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Original Research[epub]

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Clinical outcomes of atherectomy prior to percutaneous coronary intervention: A comparison of outcomes following rotational versus orbital atherectomy (COAP-PCI study)

jiangxiao Keywords: calcified coronary lesion; orbital atherectomy; percutaneous coronary intervention; rotational atherectomy

BACKGROUND:
Because of the challenges in treating calcified coronary artery disease (CAD), lesion preparation has become increasingly important prior to percutaneous coronary intervention (PCI). Despite growing data for both rotational atherectomy (RA) and orbital atherectomy (OA), there have been no multicenter studies comparing the safety and efficacy of both. We sought to examine the clinical outcomes of patients with calcified CAD who underwent atherectomy.

METHODS:
A total of 39 870 patients from five tertiary care hospitals who had PCI from January 2011 to January 2017 were identified. 907 patients who had RA or OA were included. This multicenter, prospectively collected observational analysis compared OA and RA. The primary end-point was myocardial infarction and safety outcomes including significant dissection, perforation, cardiac tamponade, and vascular complications. Propensity score matching (1:1) was performed to reduce selection bias.

RESULTS:
After matching, 546 patients were included in the final analysis. The primary endpoint, myocardial infarction occurred less frequently with OA compared to RA (6.7% vs 13.8%, P ≤ 0.01) in propensity score matched cohorts. Procedural safety outcomes were comparable between the groups. The secondary outcome of death on discharge occurred less in the OA group as compared with RA (0% vs 2.2%, P = 0.01). Fluoroscopy time was less in patients who were treated with OA (21.9 vs 25.6 min, P ≤ 0.01). Additional secondary outcomes were comparable between groups.

CONCLUSION:
In this non-randomized, multicenter comparison of contemporary atherectomy devices, OA was associated with significantly decreased in-hospital myocardial infarction and mortality after propensity score matching with decreased fluoroscopy time.

© 2018, Wiley Periodicals, Inc.
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