Many sudden cardiac deaths linked to prior silent heart attacks, study says

(CNN)Many people who die of sudden cardiac arrest may have had a heart attack earlier in life without ever realizing it, according to a new study. A separate study, published in the American Heart Journal in 2010, found that some 34% of people who had sudden cardiac death showed signs of a previous heart attack that went undetected. Those deaths were evaluated in Minneapolis from 2001 to 2004. The new study involved analyzing data on 5,869 people in Northern Finland who had sudden cardiac deaths between 1998 and 2017. The…

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