Hypertrophiccardiomyopathy (HCM). This is a disease in which the heart muscle (myocardium) becomes abnormally thick, making it harder for the heart to pump blood.
肥厚性心肌病(HCM)：患了此病，病人心脏的肌肉(心肌)会变得异常肥厚而无法向心脏输血。
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Hypertrophiccardiomyopathy, while usually not fatal in most people, is the most common cause of heart-related sudden death in people under 30.
虽说肥厚性心肌病对大多数人并没有致命的危险，但它却是30岁以下的人发生心脏猝死的主要原因。
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Another option for some, such as those with hypertrophiccardiomyopathy, is an implantable cardioverter-defibrillator (ICD).