Rapid formation of cerebral microbleeds after carotid artery stenting.

Cerebrovascular Diseases Extra
Kousuke KakumotoJun-Ichi Kira

Abstract

Recent studies reported that cerebral microbleeds (CMBs), i.e. small areas of signal loss on T(2)*-weighted gradient-echo (GE) imaging, could develop rapidly after acute ischemic stroke. We hypothesized that CMBs rapidly emerge after carotid artery stenting (CAS). We investigated the frequency of and predisposing factors for CMBs after CAS. We retrospectively examined MRI before and after CAS in 88 consecutive patients (average age: 71.7 ± 7.2 years, average rates of carotid stenosis: 72.6 ± 12.8%) who underwent CAS for carotid artery stenosis between March 1, 2009, and September 30, 2010. We defined new CMBs as signal losses that newly appeared on the follow-up GE. We examined the association of new CMBs with demographics, risk factors, and baseline MBs. Among 88 patients, 18 (20.5%) had CMBs initially, and 7 (8.0%) developed new CMBs right after CAS. New CMBs appeared on the same side of CAS in all of the 7 patients. New CMBs appeared significantly more frequently in the CMB-positive group than in the CMB-negative one (22% vs. 4%, p = 0.03) on the pre-CAS MRI. Multivariate analysis also revealed that the presence of CMBs before CAS was an independent predictor of new development of CMBs after CAS (odds ratio: 8.09, 95% confid...Continue Reading

Citations

Aug 28, 2015·International Journal of Stroke : Official Journal of the International Stroke Society·Jason MackeyChelsea S Kidwell
Feb 13, 2013·Epilepsia·Sang-Beom JeonJan Claassen
Oct 17, 2020·NMC Case Report Journal·Tomoyuki KishimotoHidenori Suzuki
Jun 17, 2019·Cerebrovascular Diseases Extra·Ai Ogawa ItoHidekazu Tomimoto

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