Differences in Mechanism Between Syncope Resulting from Rapid Onset Acceleration and Orthostatic Stress

作者: David A. Self , Curtis D. White , Robert M. Shaffstall , Benjamin L. Mtinangi , Jennifer S. Croft

DOI: 10.21236/ADA333371

关键词: Syncope (phonology)PoolingMedicinePressure suitAccelerationVasodilationStress physiologyAnesthesiaOrthostatic stressRapid onset

摘要: Abstract : Orthostatically- induced syncope is accompanied by venous pooling and vasodilatation. Loss of consciousness during head-to-foot acceleration (G-LOC) in aviators may be caused a different mechanism, as should prevented through the use an anti-G suit. This research was conducted to test hypothesis that individuals wearing well-fitted garment, there are no important changes volume dependent regions loss resulting from rapid onset stress. Furthermore, this work compares patterns G-LOC subjects seen volunteers patients subjected orthostatic The tilt/LBNP tests were establish what level required induce absence hydrostatic component (other than 1 G) confirm our equipment sensitive enough detect large cause syncope.

参考文章(12)
S. A. Bergman, W. A. Carpentier, R. A. Wolthuis, A. Leblanc, Response of local vascular volumes to lower body negative pressure stress. Aviation, Space, and Environmental Medicine. ,vol. 46, pp. 697- 702 ,(1975)
Harold Sandler, Alvese Polese, Leslie D. Montgomery, Hemodynamic responses to seated and supine lower body negative pressure - Comparison with +Gz acceleration Aviation, Space, and Environmental Medicine. ,vol. 63, pp. 467- 475 ,(1992)
Gravity and the circulation. Proceedings of The Royal Society B: Biological Sciences. ,vol. 199, pp. 485- 491 ,(1977) , 10.1098/RSPB.1977.0156
JL Vukasovic, JK al-Timman, R Hainsworth, The effects of lower body negative pressure on baroreceptor responses in humans Experimental Physiology. ,vol. 75, pp. 81- 93 ,(1990) , 10.1113/EXPPHYSIOL.1990.SP003388
Zechman Fw, Mains Rc, Musgrave Fs, Changes in total leg volume during lower body negative pressure. Aerospace medicine. ,vol. 40, pp. 602- 606 ,(1969)
Michaelson Ed, Burton Rr, Leverett Sd, Man at high sustained +Gz acceleration: a review. Aerospace medicine. ,vol. 45, pp. 1115- 1136 ,(1974)
Burns Jw, Parnell Mj, Laughlin Mh, Regional distribution of cardiac output in unanesthetized baboons during +Gz stress with and without an anti-G suit. Aviation, Space, and Environmental Medicine. ,vol. 53, pp. 133- 141 ,(1982)
Burton Rr, Forster Em, Krutz Rw, Physiologic correlates of protection afforded by anti-G suits. Aviation, Space, and Environmental Medicine. ,vol. 61, pp. 106- 111 ,(1990)
Lambert Eh, Wood Eh, Some factors which influence the protection afforded by pneumatic anti-g suits. The Journal of aviation medicine. ,vol. 23, pp. 218- ,(1952)
Lambert Eh, Wood Eh, Effects of acceleration in relation to aviation. Federation proceedings. ,vol. 5, pp. 327- ,(1946)