Why is it important to thin the blood of someone having a heart attack, but not for someone having a stroke? a. strokes are not a cardiovascular disease and are not impacted by blood pressure. b. thinning the blood will cause arteries to relax and allow blood to pass more easily. c. for a stroke, it is necessary to control and stop the bleeding in the brain. d. blood thinners are only useful for treating coronary heart disease.