Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/936028

OpenURL Link
Title
The effect of baroreflex adaptation on the dynamic cardiovascualr response to head-up tilt
Author/Creator
Newman, David G.;  White, Saxon William;  Callister, Robin
Description
Background: Baroreflex adaptation to repetitive +Gz has been reported previously. The underlying mechanism may involve different responses of stroke volume (SV) and total peripheral resistance (TPR) to +Gz. Hypothesis: The previously observed enhanced mean arterial pressure (MAP) regulation in fighter pilots (FP) is mediated by increases in SV and/or TPR. Methods: There were 8 pilots and 12 non-pilots who underwent head-up tilt. SV was determined using impedance cardiography. Results: MAP increased significantly in FP, due to heart rate (HR) and TPR increasing more and SV decreasing less. Conclusion: Baroreflex adaptation results in better performance of HR, SV and TPR in response to +Gz.
Relation
Aviation, Space, and Environmental Medicine Vol. 71, Issue 3, p. 255-259
Relation
http://www.asma.org/publications/asem-journal/read-the-journal
Date
2000
Publisher
Aerospace Medical Association
Keyword(s)
stroke volume;  peripheral resistance;  impedance cardiography;  +Gz;  tilt;  postural;  acceleration;  baroreflex;  cardiovascular;  adaptation
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/936028
Identifier
ISSN:0095-6562
Language
eng
Reviewed
Reviewed
7 Visitors 15 Hits 1 Downloads
Save/E-mail Citation
Citation Format
E-mail Address
Subject
"Aviation, Space, and Environmental Medicine"
 
OR