Efficacy and speed of conversion of recent onset atrial fibrillation using oral propafenone versus parenteral amiodarone: A randomized controlled comparative study.

BACKGROUND

Atrial fibrillation is the most commonly encountered arrhythmia. Several antiarrhythmic agents are effective in restoring and maintaining sinus rhythm.

AIM OF THE WORK

To compare the efficacy and rapidity of conversion of recent onset atrial fibrillation using oral propafenone versus intravenous infusion of amiodarone.

METHODS

The study included 200 patients with recent onset atrial fibrillation. Patients were equally divided into 2 groups; group A where intravenous infusion amiodarone was given and group B where oral propafenone was administrated. The effectiveness and the time needed for conversion of atrial fibrillation to sinus rhythm were compared in both groups.

RESULTS

The success of conversion of atrial fibrillation to sinus rhythm was 83% in group A and 85% in group B, p-value = 0.699. The time elapsed from drug administration till conversion of atrial fibrillation was 9.07 ± 5.04 hours in group A versus 3.9 ± 1.54 hours in group B, p-value = 0.001. In both groups, patients who showed failed conversion had a significantly larger left atrial diameter and a significantly higher high sensitivity C-reactive protein (hsCRP) level.

CONCLUSION

Oral propafenone was faster than parenteral amiodarone in the conversion of recent onset atrial fibrillation to sinus rhythm. Patients with failed conversion had a bigger left atrial diameter and a higher hsCRP when compared to patients with successful conversion.