Utilization of triple antithrombotic therapy in patients with atrial fibrillation undergoing percutaneous coronary intervention

Comparative safety review of antithrombotic treatment options for patients with atrial fibrillation undergoing percutaneous coronary intervention

INTRODUCTION

Balancing antithrombotic therapy for atrial fibrillation (AF) patients undergoing percutaneous coronary intervention (PCI) remains a clinical challenge due to coexisting thrombogenic risks. This review emphasizes the delicate balance required to prevent ischemic events while minimizing bleeding complications, particularly in the context of risk assessment.

AREAS COVERED

This review spans from 2010 to October 2023, exploring the complexities of antithrombotic management for AF patients undergoing PCI. It stresses the need for personalized treatment decisions to optimize antithrombotic therapies effectively.

EXPERT OPINION

The evolving evidence supports double antithrombotic therapy (DAT) over triple antithrombotic therapy (TAT) for these patients, showcasing a more favorable safety profile without compromising efficacy. Non-vitamin K antagonist oral anticoagulant (NOAC)-based DAT strategies exhibit superiority in reducing major bleeding events while effectively preventing ischemic events. Recommendations from the 2023 European Society of Cardiology (ESC) Guidelines advocate for NOAC-based DAT post-PCI, endorsing safer antithrombotic profiles.Challenges persist for specific patient categories requiring both oral anticoagulants and antiplatelets, necessitating personalized approaches. Future advances in intravascular imaging and novel coronary stent technologies offer promising avenues to optimize outcomes and influence antithrombotic strategies in AF-PCI patients.

Implications of bleeding on subsequent cardiovascular events in patients with atrial fibrillation after acute coronary syndrome or PCI

INTRODUCTION

The association between bleeding and subsequent major adverse cardiac and cerebrovascular events (MACCE) remains poorly characterized. We aimed to evaluate the impact of hemorrhagic events in patients with atrial fibrillation (AF) and acute coronary syndrome (ACS) or undergoing percutaneous coronary intervention (PCI).

MATERIALS AND METHODS

A total of 1877 consecutive patients with AF and ACS or undergoing PCI were prospectively recruited. The primary endpoint was MACCE, including all-cause death, myocardial infarction, ischemic stroke, systemic embolism or ischemia-driven revascularization during follow-up. Post-discharge bleeding was graded according to TIMI criteria. Associations between bleeding and subsequent MACCE were examined using time-dependent multivariate Cox regression after adjusting for baseline covariates and the time from bleeding.

RESULTS

During a median follow-up of 34.2 months, 341 (18.2 %) had TIMI major or minor bleeding events, of whom 86 (25.2 %) also experienced MACCE. The risk of MACCE was significantly higher in patients with bleeding than those without (8.85 % versus 6.99 % per patient-year; HR, 1.568, 95 % CI, 1.232-1.994). In patients who had both bleeding and MACCE, 65.1 % (56 of 86) bleeding events occurred first. Temporal gradients in MACCE risk after major bleeding was highest within 30 days (HRadj, 23.877; 95 % CI, 12.810-44.506) and remained significant beyond 1 year (HRadj, 3.640; 95 % CI, 1.278-10.366). Minor bleeding was associated with increased risk of MACCE within 1 year.

CONCLUSIONS

In patients with AF and ACS or PCI, major and minor bleeding were associated with subsequent MACCE with time-dependency. Our findings may aid in better defining net clinical benefit of optimal antithrombotic therapy.