(101-199 mg) and high (more than 200 mg). A total of 2,658 patients with ACS undergoing PCI were divided according to the most commonly used dose, and each dose group was evaluated for event rates relating to cardiovascular (CV) death, MI (heart attack) or stroke as well as major bleeding.
The researchers found similar rates of CV death, MI or stroke in all of the aspirin dose groups at 30 days and 8 months. While the incidence of major bleeding was not significantly different between the groups at 30 days, the rate of major bleeding was noticeably reduced with low-dose aspirin after 8 months, an important factor in the practice of aspirin dosing for patients in this population.
"In this large observational analysis, low-dose ASA appeared to be just as effective as high-dose ASA in preventing recurrent cardiac events in ACS patients after PCI, while reducing the long-term risk of major bleeding," said Sanjit Jolly, of Hamilton Health Sciences and lead author of the trial. "These data are intriguing, since low-dose aspirin is most commonly prescribed in Europe, but in the United States, higher doses are most commonly used. Our data suggest that lower doses may be safer, but this finding needs confirmation in a dedicated randomized trial," said Shamir R. Mehta, M.D., Associate Professor of Medicine at McMaster University and study principal investigator.
As we continue to make progress in the area of cardiovascular medicine, including new technologies, better therapies and ultimately improved patient survival, researchers are taking a look back to determine the major factors that have contributed to growing survival rates in cardiovascular patients. This large observational study conducted by researchers from Brigham and Womens Hospital in Boston suggests the value of the use of maintenance therapies, and in particular, the increasing use of statins, beta-blockers (BB), and angiotensin-converting enzyme-inhibitors (ACEI) or an
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