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Advance techniques for monitoring human tolerance to positive Gz accelerationsTolerance to positive g accelerations was measured in ten normal male subjects using both standard and advanced techniques. In addition to routine electrocardiogram, heart rate, respiratory rate, and infrared television, monitoring techniques during acceleration exposure included measurement of peripheral vision loss, noninvasive temporal, brachial, and/or radial arterial blood flow, and automatic measurement of indirect systolic and diastolic blood pressure at 60-sec intervals. Although brachial and radial arterial flow measurements reflected significant cardiovascular changes during and after acceleration, they were inconsistent indices of the onset of grayout or blackout. Temporal arterial blood flow, however, showed a high correlation with subjective peripheral light loss.
Document ID
19740030990
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Pelligra, R.
Sandler, H.
Rositano, S.
Skrettingland, K.
(NASA Ames Research Center Moffett Field, Calif., United States)
Mancini, R.
(Santa Clara, University Santa Clara, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
June 1, 1973
Subject Category
Biotechnology
Accession Number
74A13740
Distribution Limits
Public
Copyright
Other

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