Respiratory fluctuations in durations of phases of ventricular systole in the dog

Muir, W.W.; Hamlin, R.L.

American Journal of Veterinary Research 34(5): 647-652

1973


ISSN/ISBN: 0002-9645
PMID: 4703509
Document Number: 69851
During the inspratory phase of ventilation, when heart rate accelerated, ejection timed for both ventricles shortened, preejection period for both ventricles lengthened and total electromechanical systole for both ventricles shortened. The changes observed were greater for the left than for the right ventricle in all instances. During the expiratory phase of ventilation, opposite changes in the duration of phases of systole occurred.

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