Abstract
Background
Lower extremity peripheral arterial disease (PAD) is highly prevalent and strongly associated with cardiovascular morbidity and mortality. The ankle-brachial index used to screen for PAD is not routinely performed in primary care settings.
Objective
To determine if self-reported PAD is an independent predictor of combined vascular events (myocardial infarction, ischemic stroke, and vascular death).
Design
Ongoing population-based prospective cohort (the Northern Manhattan Study). Subjects enrolled between July 1993 and June 2001 with a mean follow-up time of 7.1 years.
Patients
Subjects (n = 2,977), aged 40 years or older and free of prior stroke or myocardial infarction, were classified as having self-reported PAD if they answered affirmatively to one of two questions regarding exercise-induced leg pain or a prior diagnosis of PAD.
Main Outcome Measures
Combined vascular outcome defined as incident myocardial infarction, incident ischemic stroke, or vascular death.
Results
The mean age of the cohort was 68.9 ± 10.4 years; 64% were women; 54% Hispanic, 25% African-American, 21% Caucasian; 15% reported having PAD. After a mean follow-up of 7.1 years, self-reported PAD was significantly predictive of combined events (n = 484) in the univariate model (HR 1.5, 95% CI, 1.2–1.9) and after adjustment for traditional cardiovascular risk factors (HR 1.3, 95% CI, 1.0–1.7).
Conclusion
Self-reported PAD is an independent risk factor for future vascular events in this predominantly non-white cohort. The addition of two simple PAD questions to the routine medical history in general medicine settings could identify high-risk patients who would benefit from further vascular evaluation and risk factor modification.
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Acknowledgments
This work was supported by grants from the National Institute of Neurological Disorders and Stroke (R01 NS 29993, T32 NS 07153) and the General Clinical Research Center (2 M01 RR00645). The data were presented in part in abstract form at the 18th Annual American Heart Association Scientific Sessions in November 2006.
Funding/Support
This work was supported by grants from the National Institute of Neurological Disorders and Stroke (R01 NS 29993, T32 NS 07153) and the General Clinical Research Center (2 M01 RR00645). The funding organizations had no role in the design and conduct of the study, in the collection, analysis, or interpretation of the data, or in the decision to approve publication of the manuscript.
Conflict of Interest
Dr. Tatjana Rundek is a member of the advisory boards for Pfizer and BMS-Sanofi Pharmaceutical Partnership and receives personal compensation from New Health Sciences, Inc., for consulting. Dr. Ralph Sacco discloses receiving personal compensation from Boehringer-Ingelheim, Inc., and BMS-Sanofi Pharmaceutical Partnership for lecturing, and personal compensation from Boehringer-Ingelheim, Inc., Merck, Wyeth, and GlaxoSmithKline for consulting.
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Salameh, M.J., Rundek, T., Boden-Albala, B. et al. Self-Reported Peripheral Arterial Disease Predicts Future Vascular Events in a Community-Based Cohort. J GEN INTERN MED 23, 1423–1428 (2008). https://doi.org/10.1007/s11606-008-0694-x
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DOI: https://doi.org/10.1007/s11606-008-0694-x