cardiology doctors in yelahanka new town ventricular ectopic beats Like SVEBs, VEBs are common and, by themselves, generally harmless. Past attempts to suppress them as harbingers of malignant arrhythmias have caused more harm than good. Nevertheless, recognition of their electrocardiographic morphology and behaviour remain important. VEBs that have a fixed coupling to the preceding beats are thought to represent a localised ventricular re-entry and are said to be extra-systolic (extra-systoles). In the top strip of, they each replace a sinus beat, with a sinus P wave buried inside the ectopic QRS; their pauses are exactly (fully) compensatory. In the bottom strip, the pause cannot be quantified but, unlike the aberrant beats of Ashman’s phenomenon in there is hint of a compensatory