Predictors of outcome, complications, and recanalization of the solitaire device: A study of 89 cases

Badih Daou, Nohra Chalouhi, Robert M. Starke, Richard Dalyai, Kate Hentschel, Pascal Jabbour, Robert Rosenwasser, Stavropoula I. Tjoumakaris

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


BACKGROUND: The use of mechanical thrombectomy in the management of acute ischemic stroke is becoming increasingly popular. OBJECTIVE: To identify notable factors that affect outcome, revascularization, and complications in patients with acute ischemic stroke treated with the Solitaire Flow Restoration Revascularization device. METHODS: Eighty-nine patients treated with the Solitaire Flow Restoration Revascularization device (ev3/Covidien Vascular Therapies, Irvine, California) were retrospectively analyzed. Three endpoints were considered: revascularization (Thrombolysis In Cerebral Infarction), outcome (modified Rankin Scale score), and complications. Univariate analysis and multivariate logistic regression were conducted to determine significant predictors. RESULTS: The mean time from onset of symptoms to the start of intervention was 6.7 hours. The average procedure length was 58 minutes. The mean NIH Stroke Scale (NIHSS) score was 16 on arrival and 8 at discharge. Of the patients, 6.7% had a symptomatic intracerebral hemorrhage, 16.8% had fatal outcomes within 3 months post-intervention, and 81.4% had a successful recanalization. Thrombus location in the M1 segment of the middle cerebral artery was associated with successful recanalization (thrombolysis in cerebral infarction 2b/3) (P .003). Of the patients, 56.6% had a favorable outcome (modified Rankin Scale score at 3 months: 0-2). In patients younger than 80 years of age, 66.7% had favorable outcome. Increasing age (P .01) and NIHSS score (P .002) were significant predictors of a poor outcome. On multivariate analysis, NIHSS score on admission (P .05) was a predictor of complications. On univariate analysis, increasing NIHSS score from admission to 24 hours after the procedure (P .05) and then to discharge (P .04) was a predictor of complications. Thrombus location in the posterior circulation (P .04) and increasing NIHSS score (P .04) predicted mortality. CONCLUSION: The Solitaire device is safe and effective in achieving successful recanalization after acute ischemic stroke. Important factors to consider include age, NIHSS score, and location. ABBREVIATIONS: FR, flow restoration ivTPA, intravenous tissue plasminogen activator MCA, middle cerebral artery mRS, modified Rankin Scale NIHSS, NIH Stroke Scale OR, odds ratio TICI, Thrombolysis In Cerebral Infarction TPA, tissue plasminogen activator.

Original languageEnglish (US)
Pages (from-to)355-360
Number of pages6
Issue number3
StatePublished - Sep 19 2015
Externally publishedYes


  • Mechanical thrombectomy
  • Solitaire
  • Stroke

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology


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