WASHINGTON, DC — A higher percentage of premature ventricular contractions (PVCs) predicted a dropoff in LV ejection fraction and a greater risk of incident heart failure and mortality in a long-term ...
In tracing "a" of Figure 1, there seems to be only one P wave in front of each QRS complex, suggesting sinus rhythm. However, during the compensatory pauses after the PVCs (↑) in tracing "b," there ...
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