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Background . Peripheral arterial disease (PAD) often coexists with congestive heart failure (CHF) and can be masked by symptoms of CHF such as functional limitation (FL), a common manifestation for both. Therefore, we sought to estimate the prevalence of PAD and its independent association with FL in CHF.  Methods.  We conducted a cross-sectional study on National Health and Nutrition Examination Survey (NHANES) data from 1999 to 2004 to quantify weighted prevalence of CHF and PAD. Study cohort consisted of 7513, with ankle brachial index (ABI) measurements at baseline. Independent association of PAD (ABI ≤ 0.9) with FL in CHF was determined with multivariate logistic regression (MVLR).  Results.  Overall weighted PAD prevalence was 5.2%. CHF was present in 305 participants, and the weighted prevalence of PAD in this subgroup was 19.2%. When compared, participants with CHF and PAD were more likely to be older ( P  < 0.001), hypertensive ( P  = 0.005) and hypercholesterolemic ( P  = 0.013) than participants with CHF alone. MVLR showed that PAD (adjusted OR = 5.15; 95% CI: 2.2, 12.05:  P  < 0.05) and arthritis (adjusted OR = 2.36; 95% CI: 1.10, 5.06:  P  < 0.05) were independently associated with FL in CHF.  Conclusion.  Independent association of PAD with FL suggests the need for reinforced screening for PAD in individuals with CHF.

cardiology research and practice

Impact of Peripheral Arterial Disease on Functional Limitation in Congestive Heart Failure: Results from the National Health and Nutrition Examination Survey (1999–2004)