Family history of sudden cardiac death. The other major warning sign is a family history of unexplained deaths before the age of 50.
有心脏猝死的家庭病史:另一个主要的警告信号则是有50岁以下的人猝死的家庭病史。
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Shortness of breath or chest pain may also be a sign that you're at risk of sudden cardiac death, but these are rare and may be a sign of other health problems in young people, such as asthma.