Table 2.

Drug treatment and underlying diseases in the patients

	Monophasic	Biphasic
Drug treatment
Digoxin	29 (27%)	13 (11%)	NS
Class Ic AAD	8 (7%)	13 (11%)	NS
β Blocker	18 (16%)	14 (12%)	NS
Class III AAD*	56 (51%)	75 (63%)	NS
Underlying diseases
Valvar disease	19 (17%)	15 (13%)	NS
Lone AF	15 (14%)	25 (21%)	NS
Congestive HF	12 (11%)	11 (9%)	NS
Hypertension	12 (11%)	9 (7%)	NS
CAD	6 (6%)	5 (4%)	NS

*Sotalol or amiodarone.

AAD, antiarrhythmic drug; AF, atrial fibrillation; CAD, coronary artery disease; HF, heart failure.