Table 2 Baseline demographics, as assessed at the initial scan prior to ablation procedure
All Subjects (n = 40) | Scan 2 1.5 T (n = 30) | Scan 2 3 T (n = 10) | p-value | |
|---|---|---|---|---|
Male | 31 (78%) | 22 (73%) | 9 (90%) | 0.27 |
Paroxysmal AF | 20 (50%) | 17 (56%) | 3 (30%) | 0.14 |
CHA2DS2VASC Score | 1 (IQR 0–2) | 1 (IQR 0–2) | 0 (IQR 0–1.5) | 0.28 |
AF duration (years) | 3.0 (IQR 2.1–5.3) | 2.5 (IQR 1.9–5.0) | 5.5 (IQR 2.6–12.5) | 0.19 |
Significant Comorbidities | 22 (56%) | 16 (53%) | 6 (60%) | 0.71 |
Age (years) | 61 ± 10 | 61 ± 8 | 61 ± 13 | 0.99 |
Weight (kg) | 88 ± 17 | 88 ± 18 | 87 ± 12 | 0.77 |
Height (cm) | 176 ± 7.1 | 176 ± 6.4 | 177 ± 9.3 | 0.60 |
BMI (kg/m2) | 28.4 ± 5.3 | 28.7 ± 5.9 | 27.6 ± 3.1 | 0.48 |
HR at baseline scan (bpm) | 61 ± 10 | 61 ± 8 | 61 ± 13 | 0.99 |
Sinus rhythm at baseline scan | 25 (62.5%) | 19 (63%) | 7 (70%) | 0.70 |
LV ejection fraction (%) | 60 ± 10 | 62 ± 10 | 58 ± 11 | 0.41 |
LA size (ml) | 121 ± 32 | 122 ± 37 | 119 ± 19 | 0.75 |
LA fibrosis at baseline (%) | 36.0 ± 13.9 | 36.7 ± 15.1 | 33.9 ± 9.3 | 0.49 |
LA ejection fraction (%) | 30 ± 18 | 29 ± 19 | 34 ± 12 | 0.41 |
LV native T1 time (msec) | 988 ± 22 | 991 ± 24 | 985 ± 21 | 0.33 |