A heart attack - The Curius Incident of the Dog in the Night-Time. - Mark Haddon
A heart attack is when some of the muscles in the heart stop getting blood and die. There are two types of heart attack. The first is an embolism. That is when a blood clot blocks one of the blood vessels taking blood to the muscles in the heart. The other one is an aneurysm and that is when a blood vessel breaks and the blood doesn't get to the heart muscles because it is leaking.
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