Prognostic Impact of Statins on Patients With Peripheral Artery Disease With Elevated C-Reactive Protein Levels

Published:October 15, 2022DOI:
      This study aimed to elucidate the prognostic influence of statins in relation to the degree of inflammation at the time of endovascular therapy (EVT) for patients with peripheral artery disease (PAD). This observational study included patients with PAD who underwent EVT, including 285 statin users and 275 statin non-users. They were assigned into four groups depending on C-reactive protein (CRP) level at the time of EVT: low CRP (<0.1 mg/dL), intermediate-low CRP (0.1-0.3 mg/dL), intermediate-high CRP (0.3-1.0 mg/dL), and high CRP (>1.0 mg/dL). A composite of death and major amputation as the primary endpoint was compared between statin users and non-users in each CRP category. Overall, statin users showed a lower event rate than non-users (log-rank, p=0.02). However, the event rates did not differ significantly between statin users and non-users in the low, intermediate-low, and intermediate-high CRP categories. In the high CRP category, statin users showed a lower event rate than non-users (p=0.002). In this population, multivariate Cox regression analysis revealed that statin use was independently associated with the primary endpoint (hazard ratio: 0.28 [95% confidence interval: 0.14-0.55]). Statins may exert favorable prognostic effects in PAD patients with highly elevated CRP levels, but not in those with low-to-moderate CRP levels.
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