Severity of coronary artery disease affects prognosis of patients with peripheral artery disease

Abstract

It remains unclear whether severity of coronary artery disease (CAD) affects the prognosis of patients with peripheral artery disease (PAD). In this retrospective, multicenter study, we analyzed 537 consecutive patients with symptomatic PAD who underwent both peripheral artery revascularization and coronary angiography (CAG) prior to revascularization. We classified patients into 3 groups based on CAG: no-CAD group, intermediate CAD group (1-2 diseased vessels), and triple-vessel disease (TVD) group. We evaluated clinical outcome including all-cause death, major adverse cardiac events (MACEs), and amputation. The no-CAD, intermediate CAD, and TVD groups comprised 204, 268, and 65 patients, respectively. Mean follow-up duration was 952 ± 497 days. Freedom from any adverse outcome was highest in the no-CAD group and lowest in the TVD group (all-cause death: 86% vs 77% vs 65%, P = .043; MACE: 95% vs 87% vs 78%, P = .044; amputation: 96% vs 92% vs 83%, P = .0015). Severity of CAD affected prognosis of patients with PAD.

Keywords: coronary artery disease; peripheral artery disease; prognosis.