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Systolic and diastolic time intervals in pulsus alternans

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1974Publisher:Elsevier BVJournal:American Heart Journal, volume 87, pages 5-10 (issn: 0002-8703,

Authors: David H. Spodick; David H. Spodick; Veronica M. Quarry; Veronica M. Quarry; Abdul H. Khan; Abdul H. Khan;

doi: 10.1016/0002-8703(74)90383-4

pmid: 4808759

Systolic and diastolic time intervals in pulsus alternans

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Abstract

Systolic and diastolic time intervals in 14 cardiac patients with pulsus alternans revealed significant alternation of preinjection period (PEP), isovolumic contraction time (IVCT), left ventricular ejection time (LVET), ejection time index (ETI), PEP/LVET, and carotid dD/dt with better functional values in the strong beats. Cycle length, duration of electromechanical systole (EMS) and total diastole, i.e., isovolumic relaxation period (IRP) and diastolic filling period (DFP) occurred in 7 out of 8 patients. These diastolic intervals alternated reciprocally such that the IRP of the strong beats encroached upon the DFP of the next (weak) beats.

Related Organizations

Tufts University
United States
Lemuel Shattuck Hospital
United States

Keywords

Time Factors, Heart Diseases, Heart Ventricles, Phonocardiography, Blood Pressure, Electrocardiography, Carotid Arteries, Heart Rate, Humans, Kinetocardiography, Pulse

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