Based on Maya’s National Institute of Health Stroke Scale (NIHSS) score, blood pressure and CT Angiography, the ED physician determines that Maya has suffered an ischemic stroke. The stroke may have caused damage to her brain, which is a part of her central nervous system. Fortunately, the doctor was able to administer tissue plasminogen activator (tPA) to try to break up the clot. However, she is not responding very well so the decision has been made to perform surgery.