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Many patients remain unnoticed by earlier silent infections


Sudden cardiac arrest due to previous drowsy heart attack?

Many people who die of sudden cardiac arrest have previously had a quiet heart attack without noticing it, according to a new study.

A recent study by the University of Oulu has shown that many people experience a so-called silent heart attack before they die due to sudden cardiac arrest without notice. The results of the study were published in the English magazine "JAMA Cardiology".

In the case of sudden heart failure, immediate immediate resuscitation should be initiated in order to increase the patient's chances of survival. (Image: spkphotostock /

What is sudden cardiac arrest?

In the study, almost half (42.4%) of people who did not have a previous history of coronary heart disease, but died of sudden cardiac arrest, showed a previous quiet heart attack. Sudden, unexpected loss of the function of the heart leads to loss of breath and consciousness, which often leads to the death of the victim. This sudden cardiac death is most commonly associated with coronary heart disease.

Data from 5,869 people from Northern Finland have been analyzed

A separate study in 2010 showed that 34% of people with sudden cardiac death showed signs of a previous heart attack, but remained unnoticed. The new study analyzed the data of 5,869 people from northern Finland who had a sudden cardiac death between 1998 and 2017. Of these sudden cardiac deaths, 4,392 were due to coronary artery disease, and 3,122 of these cases had no history of coronary heart disease.

How many times was a dumb heart attack?

Having analyzed autopsy and ECG measurements for each case, the researchers found that among 3,122 people who had no coronary artery disease in the past, there were 1322 or 42.4 percent scarring in their hearts. There was a myocardial infarction. Systematic heart attacks occur without knowledge of the person about it.

Further research is needed

However, the study also had certain limitations, including the fact that autopsy data are detected only when scars are detected, but do not collect information on the size of the scar. In addition, symptoms can not be reliably assessed before each death or cardiac arrest, and more work is needed to determine whether similar results have been recorded in other countries. (How)

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  • Juha G. Wahhatalo, Heikki V. Huikuri, Lauri T. Holmström, Tuomas V. Kentta, M. Anett E. Haukilahti, etc.: Association of Quiet Myocardial Infection and Sudden Cardiac Death in Cardiology JAMA JAMA Cardiology

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