Clinical outcomes according to lesion complexity in high bleeding risk patients treated with 1-month dual antiplatelet therapy following PCI: Analysis from the Onyx ONE clear study.

Kandzari, David E; Kirtane, Ajay J; Mehran, Roxana; Price, Matthew J; Simon, Daniel I; Latib, Azeem; Kedhi, Elvin; Abizaid, Alexandre; Worthley, Stephen G; Zaman, Azfar; Hudec, Martin; Stoler, Robert; Choi, James W; Kanitkar, Mihir; Conradie, Andre; Tam, Chor-Cheung Frankie; Walton, Antony; Gruberg, Luis; Ando, Kenji; Lee, Lilian C; ... (2022). Clinical outcomes according to lesion complexity in high bleeding risk patients treated with 1-month dual antiplatelet therapy following PCI: Analysis from the Onyx ONE clear study. Catheterization and cardiovascular interventions, 99(3), pp. 583-592. Wiley-Blackwell 10.1002/ccd.29939

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OBJECTIVES

To compare clinical outcomes in high bleeding risk (HBR) patients with and without complex percutaneous coronary intervention (PCI) treated with Resolute Onyx zotarolimus-eluting stents (ZES) after 1-month dual antiplatelet therapy (DAPT).

BACKGROUND

PCI with 1-month DAPT has been demonstrated to be safe in HBR patients treated with Resolute Onyx ZES. Whether these outcomes are consistent in patients with complex lesions is uncertain.

METHODS

Among HBR patients who were event-free 1 month after PCI with ZES and treated thereafter with single antiplatelet therapy (SAPT), the clinical outcomes between 1 month and 1 year were compared after complex PCI (3 vessels treated, ≥ 3 lesions treated, total stent length > 60 mm, bifurcation with ≥ 2 stents implanted, atherectomy, or left main, surgical bypass graft or chronic total occlusion PCI) versus noncomplex PCI. Propensity score adjustment was performed to adjust for baseline differences among complex and noncomplex patients.

RESULTS

Complex patients (N = 401, 26.6% of total) had a higher prevalence of hyperlipidemia, diabetes mellitus and previous myocardial infarction (MI). Between 1 month and 1 year, rates of MI (7.1% vs. 4.0%, p = 0.02) and cardiac death/MI (9.3% vs. 6.1%, p = 0.04) were higher among complex versus noncomplex patients, although stent thrombosis rates were similar. After adjustment for baseline characteristics, differences in outcomes were no longer significant between groups.

CONCLUSIONS

Higher rates of ischemic outcomes in complex PCI patients were largely explained by baseline clinical differences, rather than lesion complexity, among HBR patients treated with 1-month DAPT following PCI with Resolute Onyx ZES.

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