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J Appl Physiol 17: 479-481, 1962;
8750-7587/62 $5.00
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Ventricular asynchronism in the dog

Philip Samet 1, William H. Bernstein 1, and Robert S. Litwak 1

1 Cardio-Pulmonary Laboratory, Department of Medicine, Mount Sinai Hospital, Miami Beach; and Section of Cardiology, Department of Medicine and Department of Surgery, University of Miami School of Medicine, Coral Gables, Florida

Dissociation of electrical and mechanical asynchronism in the canine right and left ventricles has been studied by simultaneous registration of right and left ventricular pressure and strain gauge arch curves and the electrocardiogram. Observations were made during sinus rhythm and during acetylstrophanthidin-induced ventricular premature beats with widened aberrant QRS complexes. The data demonstrate only limited mechanical asynchronism during the asynchronous electrical depolarization of ventricular premature systoles.

Submitted on October 19, 1961






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