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Effect of varying ventricular function by extrasystolic potentiation on closure of the mitral valve.Mitral regurgitant indexes were measured by roentgen videodensitometry in anesthetized dogs without thoracotomy before, during and after extrasystolic potentiation of ventricular contraction while the atria and ventricles were driven in normal temporal sequence simultaneously or in such a way as to induce atrial fibrillation. Small amounts of mitral reflux were observed with simultaneous atrial and ventricular driving and with atrial fibrillation in the control measurements before initiation of extrasystolic potentiation. Reflux became negligible during extrasystolic potentiation and increased beyond control levels after termination of extrasystolic potentiation.
Document ID
19720027370
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Vandenberg, R. A.
Williams, J. C. P.
(Mayo Clinic and Mayo Foundation Rochester, Minn., United States)
Sturm, R. E.
Wood , E. H.
(Minnesota, University Rochester, Minn., United States)
Date Acquired
August 6, 2013
Publication Date
July 1, 1971
Publication Information
Publication: American Journal of Cardiology
Volume: 28
Subject Category
Biosciences
Accession Number
72A11036
Funding Number(s)
CONTRACT_GRANT: NIH-HE-4664
CONTRACT_GRANT: NIH-FR-00007
CONTRACT_GRANT: NIH-HE-3532
CONTRACT_GRANT: NSG-327
CONTRACT_GRANT: NGR-24-003-002
Distribution Limits
Public
Copyright
Other

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