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[Recovery of mechanical atrial function following atrial fibrillation]
A V Mattioli1, E Tarabini Castellani, D Vivoli
1Cattedra di Cardiologia, Università degli Studi, Modena.
Insights
Atrial function recovery after cardioversion for atrial fibrillation is linked to patient factors. Early recovery of atrial mechanical function was observed in patients with recent atrial fibrillation and normal left atrial size.
Area of Science:
- Cardiology
- Cardiac Electrophysiology
- Echocardiography
Background:
- Atrial fibrillation (AF) is a common arrhythmia.
- Restoration of sinus rhythm is a primary treatment goal.
- Understanding atrial function recovery post-cardioversion is crucial for patient management.
Purpose of the Study:
- To evaluate the recovery of atrial mechanical function after cardioversion of atrial fibrillation to sinus rhythm.
- To identify factors influencing the rate and extent of atrial function recovery.
- To explore the implications for anticoagulant therapy duration.
Main Methods:
- Prospective follow-up of 66 patients with atrial fibrillation undergoing cardioversion.
- Transmitral pulsed Doppler echocardiography performed over 3 months.
- Analysis of results based on etiology, AF duration, left atrial dimension, and cardioversion method.
Main Results:
- Significant increases in peak A wave velocity and atrial contribution to ventricular filling observed.
- Earlier recovery noted in patients with recent AF (< 24 hours) and normal left atrial size.
- Hypertensive patients showed recovery after 1 month; ischemic patients after 3 months.
Conclusions:
- Atrial mechanical function recovery post-cardioversion is variable and influenced by underlying conditions and AF characteristics.
- The timing of recovery suggests potential adjustments to anticoagulant therapy duration based on individual patient profiles.
- Echocardiographic assessment provides valuable insights into atrial recovery dynamics.
Abstract:
To evaluated the recovery of atrial function following atrial fibrillation, we followed 66 patients with atrial fibrillation cardioverted to sinus rhythm. Over 3 months of follow-up we performed transmitral pulsed Doppler echocardiography. The results were evaluated according to the etiology, duration of atrial fibrillation, left atrial dimension and modality of cardioversion. We observed a significant increase in both peak A wave velocity and percent atrial contribution to total left ventricular filling after 1 month in hypertensive patients and after 3 months in ischemic patients. The recovery of atrial mechanical function was earlier in patients with recent atrial fibrillation (< 24 hours) and in patients with normal left atrium. These results may have implications in guiding the duration of anticoagulant therapy after cardioversion.