Table 1 Baseline characteristics of study population.

From: Association of left atrial pressure with late gadolinium enhancement extent in patient who underwent catheter ablation for atrial fibrillation

 

E-LGE group (n = 78)

S-LGE group (n = 95)

p value

Age (years)

57 ± 10

56 ± 11

0.540

Male gender

62 (80)

78 (82)

0.403

Body mass index (kg/m2)

26 ± 5

25 ± 3

0.099

Non-paroxysmal AF

40 (51)

32 (33)

0.021

Diagnosis to ablation time (month)

43 ± 34

46 ± 46

0.655

Comorbidity

Hypertension

27 (35)

38 (40)

0.285

Diabetes mellitus

5 (6)

9 (10)

0.328

Thromboembolism

6 (8)

8 (8)

0.545

History of heart failure

7 (9.0)

0

0.003

Coronary artery disease

4 (5)

5 (5.3)

0.622

Chronic kidney disease

3 (4)

3 (3.2)

0.562

Thyroid disease

5 (6)

7 (7)

0.525

CHADS2 VASc ≥ 2

29 (37)

32(34)

0.374

CMR data

LGE area (%)

29 ± 8

11 ± 5

< 0.001

LA volume (ml)

96 ± 34

87 ± 29

0.091

LA volume index (ml/m2)

54 ± 20

49 ± 17

0.085

Echocardiographic data

LV mass index (g/m2)

87 ± 16

91 ± 16

0.113

LV ejection fraction (%)

57 ± 6

58 ± 4

0.465

E/Em ratio

8.5 ± 2.5

9.2 ± 4.0

0.192

Estimated PASP (mmHg)

28 ± 7

26 ± 8

0.265

Spontaneous echo contrast

20 (25.6)

16 (16.8)

0.109

Measured LA pressure

LAPpeak (mmHg)

23 ± 6

19 ± 5

< 0.001

LAPnadir (mmHg)

9 ± 4

8 ± 4

0.006

LAPmean (mmHg)

14 ± 4

12 ± 4

< 0.001

  1. Data are presented as n (%) or mean ± standard deviation and analyzed using χ2 test and unpaired two-tailed t-test or Fisher’s exact test.
  2. AF atrial fibrillation, CMR cardiac magnetic resonance, LGE late gadolinium enhancement, LA left atrial, LV left ventricular, PASP pulmonary artery systolic pressure, LAP left atrial pressure.
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