In the not-so-distant future, a 66-year-old man is drinking his morning tea when he suddenly feels his face go numb. His teacup spills to the floor as the hand that was holding it falls limp by his side. His wife enters the room and seems upset, but the man has difficulty understanding what she is saying. He has a pounding headache.
This man may have just had a stroke—a blockage or break in a blood vessel in the brain. If so, the treatment he receives in the next four hours could mean the difference between whether he lives or dies—whether he recovers fully or becomes permanently disabled.