Related Experiment Videos
Atrial and ventricular function after cardioversion of atrial fibrillation
C Xiong1, C Sonnhag, E Nylander
1Linköping Heart Centre, Department of Clinical Physiology, University Hospital, Sweden.
British Heart Journal
|September 1, 1995
Summary
Atrial recovery after cardioversion for atrial fibrillation shows improved flow velocities and atrial function over time. Ventricular function may transiently worsen, with right-sided recovery preceding left-sided recovery.
Area of Science:
- Cardiology
- Cardiac Electrophysiology
- Echocardiography
Background:
- Atrial fibrillation (AF) cardioversion aims to restore sinus rhythm.
- Understanding atrial recovery post-cardioversion is crucial for patient management.
- Previous studies lacked comprehensive analysis of flow dynamics and atrial mechanics.
Purpose of the Study:
- To investigate atrial recovery after cardioversion of atrial fibrillation.
- To integrate transmitral/transtricuspid flow, venous filling, and annulus motion.
- To provide a more complete understanding of cardiac function post-cardioversion.
Main Methods:
- Prospective Doppler echocardiography in 16 patients post-cardioversion.
- Recorded transvalvar flow velocities, venous filling, and annulus motion.
- Evaluations performed before and at 24 hours, 1 month, and 20 months post-cardioversion.
Main Results:
- Absence of A wave and atrial annulus motion before cardioversion.
- Significant increases in A wave, atrial annulus motion, and venous systolic component post-cardioversion (P < 0.01).
- Right-sided function recovered earlier than left-sided function.
Conclusions:
- Atrial recovery post-cardioversion involves improved flow and mechanics.
- Transient ventricular dysfunction may influence inflow velocity recordings.
- Integrated analysis of flow, motion, and filling patterns enhances understanding of cardiac function.