Document Detail

Reactivity of Arterial Vessels during Antiorthostasis and Systemic Hypotension.
MedLine Citation:
PMID:  21246086     Owner:  NLM     Status:  In-Data-Review    
In experiments on rats, changes in blood pressure and cardiac output in response to antiorthostatic (head-down) tilt 15° and 45° were examined under conditions of decreased arterial tone induced by sodium nitroprusside. The decrease in initial systemic blood pressure to 90 mm Hg attenuated the pressor responses to antiorthostasis, while further drop in blood pressure to 70-60 mm Hg provoked depressor responses in half cases. No blood pressure responses to antiorthostasis were observed when blood pressure dropped to 50 mm Hg. Correlation analysis confirmed the existence of a direct dependence of pressor responses to orthostasis on the initial blood pressure.
T V Balueva; I V Sergeev
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Bulletin of experimental biology and medicine     Volume:  149     ISSN:  1573-8221     ISO Abbreviation:  Bull. Exp. Biol. Med.     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2011-01-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0372557     Medline TA:  Bull Exp Biol Med     Country:  United States    
Other Details:
Languages:  eng; rus     Pagination:  298-302     Citation Subset:  IM    
Laboratory of Blood Circulation Physiology, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia.
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