Title:Redefining the Roles of Aspirin across the Spectrum of Cardiovascular
Disease Prevention
Volume: 19
Issue: 6
Author(s): Matthew T. Brown*, Kristina S. Bortfeld, Laurence S. Sperling and Nanette K. Wenger
Affiliation:
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
Keywords:
Aspirin, atherosclerotic cardiovascular disease, coronary artery disease, mechanical heart valves, preeclampsia, primary prevention, secondary prevention.
Abstract: Even before its role in platelet inhibition was fully characterized in the 1980s, aspirin
had been incorporated into the cardiovascular disease care algorithm. Early trials examining its use in
unstable angina and acute myocardial infarction revealed evidence of its protective role in the secondary
prevention of atherosclerotic cardiovascular disease (ASCVD). Large trials assessing use in the
primary prevention setting and optimal dosing regimens were studied in the late 1990s and early
2000s. As a cornerstone of cardiovascular care, aspirin was incorporated into primary and secondary
ASCVD prevention guidelines in the United States and mechanical heart valve guidelines. However,
in recent years, with significant advances in medical and interventional ASCVD therapies, scrutiny
has been placed on the bleeding profile of aspirin, and guidelines have adapted to new evidence. Updates
in primary prevention guidelines reserve aspirin only for patients at higher ASCVD risk and low
bleeding risk - though questions remain in ASCVD risk assessment as risk-enhancing factors have
proven difficult to incorporate on a population level. New thoughts regarding aspirin use in secondary
prevention - especially with the concomitant use of anticoagulants - have altered recommendations as
additional data accrued. Finally, a recommendation for aspirin and vitamin K antagonists with mechanical
heart valves has been modified. Despite aspirin losing a foothold in cardiovascular care, new
evidence has strengthened claims for its use in women at high risk for preeclampsia.