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(Chest. 1967;52:652-655.)
© 1967 American College of Chest Physicians

Hemodynamic Results of Right Atrial Pacing in 33 Normal Subjects

Philip Samet M.D., F.C.C.P.1; Cesar Castillo M.D.2; William H. Bernstein M.D.1; and Pedro Fernandez M.D.1

1 Section of Cardiology, Department of Medicine, Mount Sinai Hospital, Miami Beach and the University of Miami School of Medicine, Coral Gables
2 Section of Cardiology, Department of Medicine, Mount Sinai Hospital, Miami Beach and the University of Miami School of Medicine, Coral Gables

The effect of increasing heart rate above control sinus rate was studied in 33 normal subjects by right atrial bipolar electrode catheter pacing. At all atrial pacing rates, significant cardiac output increments are noted compared to the outputs during the control sinus rate. Further heart rate elevation produced by electrical pacing fails to elevate cardiac output above the levels noted at the lower atrial pacing rates.






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Copyright © 1967 by the American College of Chest Physicians.