Table 2.
Comparisons of Right and Left Atrial Remodeling in the Total Population and Subgroups
| Overall | Healthy volunteers | Paroxysmal AF | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| RA | LA | RA | LA | P value | RA | LA | P value | RA | LA | P value | |
| Volume, mL | 123±39 | 81±33 | 77±20 | 37±9 | <0.001 | 107±25 | 69±25 | <0.001 | 151±38 | 103±29 | <0.001 |
| Atrial surface, cm2 | 134±28 | 87±21 | 94±16 | 60±11 | <0.001 | 125±21 | 81±17 | <0.001 | 153±25 | 100±19 | <0.001 |
| Total fibrosis, % | 4.1±6.7 | 8.9±10 | 3.7±4.3 | 5.0±6.1 | 0.281 | 4.0±6.4 | 8.1±8.7 | <0.001 | 4.4±7.4 | 10.5±12 | <0.001 |
| Interstitial fibrosis, % | 2.1±2.7 | 5.2±4.6 | 1.8±1.9 | 2.9±2.7 | 0.12 | 2.1±2.7 | 5.1±4.5 | <0.001 | 2.2±2.7 | 5.9±4.9 | <0.001 |
| Dense scar, % | 2.0±4.2 | 3.6±6.2 | 1.9±2.5 | 2.1±4.2 | 0.84 | 1.9±3.8 | 3±4.8 | 0.116 | 2.1±4.9 | 4.7±7.8 | 0.001 |
| Sphericity | 78±2.6 | 79.1±3.8 | 76.7±1.9 | 75.6±2.8 | 0.342 | 77.8±2.8 | 78.3±3.5 | 0.403 | 78.6±2.5 | 80.7±3.5 | 0.004 |
Data are provided as mean±SD. AF indicates atrial fibrillation; LA, left atrium; and RA, right atrium.