Mechanism
of Postextrasystolic Potentiation in the Right Ventricle Louis J. Dell’ltalia, MD
The mechanism of postextrasystotic potentiation (PE6P) has keen studied in the ieft vent&R in humans; however, this phenomenon has not keen evaktated in the right ventride. Accordingly, 18 dnus heats were wmpared to postextrasystoiii beats during the same cineventrieutogram using simultaneous high-fidefity right ventrieutar (RV) and cast-validated a~pu~ryarterypbiplane cinevenbicufograph vokaues in normal pattents. The increase in cyde length was 22 f 12% (standard deviation) in the postextrasystotic heats. Right ventricutar ejection fraction increased from 61 f 10 to 66 f 4% (p
of Postextrasystolic Potentiation in the Right Ventricle Louis J. Dell’ltalia, MD
The mechanism of postextrasystotic potentiation (PE6P) has keen studied in the ieft vent&R in humans; however, this phenomenon has not keen evaktated in the right ventride. Accordingly, 18 dnus heats were wmpared to postextrasystoiii beats during the same cineventrieutogram using simultaneous high-fidefity right ventrieutar (RV) and cast-validated a~pu~ryarterypbiplane cinevenbicufograph vokaues in normal pattents. The increase in cyde length was 22 f 12% (standard deviation) in the postextrasystotic heats. Right ventricutar ejection fraction increased from 61 f 10 to 66 f 4% (p
