Document Detail


Cardiovascular consequences of high-performance aircraft maneuvers: implications for effective countermeasures and laboratory-based simulations.
MedLine Citation:
PMID:  17486177     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The gravitational stress encountered by pilots of high-performance aircraft can cause dramatic shifts in blood volume and circulatory pressure, thus placing the cardiovascular system under significant stress, sometimes resulting in loss of consciousness due to cerebral under-perfusion. Since pilots experience both increased and decreased gravitational stress in high-risk environments, it is important not only to examine the cardiovascular effects of altered gravitational exposure, but also to create effective countermeasures that will increase pilot safety. In this review, we discuss the cardiovascular consequences of rapid changes in gravitational forces. We also examine the effectiveness of the countermeasures that have been developed to combat gravity-induced loss of consciousness. Finally, we examine those current laboratory-based techniques that simulate hyper-gravity and the "push-pull effect"; making it possible to investigate the cardiovascular mechanisms responsible for maintaining cerebral perfusion and consciousness.
Authors:
Jessica M Scott; Ben T A Esch; Len S Goodman; Shannon S D Bredin; Mark J Haykowsky; Darren E R Warburton
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Applied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolisme     Volume:  32     ISSN:  1715-5312     ISO Abbreviation:  -     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-05-08     Completed Date:  2007-06-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101264333     Medline TA:  Appl Physiol Nutr Metab     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  332-9     Citation Subset:  IM    
Affiliation:
Cardiovascular Physiology and Rehabilitation Laboratory, The University of British Columbia, 6108 Thunderbird Blvd., Rm. 205, Unit II Osborne Centre, Vancouver, BC V6T 1Z3, Canada.
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MeSH Terms
Descriptor/Qualifier:
Acceleration / adverse effects
Aerospace Medicine
Aircraft*
Cardiovascular System / physiopathology*
Gravitation
Humans
Space Suits
Stress, Physiological / prevention & control*
Unconsciousness / prevention & control

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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