One-month duration compared with twelve-month duration of dual antiplatelet therapy in elective angioplasty for coronary artery disease: Bleeding and ischaemic outcomes

Natasha Corballis, U. Bhalraam, Ioannis Merinopoulos, Tharusha Gunawardena, Vasiliki Tsampasian, Upul Wickramarachchi, Simon Eccleshall, Vassilios S. Vassiliou

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Abstract

Background/Objectives: The need to determine the safest duration of dual antiplatelet therapy duration after elective angioplasty to reduce bleeding events without an adverse effect on major adverse cardiovascular events (MACE) remains a challenge. Methods: In this investigator-initiated, single-centre cohort study, we identified all patients who underwent PCI for de novo coronary disease for stable angina between January 2015 and November 2019. We compared 1-month and 12-month durations of dual antiplatelet therapy (DAPT) to determine if there was any difference in the primary outcome of major bleeding. The secondary outcome was a patient-oriented composite endpoint of all-cause mortality; any myocardial infarction, stroke, or revascularisation; and the individual components of this composite endpoint. Data were analysed using Cox regression models and cumulative hazard plots. Results: A total of 1025 patients were analysed, of which 340 received 1 month of DAPT and 685 received 12 months of DAPT. There was no difference in major bleeding between the two groups (2.6% vs. 2.5% respectively). On univariable cox regression analysis, no characteristics were predictors of major bleeding. A proportion of 99.7% of patients in the 1-month DAPT arm were treated with a DCB strategy, whilst 93% in the 12-month DAPT group were treated with a DES. There was no difference between the two groups with regards to the composite patient-oriented MACE (11% vs. 12%, respectively) or any individual component of this. These results were unchanged after propensity score matched analysis. Conclusions: A 1-month duration of DAPT, for which 99.7% of patients were treated with a DCB strategy, appears safe and effective when compared with a 12-month duration of DAPT with no difference in major bleeding or MACE.

Original languageEnglish
Article number4521
JournalJournal of Clinical Medicine
Volume13
Issue number15
DOIs
Publication statusPublished - 2 Aug 2024

Keywords

  • bleeding risk
  • DCB only PCI
  • dual antiplatelet therapy
  • elective PCI

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