The Correlation Between Oxfordshire Community Stroke Project Classification And Characteristics Of Carotid Artery Diseases In Ischemic Stroke

Object:To describe the incidence of extracranial carotid artery stenosis and to establish the type of arteral plaques; and to make a discussion of the relationship between pathology of extracranial carotid artery in ischemic stroke and the classification Oxfordshire Community Stroke Project (OCSP).Materials and Methods:From Jan.1,2008 to Dec.31,2009 in First Affiliated Hospital of Zhengzhou University, Department of Neurology, the patients of consecutive with ischemic stroke admitted to hospital were registered, and by neck Color Doppler ultrasound the degree of carotid stenosis and the characteristics of atherosclerotic plaque were recorded.Results:There were 854 ischemic stroke patients were registered in two years; among the patients,675 cases (79%) underwent carotid ultrasonography examination. According to the diagnostic definition of OCSP, the composition of ischemic stroke subtype was noted as follows:32.7% were patients with partial anterior circulation infarcts,23.0% with total anterior circulation infarcts,18.2% withr posterior circulation infarcts and 26.1% with lacunar infarcts. There were 215 cases with extracranial carotid artery stenosis (31.9%), there were 93 cases (13.8%) with carotid artery stenosis≧50% including occlusion.515 carotid plaques were found in 386 cases (57.2%), Composed of 263 unstable plaque (51.0%). Carotid plaques were commonly detected most in the carotid bifurcation (61.5%,317/515). Among OCSP subtypes, the propotion of severe carotid artery stenosis was the highest in PACI patients and the propotion of moderate carotid artery stenosis and unstable plaque were the highest in TACI patients(P<0.05).Conclusions:Ischemic stroke patients with carotid artery disease is common, the carotid artery disease is different among OCSP subtypes, The type can be used to predict severe carotid artery stenosis.