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Effective platelet inhibition prior to elective percutaneous coronary intervention (PCI) reduces the risk of ischemic complications. Newer P2Y12 inhibitors are preferred agents over clopidogrel for patients presenting with acute coronary syndrome. However, the comparative efficacy and safety of them over clopidogrel in elective PCI is unclear. Our objective was to perform a network meta-analysis and assess that from randomized controlled trials (RCT). Methods We conducted a systematic review of RCTs up to and including November 2020. The endpoints of interest were overall mortality, rates of myocardial infarction (MI), stroke, revascularization and major bleeding. Random effects model using frequentist approach was used to perform a network meta-analysis using R software. Results 5 trials with total of 5,194 patients were included in our analysis. For ischemic outcomes including MI, Stroke and revascularization, prasugrel had the most favorable trend. However, clopidogrel had the highest probability of being most effective for major bleeding and all-cause mortality. None of these trends were statistically significant due to lack of power for each individual outcome (Figure 1). Conclusion Prasugrel and ticagrelor seem to show better efficacy in preventing MI and stroke. However, their effects are marginal and do not translate into improved overall mortality and bleeding. Therefore, in this lower risk population presenting for elective PCI, clopidogrel remains a reasonable P2Y12 inhibitor choice in lower risk population. Funding Acknowledgement Type of funding sources: None. Results

Comparing loading strategies of P2Y12 inhibitors in patients undergoing elective PCI: a network meta-analysis