Document Detail

Abnormal autonomic cardiovascular control in ankylosing spondylitis.
MedLine Citation:
PMID:  10419866     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: This study was aimed at assessing the contribution of the autonomic nervous system to adjustments of cardiovascular function in patients with ankylosing spondylitis (AS). METHODS: In 18 AS patients (mean age: 34.9; mean disease duration: 6.4 years) and 13 healthy controls (mean age: 31.7) the changes of heart rate (HR) with deep breathing (E/I ratio) and standing up (30/15 ratio) were recorded. The slope of cardiac baroreflex, the times series of blood pressure and HR values upon lying and standing, and venous plasma concentrations of catecholamines were also analysed. Erythrocyte sedimentation rate (ESR), plasma C reactive protein (CRP) concentration and a clinical index (BASDAI score) were used to assess the degree of disease activity in patients. RESULTS: In the standing patients, blood pressure was found to decrease progressively (p< 0.001). Furthermore, the patients with a BASDAI score > 5 had a higher heart rate than patients with a BASDAI score < 5 (p<0.02), and there was a trend for a similar difference when patients were classified according to their ESR and CRP. Plasma catecholamine concentrations and the E/I ratio were not different in patients from controls. The 30/15 ratio and the slope of the spontaneous baroreflex during standing were both lower in AS patients than controls (p< 0.01). CONCLUSIONS: This study demonstrated a change in autonomic nervous system function of AS patients, with a decreased parasympathetic activity, as evidenced by higher HR and lower baroreflex slope. As these significant deviances were mainly observed in patients with more active (or more inflammatory) disease, the autonomic nervous system involvement could be related to the inflammatory process. This autonomic strain may be related to the cardiac involvement in AS patients.
E Toussirot; M Bahjaoui-Bouhaddi; J C Poncet; S Cappelle; M T Henriet; D Wendling; J Regnard
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Annals of the rheumatic diseases     Volume:  58     ISSN:  0003-4967     ISO Abbreviation:  Ann. Rheum. Dis.     Publication Date:  1999 Aug 
Date Detail:
Created Date:  1999-09-17     Completed Date:  1999-09-17     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0372355     Medline TA:  Ann Rheum Dis     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  481-7     Citation Subset:  IM    
Department of Rheumatology, Centre Hospitalier Universitaire J Minjoz, Boulevard Fleming, 25030 Besançon Cédex, France.
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MeSH Terms
Autonomic Nervous System / physiopathology*
Baroreflex / physiology
Blood Pressure / physiology
Cross-Sectional Studies
Heart Rate / physiology
Hemodynamics / physiology*
Middle Aged
Norepinephrine / blood
Posture / physiology
Severity of Illness Index
Spondylitis, Ankylosing / physiopathology*
Reg. No./Substance:

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