Part 2: Ischemic Stroke: Evaluation, Treatment, and Prevention
Matthew Brandon Maas, MD, and Joseph E. Safdieh, MD
Dr. Maas is a fellow in Stroke and Neurocritical Care, Harvard Medical School, Departments of Neurology, Massachusetts General and Brigham and Womens Hospitals, Boston, MA. Dr. Safdieh is an assistant professor of neurology, Department of Neurology and Neuroscience, Weill Medical College of Cornell University, New York, NY.
Emergent noncontrast head computed tomography (CT) scan and CT angiography are performed. The time is currently 6:30 pm. Which piece of clinical data would deter administration of intravenous tissue plasminogen activator (tPA)?