| Intra- and inter-tester reproducibility of venous occlusion plethysmography: comparison between a manual and a semi-automatic method of blood flow analysis. | |
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MedLine Citation:
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PMID: 19822924 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Venous occlusion plethysmography (VOP) is a valid non-invasive method to assess peripheral blood flow (BF) in humans. Our aim was to determine intra- and inter-tester reproducibility of BF analysis using a traditional manual method and a novel system, based on a semi-automatic approach. Ten healthy subjects and ten subjects with chronic heart failure (CHF) were evaluated. Blood flow was measured on the forearm at baseline and after 5 min of circulatory occlusion (reactive hyperemia (RH)). Two testers independently and blindly analyzed each VOP recording. Both methods were highly reproducible intra- and inter-testers. In addition, there was a high association between the methods, since the intraclass correlation coefficients (ICCs) for healthy subjects were 0.99, 0.99 and 0.99, and the coefficients of variation (CVs) were 1.8, 2.4 and 1.6% for baseline, RH peak and RH area under the curve, respectively. For CHF subjects, the ICCs were 0.99, 0.98 and 0.99, and the CVs were 2.9, 3.6 and 2.0%. In addition, the time spent on the semi-automatic analyses was shorter (p < 0.05). In conclusion, both methods demonstrated high intra- and inter-tester reproducibility for baseline and RH BF analysis. However, since the semi-automatic method was faster to generate the results, the present study supports its usage for the analysis of BF measured by VOP. |
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Authors:
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Bruno Moreira Silva; Fabricia Junqueira Neves; Natalia Galito Rocha; Mauricio Cagy; Marcio Nogueira de Souza; Antonio Claudio Lucas da Nóbrega |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-10-13 |
Journal Detail:
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Title: Physiological measurement Volume: 30 ISSN: 1361-6579 ISO Abbreviation: Physiol Meas Publication Date: 2009 Nov |
Date Detail:
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Created Date: 2009-10-15 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9306921 Medline TA: Physiol Meas Country: England |
Other Details:
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Languages: eng Pagination: 1267-79 Citation Subset: IM |
Affiliation:
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Laboratory of Exercise Sciences-LACE, Federal Fluminense University, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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