Introduction
Stroke is the second most prevalent illness that causes death and disability globally.
1 Statins can effectively lower the occurrence and recurrence risk of stroke,
2,3 and statin pretreatment is related to better neurological function and prognosis in patients with acute ischemic stroke.
4,5
Previous
studies were mostly conducted in western countries and whether evidence
could be applied to Asian patients remains uncertain. In western
countries, high-dose statins are usually prescribed and recommended in
guidelines,
6
whereas in Asian countries, low-dose statins are mostly used in clinic
practice. Statins can lower low-density lipoprotein (LDL-C) values and
their efficacy is dose dependent;
3 however, it is uncertain whether the effects of low-dose statins are comparable with those of high-dose statins.
At
present, low-dose statins are used for the prevention of stroke. The
MEGA study revealed that low-dose pravastatin is nonsignificantly
related to the incidence of stroke among Japanese.
7 The J-STARS study indicated that low-dose pravastatin reduced the recurrence of atherothrombotic stroke in Japanese patients.
8
Our previous retrospective study showed that stroke patients pretreated
with low-dose statin in western China had better functional outcomes
and prognosis for primary prevention.
9
However, the retrospective study design could not contain data on all
risk factors, which may cause bias for statistical results. Further, the
study did not include recurrent stroke patients. Therefore, whether
low-dose statins exert effects on the functional outcomes of recurrent
ischemic stroke patients is uncertain.
The present study
investigated the relationship between low-dose statin pretreatment and
prognosis for recurrent ischemic stroke patients, and explored whether
different risk factors could affect the effects of statins in Asian
patients with recurrent stroke.
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