Table 2 Comparison between patients in sinus rhythm and those in AF
From: The use of MRI in quantification of the atrial fibrosis in patients with rheumatic mitral disease
| Â | Patients in sinus rhythm (n = 30) | Patients in AF (n = 30) | P value |
|---|---|---|---|
Age, years | 30.7 ± 6.98 | 35.17 ± 8.76 | 0.016 |
Gender, female | 12 (54.5%) | 10 (45.5%) | 0.789 |
DM | 0 | 5 (16.7%) | 0.02 |
HTN | 0 | 2 (6.7%) | 1.154 |
CVS | 0 | 1 (3.3%) | 0.317 |
Duration of symptoms, months | 20 ± 7.27 | 31.80 ± 16.38 | 0.001 |
Mitral valve area by echo, cm2 | 1.33 ± 0.182 | 1.17 ± 0.121 | < 0.001 |
LA diameter by echo, cm | 4.5 ± 0.335 | 5.13 ± 0.469 | < 0.001 |
LA diameter/BSA, cm/m2 | 2.46 ± 0.22 | 2.78 ± 0.29 | < 0.001 |
LA volume by echo, ml | 68.20 ± 6.67 | 77.87 ± 5.35 | < 0.001 |
LA volume index by echo, ml/m2 | 37.30 ± 4.28 | 42.20 ± 3.62 | < 0.001 |
Presence of fibrosis | 10 (33.3%) | 30 (100%) | < 0.001 |
Moderate or severe fibrosis | 6 (21%) | 21 (70%) | < 0.001 |
Distribution of fibrosis | |||
 Left atrial walls involved |  |  |  |
  Posterior wall | 8 (26.7%) | 26 (86.7%) | < 0.001 |
  Septum | 1 (3.3%) | 20 (66.7%) | < 0.001 |
  Anterior wall | 4 (14%) | 14 (46.7%) | 0.005 |
 Right atrium involvement | 6 (20%) | 19 (63.3%) | 0.001 |