Document Detail


Stress profile in essential hypertension.
MedLine Citation:
PMID:  15750254     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study was undertaken to test the hypothesis that basal sympathetic activity and sympathetic reactivity to stress are increased in patients with essential hypertension. One hundred and fifteen randomly selected patients with essential hypertension and an equal number of age- and sex-matched normal controls were included in this study. Various parameters, viz., heart rate, respiratory rate, blood pressure, peripheral skin temperature, electromyographic activity of the frontalis muscle, skin conductance (measured by electrodermography), and blood pressure, were measured in the resting state in both groups. These parameters were then measured during the performance of various stressful activities, such as mental arithmetical calculations, thinking of unpleasant thoughts, staring at a fixed point, catching of a dropped object, and reading aloud for 1 min each, and again over a 1-min quiet period following each stressful activity. Changes in various parameters in the two groups were analyzed and compared. Baseline heart rate, respiratory rate, electromyographic activity and peripheral skin temperature were higher-while skin conductance was lower-in the hypertensive group than in the control group. The increases in systolic blood pressure, diastolic blood pressure, heart rate, respiratory rate, electromyographic activity, and peripheral skin temperature in response to stress were greater in hypertensive patients than in controls, while skin conductance showed a higher elevation in controls than in hypertensive patients. In conclusion, sympathetic nervous system activity is increased in patients with essential hypertension. The reduced skin conductance and high peripheral skin temperature in these patients may be due to a possible dermal neurovascular dysfunction.
Authors:
Rajeev M Kaushik; Sukhdev K Mahajan; Vemreddi Rajesh; Reshma Kaushik
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Hypertension research : official journal of the Japanese Society of Hypertension     Volume:  27     ISSN:  0916-9636     ISO Abbreviation:  Hypertens. Res.     Publication Date:  2004 Sep 
Date Detail:
Created Date:  2005-03-07     Completed Date:  2005-05-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9307690     Medline TA:  Hypertens Res     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  619-24     Citation Subset:  IM    
Affiliation:
Department of Medicine, Himalayan Institute of Medical Sciences, Uttaranchal, India. rmkaushik1@rediffmail.com
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Female
Humans
Hypertension / epidemiology,  physiopathology*
Male
Middle Aged
Prospective Studies
Psychophysics / methods*
Risk Factors
Stress, Psychological / diagnosis*,  epidemiology,  physiopathology*
Sympathetic Nervous System / physiopathology

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


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