21.   And those strokes cannot be prevented by endarterectomy.

22.   Earlier research has shown that the drug is more effective than aspirin in preventing additional strokes in patients whose first stroke stemmed from clots that formed inside the heart.

23.   Estrogen is rarely given solely to prevent strokes, though some earlier reports suggested that it might help do this.

24.   He also pioneered in developing trials in stroke prevention, and led a Canadian study that showed aspirin helps prevent stroke.

25.   It is also given longer term to victims of mini-strokes to help prevent full-blown strokes, especially if they cannot take aspirin.

26.   Strokes can be prevented by keeping blood pressure under control, lowering cholesterol, treating diabetes and stopping smoking.

27.   The Norwegian study was conducted at a time when new drugs are being developed to limit brain damage caused by strokes and prevent additional strokes from occurring.

28.   The operation attempts to prevent strokes by reaming out blockages in the arteries that carry blood to the brain.

29.   They were giving him an oral blood-thinning medicine, Coumadin, to prevent another stroke.