MSRA-1489

A 70-year-old man presents with sudden onset right-sided weakness and difficulty understanding speech at 9:30 am. It is now 12:15 pm. He has a medical history of hypertension, type 2 diabetes, and hyperlipidemia, and takes lisinopril, metformin, and atorvastatin.

Initial investigations reveal a capillary blood glucose of 5.2 mmol/L (4.0-6.0 mmol/L) and oxygen saturations of 97%. What is the most appropriate next step in his management?