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Table 1 Baseline Patient Characteristics (n = 19)

From: The hybrid approach for the surgical treatment of lone atrial fibrillation: One-year results employing a monopolar radiofrequency source

Age

61.2 ± 8.6

M/F

16/3 (84.2/15.8)

BMI

27.6 ± 4.6

Hypertension

7 (36.8)

TIA/CVA

1 (5.2)

Preoperative catheter ablation

 

AF

4 (21.1)

Flutter

5 (26.3)

Type of preoperative AF

 

Paroxysmal

5 (26.3)

Persistent

4 (21.1)

Long-standing persistent

10 (52.6)

Prevalence of AF (68% CI)

 

Paroxysmal

20.0 (16.8–23.3)

Persistent

34.7 (31.2–38.9)

Long-standing persistent

63.6 (59.9–67.1)

EHRA Score

4 [3–4]

Duration of preoperative AF (yrs.)

5 [3–8.5]

Antyarrhythmic Drugs

 

Amiodaron

2 (10.5)

Dysopiramide

1 (5.3)

Flecainide

6 (31.5)

Propaphenon

1 (5.3)

Sotalol

5 (26.3)

Electrical cardioversion

15 (78.9)

Previous Catheter Ablation

 

For AF

6 (31.5)

For Atrial Flutter

5 (26.3)

Preoperative Pacemaker

2 (10.5)

Anticoagulant status

 

Sodium Warfarin

16 (84.2)

Aspirin

5 (26.3)

LAVI (mL/m2)

47 ± 11

LAMAX (mL/m2)

49 ± 20

LAMIN (mL/m2)

30 ± 15

LAEF (%)

38 ± 12

LA A-P (cm)

5.0 ± 0.5

LA S-I (cm)

6.4 ± 0.5

  1. Normal data were presented as mean ±1 Standard deviation (SD), non parametric data as Median and [Interquartile Range] and discrete data as percentage (%).
  2. Abbreviations: M/F: Male/Female; BMI: Body mass index; AF: Atrial fibrillation; CI: Confidence Interval; EHRA: European Hear Rhythm Association; LAVI: (Biplane) Left Atrial Volume Index; LAMAX: Maximum Left Atrial Volume; LAMIN: Minimum Left Atrial Volume; LAEF: Left Atrial emptying Fraction; LA A-P: Left Atrial Antero-Posterior Diameter; LA S-I : Left Atrial Superior-Inferior diameter.