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The first derivative of the carotid displacement pulse.The amplitude and time relationships of the carotid derivative in normal individuals and unselected cardiac patients is investigated together with the effects of different contraction strengths in patients with pulsus alternans and subjects challenged with isoproterenol and propranolol. Data regarding the relationship between the preejection period (PEP) and the ratio of peak to total amplitude of the carotid displacement pulse derivative are presented. It is found that cardiac abnormality tends to reduce the rate of rise of the carotid displacement pulse. The results obtained show that the PEP is a somewhat more sensitive index of the changes studied than the carotid displacement derivative.
Document ID
19720060895
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Khan, A. H.
(Tufts University Boston, Mass., United States)
Spodick, D. H.
(Lemuel Shattuck Hospital; Tufts University; Boston University, Boston, Mass., United States)
Date Acquired
August 6, 2013
Publication Date
October 1, 1972
Publication Information
Publication: American Heart Journal
Volume: 84
Subject Category
Biosciences
Accession Number
72A44561
Funding Number(s)
CONTRACT_GRANT: NGR-22-012-006
Distribution Limits
Public
Copyright
Other

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