About a month ago, TV broadcasting icon Walter Cronkite, 92, was reported to be “gravely ill”and not expected to recuperate, but no other information about his condition is available at this time. He died today and we now know that it was due to cerebrovascular disease or stroke. In the United States more than 700,000 people suffer a stroke each year, and approximately two-thirds of these individuals survive and require rehabilitation.
Left: An ischemic stroke occurs when a blood vessel supplying the brain becomes blocked, as by a clot.
Right: A hemorrhagic stroke occurs when a blood vessel bursts, leaking blood into the brain.