Objectives: To determine whether different levels of the ankle-brachial pressure index (ABPI) are associated with an increased risk for progressive limb ischemia, nonfatal and fatal cardiovascular events. To investigate the prognostic value of signs and symptoms associated with peripheral arterial occlusive disease (PAOD).
Design: Prospective follow-up study.
Setting: Eighteen general practice centers in the Netherlands.
Participants: Three thousand six hundred forty-nine participants (53% female) with a mean age of 59 years (range: 40-78 years).
Main outcome measures: Progressive limb ischemia, cardiovascular morbidity and mortality.
Results: At baseline, 458 participants had PAOD, defined as an ABPI < 0.95. Among these, 148 (32.2%) had an ABPI < 0.70. Cox proportional hazards models showed that after a mean follow-up period of 7.2 years, PAOD patients with an ABPI < 0.70 were at higher risk for cardiovascular death, compared with participants with a moderately reduced ABPI (< 0.95 - > or = 0.70): HR 2.3 versus 1.2. Older age, complaints of intermittent claudication, abnormal pedal pulses, elevated blood pressure, and coexisting cardiovascular disease at baseline were also significant independent prognostic factors for one or more of the adverse outcome events in these patients.
Conclusion: The ABPI is inversely associated with cardiovascular mortality in PAOD patients. A low ABPI is an independent predictor for cardiovascular mortality in PAOD patients.