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Lower functional capacity is associated with higher cardiovascular risk in Brazilian patients with intermittent claudication.

Authors
  • Gengo e Silva, Rita de Cassia1
  • de Melo, Vanessa Ferreira Amorim2
  • Wolosker, Nelson3
  • Consolim-Colombo, Fernanda Marciano4
  • 1 School of Nursing, University of Sao Paulo, Sao Paulo, Brazil. Electronic address: [email protected] , (Brazil)
  • 2 Heart Institute (InCor), Medical School, University of Sao Paulo, Sao Paulo, Brazil. , (Brazil)
  • 3 Claudication Unit, Vascular and Endovascular Surgery Department, Medical School, University of Sao Paulo, Sao Paulo, Brazil. , (Brazil)
  • 4 Laboratory of Human Clinical Investigation of Hypertension Unit, Heart Institute (InCor), Medical School, University of Sao Paulo, Sao Paulo, Brazil. , (Brazil)
Type
Published Article
Journal
Journal of vascular nursing : official publication of the Society for Peripheral Vascular Nursing
Publication Date
March 2015
Volume
33
Issue
1
Pages
21–25
Identifiers
DOI: 10.1016/j.jvn.2014.08.001
PMID: 25700734
Source
Medline
License
Unknown

Abstract

The purpose of this study was to examine the association between cardiovascular risk estimated by the Framingham Risk Score and functional capacity in patients with peripheral artery disease using a 6-minute walk test. Fifty-six participants with intermittent claudication were recruited. The Framingham Risk Score was calculated and used to split the participants into two groups: Group A (mild and moderate risk) and group B (severe risk). The ankle-brachial index (ABI) was calculated for each leg using a handheld Doppler probe. Walking ability was verified by a 6-minute walk test. Descriptive statistics were used to describe the sample's demographic and clinical characteristics. To compare clinical data between the two groups, a t test or Mann-Whitney test was used as appropriate according to the type of variable being analyzed. The Pearson coefficient was used to verify the association between cardiovascular risk and functional capacity. Group A had 19 participants (60.5 ± 6.3 years; 36.8% male) and group B had 37 participants (63.4 ± 8.7 years; 73% male). No differences were observed when comparing the ABI between both groups. The total distances covered by the men in group A were shorter compared with those of group B (331.4 + 51.5 vs 257.9 + 84.0; P = .02). The cardiovascular risk score was negative and was significantly correlated with total distances for men (r = -0.53; P = .001) and with pain-free distances for women (r = -0.46; P = .03). Functional capacity, evaluated through a 6-minute walk test, seems to be associated with 10-year total mortality risk.

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