Table 1

Baseline characteristics

Patients (n)55
Age (years)
 Mean (SD)57.5 (12)
 Range22 to 77
Atrial flutter (n (%))
 Paroxysmal34 (62%)
 Persistent21 (38%)
Atrial fibrillation (n (%))29 (53%)
Structural heart disease (n (%))19 (35%)
Antiarrhythmic drug trials
 Median2
 Range0 to 5
 Amiodarone27 (49%)
 No drug trial2 (4%)