Real-World Outcomes of Acute Ischemic Stroke Treatment with Intravenous Recombinant Tissue Plasminogen Activator

BACKGROUND AND PURPOSE:

In clinical trials, intravenous (IV) recombinant tissue-type plasminogen activator (rt-PA) reduces the likelihood of disability if given within 3 hours of acute ischemic stroke. This study compared real-world outcomes between patients treated and patients not treated with IV rt-PA.

METHODS:

In this retrospective study, United States-based neurologists randomly selected eligible acute ischemic stroke patients from their charts who were and were not treated with IV rt-PA. Mortality, hospital readmission, and independence were compared between patients treated and patients not treated with IV rt-PA using Kaplan-Meier curves, log-rank tests, and Cox proportional hazards models.

RESULTS:

A total of 1026 charts were reviewed with a median follow-up time of 15.5 months. Pretreatment stroke severity, as measured by the National Institutes of Health Stroke Scale, was comparable between cohorts (IV rt-PA =11.7; non-rt-PA = 11.3; P = .165). IV rt-PA patients experienced significantly longer survival (P = .013), delayed hospital readmission (P = .012), and shorter time to independence (P < .001) compared with patients not treated with rt-pa. after adjusting for baseline characteristics, iv rt-pa patients had significantly lower mortality (hazard ratio [95% confidence interval] =" .52" [.30, .90]) and greater rates of independence (hazard ratio [95% confidence interval] =" 1.42" [1.17, 1.71]) than patients not treated with rt-pa.>

CONCLUSIONS:

This real-world study indicated that acute ischemic stroke patients treated with IV rt-PA experience long-term clinical benefits in survival and functional status.