- National Institute of Health Stroke Scale (NIH-SS) total score 8 to 23 with a motor deficit >/= 2 (for either one arm or leg) and level of consciousness < 2 and at least one of the following: Visual field deficit, neglect, or aphasia. If a patient receives t-PA, NIH-SS must be performed prior to receiving the study drug but after infusion of t-PA is initiated.