Table 1.
Morphological characteristics of atrial appendages myocardium of patients with different forms of AF (PAF, PsAF, LSAF) and two groups with AF and AF + IAA.
| Morphological parameters | LAA/RAA | Patients with different forms of AF | Patients with IAA or AF + IAA | |||
|---|---|---|---|---|---|---|
| PAF (n = 12) | PsAF (n = 20) | LSAF (n = 23) | AF (n = 37) | AF + IAA (n = 18) | ||
| Fibrosis Me (min–max), % | LAA | 47.0 (24.7–61.8) | 45.8 (36.7–63.4) | 46.9 (3.17–60.1) | 46.6 (3.2–63.4) | 44.0 (24.7–61.8) |
| RAA | 46.9 (21.5–54.1) | 44.4 (19.3–61.6) | 50.3 (3.22–74.7) | 45.7 (21.5–74.7) | 44.6 (19.3–52.6) | |
| IAA, % of patients | LAA | 16.7 | 25 | 4.3 | - | 100 |
| RAA | 41.7 | 30 | 21.7 | - | 100 | |
| Cardiomyocyte diameter, mean ± SD, µ | LAA | 14.9 ± 1.5 | 16.0 ± 2.8 | 16.3 ± 2.4 | 15.5 ± 2.2 | 16.6 ± 2.8 |
| RAA | 15.4 ± 2.0 | 15.7 ± 3.2 | 15.9 ± 2.4 | 15.2 ± 2.4 | 16.5 ± 2.7 | |
| Cardiomyocyte length, mean ± SD, µ | LAA | 59.7 ± 13.0* | 67.1 ± 8.9* | 73.1 ± 8.2 | 68.4 ± 10.3 | 66.4 ± 12.2 |
| RAA | 68.5 ± 3.6 | 68.3 ± 9.8* | 74.4 ± 13.5 | 69.1 ± 11.1 | 73.6 ± 10.3 | |
| Cardiomyocytes with myolysis (10–50% and more 50% of cell volume), % of patients | LAA | 25 | 50 | 26.1 | 35.1 | 33.3 |
| RAA | 33.3 | 45 | 43.5 | 40.5 | 44.4 | |
*Comparison with LSAF, Mann–Whitney U Test p < 0.05.