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(Stroke. 2001;32:2137.)
© 2001 American Heart Association, Inc.

Original Contributions

Characteristics of Academic Medical Centers and Ischemic Stroke Outcomes

Leslie Allison Gillum, MD S. Claiborne Johnston, MD, MPH

From the Department of Neurology, University of California, San Francisco.

Correspondence to S. Claiborne Johnston, MD, MPH, Department of Neurology, Box 0114, University of California, San Francisco, 505 Parnassus Ave, M-798, San Francisco, CA 94143-0114. E-mail clayj{at}itsa.ucsf.edu

Background and Purpose—— Data supporting the efficacy of stroke center characteristics are limited.

Methods—— A questionnaire detailing stroke treatment practices was sent to 42 academic medical centers in the University Health Systems Consortium. In-hospital mortality of all emergency department admissions for ischemic stroke at these institutions was evaluated in a database of discharge abstracts during 1997–1999. Institutional characteristics were evaluated as predictors of in-hospital mortality after adjustment for age, sex, race, hospital treatment volume of ischemic stroke, and admission status (emergent, urgent, elective). Length of stay (LOS), total hospital charges, and frequency of tissue plasminogen activator (tPA) administration were evaluated as secondary outcomes. We used a multivariable method called generalized estimating equations, which broadens confidence intervals to adjust for clustering of variables at institutions.

Results—— Thirty-two institutions completed the questionnaire, and 29 of these were included in the database of discharge abstracts. In-hospital deaths occurred in 758 (7.0%) of the 10 880 ischemic stroke patients admitted through the emergency department. In-hospital deaths were less frequent at hospitals with a vascular neurologist (odds ratio [OR] 0.51; 95% CI, 0.36 to 0.74; P<0.0001) and at those with guidelines stating that only neurologists could administer tPA (OR, 0.65; 95% CI, 0.49 to 0.88; P=0.004). There was a trend toward fewer deaths at hospitals with a dedicated stroke team available by pager (OR, 0.76; 95% CI, 0.56 to 1.04; P=0.09). The presence of a dedicated neurological intensive care unit, stroke unit, and written clinical pathway for stroke were not significantly associated with in-hospital death. LOS was shorter at hospitals with a vascular neurologist (P=0.01).

Conclusions—— Academic medical centers with a vascular neurologist and those with written guidelines limiting tPA administration to neurologists had lower rates of in-hospital mortality for ischemic stroke patients.

Key Words: delivery of health care,integrated • stroke, acute • stroke, ischemic • stroke management • stroke outcome • stroke unit

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