Peterson Sawyer is a 72-year-old man who presents to the emergency department with acute onset of right-sided weakness. Peterson was eating breakfast when he suddenly lost strength on the right side of his body such that he was unable to move his right arm or leg. Peterson also noted a loss of sensation in the right arm and leg and difficulty speaking. His wife called 911, and he was brought to the emergency department. His medical history is remarkable for long-standing hypertension, hypercholesterolemia, and recently diagnosed coronary artery disease. On physical examination, his blood pressure is 190/100 mm Hg. Neurologic examination is notable for right facial droop and a dense right hemiparesis. A Babinski reflex is present on the right. CT scan of the brain shows no evidence of hemorrhage. Peterson is admitted to the neurologic ICU.
What is the most likely diagnosis for Peterson?