Document Detail


Measurement of vascular tone and stroke volume baroreflex gain.
MedLine Citation:
PMID:  22092290     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The arterial baroreflex system (BRS) consists of at least three closed-loop control systems: the heart rate (HR), vascular tone (VT), and stroke volume (SV) BRSs. Whereas HR-BRS gain is well studied, VT-BRS and SV-BRS gain are not. This study aimed to develop a method for quantifying VT-BRS and SV-BRS gain using an established HR-BRS gain measurement approach. ECG and beat-to-beat blood pressure (BP) were recorded in 31 young healthy participants during three tasks. Sequences of R-to-R wave intervals (RRI) of the ECG, pulse transit time (PTT), and SV were measured to assess HR-, VT-, and SV-BRS gain using the cross-spectral technique of computing the BP-RRI, BP-PTT, and BP-SV transfer functions. Gain in each BRS arch was measured in individuals with intact BRS functioning. Functional overlap and independence was noted in the BRS arches. The implications of the proposed method are discussed.
Authors:
Evgeny G Vaschillo; Bronya Vaschillo; Jennifer F Buckman; Robert J Pandina; Marsha E Bates
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2011-10-06
Journal Detail:
Title:  Psychophysiology     Volume:  49     ISSN:  1540-5958     ISO Abbreviation:  Psychophysiology     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-01-20     Completed Date:  2012-05-10     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  193-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Society for Psychophysiological Research.
Affiliation:
Center of Alcohol Studies, Rutgers-The State University of New Jersey, Piscataway, New Jersey 08854, USA. evaschil@rci.rutgers.edu
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MeSH Terms
Descriptor/Qualifier:
Baroreflex / physiology*
Blood Pressure / physiology*
Electrocardiography
Female
Heart Rate / physiology*
Humans
Male
Stroke Volume / physiology*
Young Adult
Grant Support
ID/Acronym/Agency:
HHSN275201000003C/HD/NICHD NIH HHS; HHSN275201000003C//PHS HHS; K01 AA017473/AA/NIAAA NIH HHS; K01 AA017473/AA/NIAAA NIH HHS; K02 AA000325/AA/NIAAA NIH HHS; K02 AA00325/AA/NIAAA NIH HHS; R01 AA015248/AA/NIAAA NIH HHS; R01 AA015248/AA/NIAAA NIH HHS
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