ASCO (Atherosclerosis, Small vessel disease, Cardiac source, Other cause) is a new of classification of ischemic cerebrovascular diseases. This classification categorizes the data of the patients according to all underlying diseases and allows the clinician to grade the severity of cause (Each of the four phenotypes can be graded 1, 2, or 3). It is suggested to use ASCO classification in large epidemiologic studies but this classification may be used in daily practice. In this study we aimed to analyze the clinical features of patients with ischemic stroke and to investigate results of ASCO classification of these patients and data of 35 patients with ischemic stroke is analyzed. Use of ASCO classification is discussed with the special example cases. Patients' etiology of stroke was classified according to ASCO as known, unknown, completely unknown and unclassifiable group. Percentile of the patients classified as "known" was 71.4% (n = 25), "unknown" was 17.1% (n = 6), "completely unknown" was 5.7% (n = 2) and "unclassifiable group" was 5.7% (n = 2). We think that the ASCO classification which is thought to be more useful in large epidemiologic studies may be used in clinical follow-up period of the stroke patients. Further studies, from different neurology centers and stroke units, are needed to expand our experiences about use of ASCO classification in clinical practice.
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