Heart, Lung and Circulation

Peripheral Arterial Disease in Patients With Acute Coronary Syndrome: Results From a Large Real-World Registry


      Limited data exist regarding the significance of peripheral arterial disease (PAD) in patients with acute coronary syndrome (ACS).


      We evaluated 16,922 consecutive ACS patients who were prospectively included in a national ACS registry. The co-primary endpoint included 30 days major adverse cardiovascular event (MACE) (re-infarction, stroke, and/or cardiovascular death) and 1-year mortality.


      PAD patients were older (70±11 vs 63±13; p<0.01), male predominance (80% vs 77%; p=0.01), and more likely to sustain prior cardiovascular events. PAD patients were less likely to undergo coronary angiography (69% vs 83%; p<0.001) and revascularisation (80% vs 86%; p<0.001). Patients with PAD were more likely to sustain 30-day MACE (22% vs 14%; p<0.001) and mortality (10% vs 4.4%; p<0.001), as well as re-hospitalisation (23% vs 19%; p=0.001). After adjusting for potential confounders, PAD remained an independent predictor of 30-day MACE (odds ratio [OR], 1.6 [95% confidence interval (CI), 1.24–2.06]).
      Patients with compared to those without PAD had 2.5 times higher 1-year mortality rate (22% vs 9%; p<0.001). Co-existence of PAD remained an independent predictor of 1-year mortality after adjustment for potential confounders by multivariable regression analysis (OR, 1.62; 95% CI, 1.4–1.9). PAD was associated with a significant higher 1-year mortality rate across numerous sub-groups of patients including type of myocardial infarction (ST-elevation myocardial infarction vs non-ST-elevation myocardial infarction), and whether the patient underwent revascularisation.


      Acute coronary syndrome with concomitant PAD represents a high-risk subgroup that warrants special attention and a more tailored approach.


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