General cardiovascular risk and functional indicators of the permanent atrial fibrillation

Area of Science:

• Cardiology
• Electrophysiology
• Clinical Research

Background:

• Atrial fibrillation (AF) significantly increases thromboembolic event risk.
• The relationship between general cardiovascular risk (GCVR) and AF characteristics is under-investigated.
• Understanding these links is crucial for managing AF patients.

Purpose of the Study:

• To investigate the association between GCVR and the frequency/forms of AF.
• To examine the correlation between GCVR and cardiac functional parameters in AF patients.
• To identify specific cardiac indicators linked to GCVR in permanent AF.

Main Methods:

• 157 patients with permanent AF underwent ECG and echocardiography.
• Measured parameters included ventricular rate, QRS duration, QTc interval, and heart rate variability (HRV) power spectra.
• Patients were stratified into GCVR groups for analysis.

Main Results:

• A significant relationship was found between GCVR, AF frequency, and cardiac function.
• Tachysystolic AF forms were prevalent in GCVR classes I-III, increasing with GCVR.
• GCVR class IV showed a shift towards normosystolic AF forms.
• Left ventricular ejection fraction and HRV power spectra showed strong associations with GCVR.

Conclusions:

• GCVR is associated with specific AF frequency patterns and cardiac functional parameters.
• Cardiac functional parameters, particularly ejection fraction and HRV, are closely linked to GCVR in AF.
• These findings highlight the importance of assessing GCVR in AF management.