3-1INTRACRANIAL ARTERY STENOSIS PATTERN IN ISCHEMIC STROKE PATIENTS THROUGH TRANSCRANIAL DOPPLER(TCD) IN DR. M. DJAMIL HOSPITAL, PADANG

Abstract

Background: Intracranial artery stenosis is one of significant risk factors in the occurrence of vascular disorders. Intracranial artery stenosis occurs in 33% −50% in stroke patients and 50% in transient ischemic attack patients. Transcranial doppler sonography (TCD) is one of the modalities that can detect intracranial stenosis with 79% sensitivity and 94% specificity. Transcranial doppler sonography can detect stenosis or occlusion of middle cerebral artery (MCA), bifurcatio of Internal Carotid Artery (ICA), anterior cerebral artery (ACA), vertebral arteries (VA), basilar artery (BA), and Posterior Cerebral artery (PCA). According to RSUP DR. M. Djamil medical record data that was obtained in 2018, 35.2% patients experienced intracranial arterial blood vessel disorders based on the results of TCD examination. This study aims to determine the characteristics of intracranial artery stenosis patterns in ischemic stroke patients through TCD examination in RSUP. Dr. M. Djamil Padang. Method: This study was an adescriptive study. The population was ischemic stroke patients in the Neurology Outpatient Clinic of DR. M. Djamil Hospital, Padang, who underwent TCD examination from January 1st to December 30th, 2019, with an evaluation of mean flow velocity (MFV). Results: In this study, there were 192 subjects; 57.29% of subjects were male. The most dominant age range was 51–60 years (30.21%). There were 55.73% of subjects with normal TCD results, 35.42% with intracranial artery stenosis, and 8.85% with general atherosclerosis. Based on the location, intracranial arteries stenosis was found most often in the Left Middle Cerebral Artery (26.47%), followed by Right Middle Cerebral Artery and Right Vertebral Artery (8.82%). Conclusion: Middle Cerebral Artery (MCA) is the most common location of intracranial arteries stenosis that was found in ischemic stroke patients and predominantly occurred in the left cerebral hemisphere.