Journal
PHARMACOTHERAPY
Volume 37, Issue 10, Pages 1322-1327Publisher
WILEY
DOI: 10.1002/phar.2018
Keywords
Acute coronary syndrome; diabetes mellitus; chronic kidney disease; antiplatelet treatment
Categories
Funding
- Division of Pharmacoepidemiology and Pharmacoeconomics
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STUDY OBJECTIVE To describe contemporary trends of P2Y12 inhibitor use in patients with acute coronary syndrome (ACS) and comorbid diabetes mellitus (DM) and/or chronic kidney disease (CKD) who have a higher risk of recurring ACS and may benefit from treatment with higher efficacy third-generation agents (prasugrel and ticagrelor). DESIGN Observational cohort study. SETTING A large U.S. commercial insurance program (2009-2015). PATIENTS P2Y12 inhibitor initiated within 2 weeks after an ACS event. MEASUREMENTS AND MAIN RESULTS We identified 98,649 P2Y12 inhibitor initiators, of whom 24.5% had comorbid DM (no CKD), 10.5% had CKD (no DM), and 12.6% had DM and CKD. Overall, 85.2% of patients initiated clopidogrel, followed by prasugrel (11.6%) and ticagrelor (3.2%). Prasugrel use decreased over time irrespective of preexisting DM and/or CKD; ticagrelor use increased. In logistic regression models accounting for patient demographics and clinical covariates, preexisting DM alone was not associated with prasugrel or ticagrelor versus clopidogrel treatment initiation; however, having CKD with or without DM significantly reduced the likelihood of receiving prasugrel versus clopidogrel (odds ratio [OR] 0.81, 95% confidence interval [CI] 0.74-0.88 for CKD alone; OR 0.91, 95% CI 0.83-0.98 for DM and CKD). Comorbid DM and CKD reduced the odds of initiating ticagrelor versus clopidogrel (OR 0.80, 95% CI 0.70-0.92). PRINCIPAL CONCLUSIONS We observed lower or similar use of prasugrel and ticagrelor compared with clopidogrel in patients with ACS and comorbid DM and/or CKD. Given the potential for worse clinical outcomes with clopidogrel in these patients, our findings highlight the need to investigate the implications of these trends on recurrent ACS and bleeding events.
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