this site will help you with information on strokes, such as how to prevent them, and what they are exactly. I'm only a 13 year old boy doing this as a project, so please do not hold me responsibe if the information is not entirely correct
Tuesday, 25 January 2011
A heart defibulator will help restore the natural rhythm of the heart when a person is experiencing cardiac arrest. The heart has a natural defibulator built in that acts much the way a pacemaker does, but as we age it can stop functioning properly (hence the cardiac arrest).