脳梗塞および一過性脳虚血発作発症例のHITS予測因子に関する検討
Predictive Factors of High Intensity Transient Signals in Patients with Cerebral Ischemia

Yumiko YAMAOKA, Kyoko ASAOKA, Shunsaku HIRAI
2006 Neurosonology  
Method : To elucidate the predictive factors of high intensity transient signals HITS , we analyzed patients with cerebral infarction or transient ischemic attack TIA . We performed transcranial Doppler monitoring from the middle cerebral artery MCA or basilar artery for min. Results : HITS were detected in of patients with cereberal infarction, and in of patients with TIA. Overall HITS prevalence was . Multivariate logistic regression analysis revealed that only the infarct TIA subtype was a
more » ... TIA subtype was a significant predictive factor of HITS p , and that neither age, sex, TIA, high intensity signals HIS found on diffusion-weighted MR imaging DWI , risk factors for atherosclerosis, the timing of HITS detection, nor medication was significantly linked to HITS. Among the infarct TIA subtypes, HITS were detected more frequently in patients with hemodynamic arteriogenic embolic ischemia caused by stenosis in the carotid artery or MCA than in those with cardiogenic embolic and intracranial thrombotic ischemia. Affected patients were significantly young, and cortical subcortical spotty HIS found on DWI were more frequent in the HITS-positive group. Conclusion : Cerebral ischemia of the hemodynamic arteriogenic embolic subtype, an age of yr, and cortical subcortical spotty HIS found on DWI may be predictive factors of HITS. Reprint request NTT
doi:10.2301/neurosonology.19.70 fatcat:uaajollqfbgizpbxdqfumve5uq