Low frequency of renal artery disease in young ischemic stroke patients.
BACKGROUND
The frequency, associated risk factors and associated vascular disorders in renal artery disease have not been studied in young ischemic stroke patients.


METHODS
From February 1999 to June 2006, we retrospectively reviewed a total of 152 younger ischemic stroke patients (< or = 50 y/o). Another 30 older ischemic stroke patients (age > 50 y/o) were randomly selected and studied as controls. All 182 patients received cerebral angiography and concomitant abdominal aortography. The extent of vascular stenosis was calculated for the renal, cerebral and coronary arteries. Vascular risk factors were also studied.


RESULTS
Of the 152 younger patients, seven (4.6%) patients had renal artery disease including two (1.3%) with significant stenosis. There was no association between renal artery disease and vascular risk factors (p > 0.05). Patients with intracranial carotid and coronary artery disease had a significantly higher frequency of renal artery disease (p < 0.05).


CONCLUSIONS
Our results suggest that the frequency of renal artery disease is low in younger ischemic stroke patients. Intracranial carotid and coronary artery disease is associated with renal artery disease.
Stroke Section, Department of Neurology, Chang Gung Memorial Hospital, LinKou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan.
Tai-Cheng
TC
Wu
Tsong-Hai
TH
Lee
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002545:Brain Ischemia / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012077:Renal Artery / Q000473:pathology*; D012078:Renal Artery Obstruction / Q000453:epidemiology*; D012189:Retrospective Studies; D012307:Risk Factors; D020521:Stroke / Q000209:etiology*