Published Online
on October 24, 2002

A more recent version of this article appeared on December 1, 2002

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Submitted on June 19, 2002
Accepted on July 10, 2002

Analysis of the Safety and Efficacy of Intra-Arterial Thrombolytic Therapy in Ischemic Stroke

Rejane C. Lisboa MD; Borko D. Jovanovic PhD; and Mark J. Alberts MD^*

From the Departments of Neurology (R.C.L., M.J.A.) and Preventive Medicine (B.D.J.), Northwestern University Medical School, Chicago, Ill.

^* To whom correspondence should be addressed. E-mail: m-alberts{at}northwestern.edu.

Background and Purpose—Intra-arterial thrombolytic therapy (IAT) may be a treatment option for patients with ischemic stroke. We analyzed the safety and efficacy of IAT on the basis of published data.

Methods—We searched computerized databases for studies using IAT in 10 patients with ischemic stroke. Some studies had control patients for comparison. Data were collected on age, stroke territory, time to treatment, medication, site of arterial occlusion and recanalization on angiogram, outcomes, and symptomatic intracranial hemorrhage (SICH).

Results—The analysis included 27 studies with 852 patients who received IAT and 100 control subjects. There were more favorable outcomes in the IAT than in the control group (41.5% versus 23%, P=0.002), with a lower mortality rate for IAT (IAT, 27.2%; control group, 40%, P=0.004). The IAT group had an odds ratio of 2.4 (95% CI, 1.45 to 3.85) for favorable outcome. SICH was more frequent in the IAT group compared with the control group (9.5% versus 3%, P=0.046). The subgroup of patients receiving a combination of intravenous thrombolytic therapy and IAT had more favorable outcomes than the IAT alone subgroup, but this trend did not reach statistical significance (53.6% versus 41.5%, P=0.1). Among the patients treated with IAT, those who had supratentorial strokes were more likely to have favorable outcomes than those with infratentorial strokes (42.2% versus 25.6%; P=0.001; odds ratio, 2.0; 95% CI, 1.33 to 3.0).

Conclusions—IAT for ischemic stroke appears efficacious but carries an increased risk of SICH. Further prospective studies are needed to prove the safety and efficacy of IAT in stroke.

Key words: stroke, ischemic • thrombolytic therapy

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