Effects ofabnormal activation on thetime course oftheleft ventricular pressurepulse indilated cardiomyopathy

Objective-To investigate theeffects of QRS duration oncharacteristics ofthe leftventricular pressure pulsederived fromthetimecourse offunctional mitral regurgitation by continuouswave Doppler. Design-Retrospective andprospective studyof50patients withdilated cardio- myopathy, byelectrocardiography, echo- cardiography, and Dopplercardio- graphy. Setting-Tertiary cardiacreferral centre.