Prognostic Implications of Supraventricular Arrhythmias
Tove Hygrell1, Martin Stridh2, Leif Friberg1
1Department of Clinical Sciences, Karolinska Institutet, Danderyd University Hospital, Stockholm, Sweden.
The American Journal of Cardiology
|June 25, 2021
Summary
Frequent supraventricular arrhythmias, especially those resembling atrial fibrillation (AF), predict future AF development and increased mortality risk. Early detection and screening in individuals with frequent supraventricular activity are recommended.
Area of Science:
- Cardiology
- Electrophysiology
- Public Health
Background:
- Atrial fibrillation (AF) is a common arrhythmia with significant health implications.
- Understanding the progression of supraventricular arrhythmias is crucial for early detection and prevention strategies.
Purpose of the Study:
- To determine the prevalence of progressive supraventricular arrhythmias.
- To investigate the prognostic value of these arrhythmias for developing AF, stroke, and death.
Main Methods:
- Utilized ECG data from the STROKESTOP I mass-screening study of 75- and 76-year-olds.
- Employed an automated algorithm followed by manual review to detect supraventricular arrhythmias.
- Followed participants for a median of 4.2 years, linking to national patient registers for AF, stroke, and death data.
Main Results:
- 85% of 6,100 participants were free of significant supraventricular arrhythmia.
- Frequent supraventricular ectopic complexes were most common (11.6%).
- Individuals with 'micro-AF' (irregular, p-wave lacking tachycardias) showed the highest risk of developing AF (HR 4.3) and death (HR 2.0).
Conclusions:
- Progression of atrial arrhythmias from ectopic beats to AF-like patterns is linked to future AF development.
- Individuals with frequent supraventricular activity, particularly those with AF-like tachycardias, warrant consideration for extended AF screening.
- These findings support proactive arrhythmia monitoring for improved cardiovascular outcomes.
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