Recanalization therapy for internal carotid artery occlusion presenting as acute ischemic stroke

Jeong Ho Hong, Jihoon Kang, Min Uk Jang, Beom Joon Kim, Moon Ku Han, Tai Hwan Park, Sang Soon Park, Kyung Bok Lee, Byung Chul Lee, Kyung Ho Yu, Mi Sun Oh, Jae Kwan Cha, Dae Hyun Kim, Jun Lee, Soo Joo Lee, Youngchai Ko, Jong Moo Park, Kyusik Kang, Yong Jin Cho, Keun Sik HongKi Hyun Cho, Joon Tae Kim, Juneyoung Lee, Ji Sung Lee, Hee Joon Bae

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Background We aimed to describe the current status and clinical outcomes of recanalization therapy for internal carotid artery occlusion (ICAO) presenting as acute ischemic stroke.

Methods Using a nationwide stroke registry database in Korea, we identified consecutive ischemic stroke patients with ICAO hospitalized within 12 hours of onset between March 2010 and November 2011.

Results ICAO accounted for 10.6% (322 of 3028) of acute ischemic strokes within 12 hours of onset. Among the 322 ICAO patients, 53% underwent recanalization therapy, 41% intravenous thrombolysis (IVT) alone, and 59% endovascular treatment (EVT). Twenty-two percent of those with mild deficits (National Institutes of Health Stroke Scale <4) and 50% of those 80 years of age or more received recanalization therapy. Compared with no treatment, recanalization therapy was not significantly associated with a favorable outcome (3-month modified Rankin scale, 0-2) (adjusted odds ratio [OR], 1.77; 95% confidence interval [CI],.80-3.91; P =.16). However, compared with IVT, EVT significantly improved the odds of favorable outcome (OR, 2.86; 95% CI, 1.19-6.88; P =.02) without significant increase of symptomatic intracranial hemorrhage (OR, 2.18; 95% CI,.42-11.43; P =.36) and 3-month mortality (OR,.53; 95% CI,.23-1.18; P =.12). Successful recanalization rate (Thrombolysis in Cerebral Infarction <2a) by EVT was 76%.

Conclusions In Korea, one tenth of acute ischemic stroke was caused by ICAO, and about 50% were treated by recanalization therapy. EVT was widely used as a recanalization modality (about 60% of cases) despite lack of evidence. However, its effectiveness and safety were acceptable.

Original languageEnglish
Pages (from-to)2183-2189
Number of pages7
JournalJournal of Stroke and Cerebrovascular Diseases
Issue number8
Publication statusPublished - 2014 Sept 1
Externally publishedYes

Bibliographical note

Funding Information:
This study was supported by a grant of the Korea Healthcare technology R&D Project, Ministry of Health and Welfare, Republic of Korea . ( HI10C2020 ).

Publisher Copyright:
© 2014 National Stroke Association.


  • Endovascular recanalization
  • acute stroke
  • carotid artery
  • revascularization
  • thrombolysis

ASJC Scopus subject areas

  • Surgery
  • Rehabilitation
  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine


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