Document Detail


Differences in arterial compliance, microvascular function and venous capacitance between patients with heart failure and either preserved or reduced left ventricular systolic function.
MedLine Citation:
PMID:  17644472     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Up to 50% of patients with the clinical syndrome of heart failure have preserved left ventricular systolic function (HF-PSF). These patients may have abnormalities of ventriculo-vascular coupling, due to increased vascular and ventricular stiffness.
METHODS: We compared arterial compliance, microvascular vasodilator function and venous capacitance (VC) in 3 groups of patients (n=12 each) matched for the presence of coronary heart disease: 1) HF and preserved systolic function (HF-PSF), 2) HF and reduced systolic function (HF-RSF) and 3) controls (no HF, PSF). Arterial compliance was assessed by measuring aortic pulse wave velocity (PWV) with applanation tonometry. Cutaneous microvascular function was assessed using Laser Doppler imaging (LDI) coupled with iontophoresis of endothelium-dependent (acetylcholine) and -independent (sodium nitroprusside) vasodilators. VC was measured using venous occlusion plethysmography.
RESULTS: PWV was significantly higher in HF-PSF subjects than in both HF-RSF and control groups (10.7 [1.1], 8.9 [1.7] and 8.6 [2.1] m/s respectively, p<0.05). Acetylcholine and nitroprusside induced vasodilatation were equally impaired in HF-PSF and HF-RSF, as compared to controls (p<0.01). VC was higher in HF-RSF subjects compared with HF-PSF subjects (1.75 [0.41], 1.34 [0.34] ml/100 ml forearm vol. respectively, p<0.05).
CONCLUSIONS: These findings are consistent with a more marked increase in vascular stiffness in HF-PSF than in HF-RSF and suggest that arterial stiffness, dynamic vasodilator function and venous abnormalities may be implicated in the complex pathophysiology of HF-PSF.
Authors:
Sean Balmain; Neal Padmanabhan; William R Ferrell; John J Morton; John J V McMurray
Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article     Date:  2007-07-19
Journal Detail:
Title:  European journal of heart failure     Volume:  9     ISSN:  1388-9842     ISO Abbreviation:  Eur. J. Heart Fail.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-09-03     Completed Date:  2007-11-13     Revised Date:  2011-06-08    
Medline Journal Info:
Nlm Unique ID:  100887595     Medline TA:  Eur J Heart Fail     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  865-71     Citation Subset:  IM    
Affiliation:
British Heart Foundation Cardiovascular Research Centre, University of Glasgow, Glasgow G12 8TA, Scotland, UK. seanbalmain@hotmail.com
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Arteries / physiopathology*
Compliance
Female
Heart Failure / physiopathology*
Humans
Male
Microcirculation / physiopathology*
Middle Aged
Systole
Vascular Capacitance / physiology*
Veins / physiopathology*
Ventricular Dysfunction, Left / physiopathology
Ventricular Function, Left / physiology

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


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