricular preexcitation could not be
medically suppressed, but was successfully ablated. This was followed
by complete resolution of ventricular dysfunction within six
months.