ischemic stroke and transient ischemic
attack are common, and the risk of subsequent
ischemic events is particularly high
during the first 90 days after the index cerebrovascular
event.1-4 Aspirin at a dose of 50 to 325 mg
daily is commonly used in this context.5-7 However,
the benefit of aspirin in the secondary prevention
of ischemic stroke is limited; even with
concurrent aspirin treatment, the rate of recurrent
stroke is 10 to 15% in the first 90 days, and
the rate of new ischemic events when aspirin is
used in the long term is only 22% lower than the
rate associated with no preventive treatment