A method being developed by Finnish scientists aims to detect early subtle signs that could lead to sudden cardiac death (SCD).
According to Science Alert, millions of people worldwide die each year due to sudden cardiac death, which refers to unexpected deaths caused by the heart suddenly stopping. However, early signs of heart disease are often very difficult to detect.
To address this, researchers from Tampere University in Finland have created a new algorithm that utilizes a specific metric known as Detrended Fluctuation Analysis (DFA2 α1) to predict and prevent these sudden deaths.
Heart issues are a common cause of sudden death – (AI Photo: Anh Thư).
A total of 2,794 adults were monitored using personal measurement devices that recorded subtle variations in heart rhythm during both resting and active states, including strenuous activities.
The results indicate that DFA2 α1 is a strong and independent predictor of sudden cardiac death.
According to a paper published in the journal JACC: Clinical Electrophysiology, after an average follow-up period of 8.3 years, a DFA2 α1 value of less than 1 unit increased the risk of sudden cardiac death by 2.4 times compared to individuals without this risk.
Interestingly, contrary to initial expectations, the strongest predictive signals were found when the body was at rest rather than during physical activity.
“The heart rate characteristics of patients at high risk while at rest resemble the heart rate of healthy individuals during exertion,” stated co-author Teemu Pukkila.
This new algorithm predicts with significantly greater accuracy compared to current methods.
Furthermore, one of the most intriguing aspects of the study is that the device used to monitor and assess heart rate characteristics provided to participants can easily be integrated into smartwatches.
Predicting the risk of sudden death or other serious events does not equate to a “death sentence.” In cardiovascular diseases, as well as many other conditions, early identification of risk allows patients to prepare, address related issues, and make lifestyle changes to avert the anticipated danger.
