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Coronary atherectomy is associated with improved procedural and clinical outcomes among patients with calcified coronary lesions: Insights from the VA CART program.
OBJECTIVES: We sought to evaluate the prevalence of calcified coronary lesions and the association between the use of atherectomy and clinical outcomes.
BACKGROUND: Calcified coronary arteries are associated with an increased risk of procedural complications during percutaneous coronary intervention (PCI). The outcomes of coronary atherectomy for adjunctive treatment of calcified coronary lesions are not well described.
METHODS: We identified all patients treated for calcified coronary lesions at VA hospitals. A propensity weighted cohort was created for those treated with or without adjunctive atherectomy to evaluate the complications and outcomes between groups.
RESULTS: From 2007 to 2015, 9,719 patients underwent single-vessel PCI for treatment of naïve native calcific coronary lesions. The proportion of patients undergoing revascularization of calcified lesions increased over the study period (P = 0.03) and 1,731 patients (18%) were treated with atherectomy. Adjunctive atherectomy was more likely to be used in high-risk lesions (76.5% vs. 46.8%, P < 0.001). After propensity weighting, coronary atherectomy was associated with a 38% decrease in the odds of procedural complications and a 54% decrease in the odds of clinical complications (both P = 0.005). There was no difference in rates of 2-year death (HR: 1.07; 95% CI: 0.92-1.24), myocardial infarction (HR: 0.96; 95% CI: 0.75-1.23) or target vessel revascularization (HR: 0.96; 95% CI: 0.78-1.19) CONCLUSIONS: Percutaneous treatment of calcified coronary lesions has increased over time. The adjunctive use of coronary atherectomy was associated with a reduction in procedural complications among patients with calcified coronary arteries. Two-year TVR, MI and overall mortality were similar between the two groups.
BACKGROUND: Calcified coronary arteries are associated with an increased risk of procedural complications during percutaneous coronary intervention (PCI). The outcomes of coronary atherectomy for adjunctive treatment of calcified coronary lesions are not well described.
METHODS: We identified all patients treated for calcified coronary lesions at VA hospitals. A propensity weighted cohort was created for those treated with or without adjunctive atherectomy to evaluate the complications and outcomes between groups.
RESULTS: From 2007 to 2015, 9,719 patients underwent single-vessel PCI for treatment of naïve native calcific coronary lesions. The proportion of patients undergoing revascularization of calcified lesions increased over the study period (P = 0.03) and 1,731 patients (18%) were treated with atherectomy. Adjunctive atherectomy was more likely to be used in high-risk lesions (76.5% vs. 46.8%, P < 0.001). After propensity weighting, coronary atherectomy was associated with a 38% decrease in the odds of procedural complications and a 54% decrease in the odds of clinical complications (both P = 0.005). There was no difference in rates of 2-year death (HR: 1.07; 95% CI: 0.92-1.24), myocardial infarction (HR: 0.96; 95% CI: 0.75-1.23) or target vessel revascularization (HR: 0.96; 95% CI: 0.78-1.19) CONCLUSIONS: Percutaneous treatment of calcified coronary lesions has increased over time. The adjunctive use of coronary atherectomy was associated with a reduction in procedural complications among patients with calcified coronary arteries. Two-year TVR, MI and overall mortality were similar between the two groups.
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