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Use of implantable telemetry systems for study of cardiovascular phenomena.Preliminary observations of cardiovascular function have been made in four chimpanzees using multichannel implantable units. Measurements of right- and left-sided pressures were periodically made in these animals over a four-month period, including continuous observations for selected 24-hour periods. Pressures recorded with animals in an awake, unanesthetized, unrestrained state were much lower than pressures reported for restrained animals in similar situations. Diurnal variations of pressure tended to occur, but were not as clear-cut as those reported to occur for humans. The ability to implant a transmitter chronically and receive useful multichannel information in the chimpanzee encourages the future use of such implant devices as part of the control system for an artificial heart or directly for use in man.
Document ID
19720060330
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sandler, H.
Fryer, T. B.
Westbrook, R. M.
(NASA Ames Research Center Moffett Field, Calif.; USAF, School of Aerospace Medicine, Brooks AFB, Tex., United States)
Stone, H. L.
(Texas, University Galveston, Tex., United States)
Date Acquired
August 6, 2013
Publication Date
September 1, 1972
Publication Information
Publication: Circulation Research
Volume: 31
Subject Category
Biotechnology
Accession Number
72A43996
Funding Number(s)
CONTRACT_GRANT: NASA ORDER A-94544
Distribution Limits
Public
Copyright
Other

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