Table 3.

Heart rhythm, atrial fibrillation recurrences, symptom severity, and medical treatment during 12 months of follow-up.

Variable	Preoperative SR (n = 333)
Heart rhythm 12 months after surgery
Sinus rhythm	70.3
Atrial fibrillation	29.7
Paroxysmal	16.1
Persistent	9.8
Long-term persistent	3.8
AF recurrence after three months and/or current AF	34.4
No AF during follow-up *	67.2
AF recurrence
During the blanking period (≤3 months)	23.6
Symptomatic	15.1
Asymptomatic	11.2
After the blanking period (>3 months)	25.7
Symptomatic	16.4
Asymptomatic	13.3
Arrhythmia diagnostics
Resting ECG	80.3
Long-term ECG (24 h)	74.2
Cardiac electrical device testing	3.7
mEHRA classification
I (No)	70.5
IIa (Mild)	26.7
IIb (Moderate)	1.2
III (Severe)	0.8
IV (Disabling)	0.8
AF episode frequency
Occasionally	52.9
Moderately frequent	9.8
Frequent	5.2
Undecided	32.0
Medication
Antiarrhythmic drugs
Class I	2.7
Class II	83.1
Class III	8.0
Digitalis	2.7
Anticoagulation	56.8
DOAC	65.3
VKA	33.5
Antiplatelet therapy	36.2

Categorical variables are presented as percentages. Abbreviations: AF, atrial fibrillation; DOAC, direct oral anticoagulants; ECG, electrocardiogram; mEHRA, modified European Heart Rhythm Association symptom classification; SR, sinus rhythm; VKA, vitamin K antagonist; *, combined endpoint of no AF recurrences at three months + no current AF + no re-ablation + no cardioversion + no rehospitalization for AF.