To assess prospectively the effect of cardiac resynchronisation therapy (CRT) on New York Heart Association (NYHA) functional class, cardiac function, cardiopulmonary exercise performance, and neurohormonal activation during 24 months' follow up.
Medical Clinic II, Department of Cardiology, University of Technology Dresden, Fetscherstrasse 76, 01307 Dresden, Germany. martin.braun@mailbox.tu-dresden.de
