Atrial fibrillation recurrence after internal cardioversion: prognostic importance of electrophysiological parameters

CARDIOVASCULAR MEDICINE Atrial fibrillation recurrence after internal cardioversion: prognostic importance of electrophysiological parameters

Objective: To evaluate the clinical and electrophysiological determinants of arrhythmia recurrence in patients undergoing internal atrial cardioversion for chronic atrial fibrillation (AF). Setting: Tertiary cardiac referral centre. Methods: 101 consecutive patients with failed external cardioversion or AF > 1 year underwent internal atrial cardioversion; once stable sinus rhythm (SR) was obtai...

Atrial fibrillation recurrence after internal cardioversion: prognostic importance of electrophysiological parameters.

OBJECTIVE To evaluate the clinical and electrophysiological determinants of arrhythmia recurrence in patients undergoing internal atrial cardioversion for chronic atrial fibrillation (AF). SETTING Tertiary cardiac referral centre. METHODS 101 consecutive patients with failed external cardioversion or AF > or = 1 year underwent internal atrial cardioversion; once stable sinus rhythm (SR) was...

Internal atrial cardioversion in atrial fibrillation.

Internal cardioversion of atrial fibrillation in sheep.

BACKGROUND The cardioversion efficacy of multiple defibrillation waveforms and electrode systems was compared in a sheep model of atrial fibrillation. METHODS AND RESULTS Sustained atrial fibrillation could be induced with rapid atrial pacing in 23 (55%) of the animals. This study was performed in four parts. Six sheep with sustained atrial fibrillation were used for data analysis for each pa...

Significant prolongation of atrial monophasic action potential duration: short-term reverse electrophysiological changes after internal cardioversion of atrial fibrillation.

OBJECTIVE Since short action potentials and short refractory periods facilitate the induction of atrial reentry, this maladaptation has been proposed as the pathophysiological basis of the frequent immediate recurrences of atrial fibrillation (IRAF) after internal cardioversion. However, short-term reverse electrophysiological changes of the atria after cardioversion have not been studied in hu...