Indirect Measurement of Systolic Blood pressure during +G sub z Acceleration
Abstract
Determination of systolic blood pressure (Psa) with noninvasive techniques is more desirable than arterial invasion due to vascular complications and subject discomfort associated with the latter procedure (1, 2, 9). In high, sustained +Gz environments, accurate determination of this physiological parameter by indirect Korotkoff sound detection becomes inadequate due to biological noise artifact induced by increased skeletal muscle straining during performance of the M-1 maneuver necessary to prevent blackout and unconsciousness. This report describes a new technique utilizing a transcutaneous Doppler ultrasonic flow probe/sphygmomanometer system for noninvasive determination of Psa during +Gz environments. Noninvasive Psa determinations were confirmed by simultaneous invasive Psa determinations in the contralateral arm. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 28, 1974
- Accession Number
- ADA002939
Entities
People
- Frank J. Forlini Jr
Organizations
- United States Air Force School of Aerospace Medicine