A 58-year-old man is evaluated in the emergency department for a 2-hour history of right-sided weakness. He has hypertension and chronic kidney disease. Medications are amlodipine, lisinopril, and aspirin.

On physical examination, the patient is awake and interactive. Blood pressure is 190/88 mm Hg, pulse rate is 72/min and regular, respiration rate is 16/min, and oxygen saturation is 97% on ambient air. Papilledema is noted. Neurologic examination shows right-sided facial weakness, slurred speech, and absent movement and pinprick sensation in the right arm and leg, but no aphasia.

A CT scan of the head without contrast shows a left thalamic intracerebral hemorrhage.

Results of laboratory studies include a platelet count of 170,000/µL (170 × 109/L), an INR of 0.9, and a serum creatinine level of 1.8 mg/dL (159 µmol/L).

Which of the following is the most appropriate treatment?