Key result
Having vascular risk factors was associated with a 12.6% prevalence of asymptomatic middle cerebral artery stenosis, escalating from 7.2% with one risk factor to 29.6% with four.
Cross-Sectional (n=3,057)
Asymptomatic middle cerebral artery stenosis is common in patients with vascular risk factors, and its prevalence increases significantly with the accumulation of multiple risk factors.
We used transcranial Doppler to screen 3,057 patients who had at least one vascular risk factor of hypertension, diabetes, or hyperlipidemia and found 385 (12.6%) had middle cerebral artery stenosis. Elderly, hypertension, diabetes, and hyperlipidemia were associated factors. The prevalence escalated quadratically with increasing number of associated factors: from 7.2% for one, to 29.6% for four associated factors. Asymptomatic middle cerebral artery stenosis is common in patients with vascular risk factors.
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Wong et al. (2007) conducted a cross-sectional in Asymptomatic intracranial atherosclerosis (n=3,057). Vascular risk factors was evaluated on Middle cerebral artery stenosis. Having vascular risk factors was associated with a 12.6% prevalence of asymptomatic middle cerebral artery stenosis, escalating from 7.2% with one risk factor to 29.6% with four.
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