Simvastatin attenuates axonal injury after experimental traumatic brain injury and promotes neurite outgrowth of primary cortical neurons Oct. 2012
Effects of Statin Intensity and Adherence on the Long-Term Prognosis After Acute Ischemic Stroke
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Abstract
Background and Purpose—Statin
is an established treatment for secondary prevention after ischemic
stroke. However, the effects of statin intensity and adherence on the
long-term prognosis after acute stroke are not well known.
Methods—This
retrospective cohort study using a nationwide health insurance claim
data in South Korea included patients admitted with acute ischemic
stroke between 2002 and 2012. Statin adherence and intensity were
determined from the prescription data for a period of 1 year after the
index stroke. The primary outcome was a composite of recurrent stroke,
myocardial infarction, and all-cause mortality. We performed
multivariate Cox proportional regression analyses.
Results—We
included 8001 patients with acute ischemic stroke. During the mean
follow-up period of 4.69±2.72 years, 2284 patients developed a primary
outcome. Compared with patients with no statin, adjusted hazard ratios
(95% confidence interval) were 0.74 (0.64–0.84) for good adherence, 0.93
(0.79–1.09) for intermediate adherence, and 1.07 (0.95–1.20) for poor
adherence to statin. Among the 1712 patients with good adherence, risk
of adverse events was lower in patients with high-intensity statin
(adjusted hazard ratio [95% confidence interval], 0.48 [0.24–0.96])
compared with those with low-intensity statin. Neither good adherence
nor high intensity of statin was associated with an increased risk of
hemorrhagic stroke.
Conclusions—After
acute ischemic stroke, high-intensity statin therapy with good
adherence was significantly associated with a lower risk of adverse
events.
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