Table 1.
Patient characteristics at baseline (n = 24)
| Patient characteristics | Baseline (n = 24) |
|---|---|
| Age (years) (median [Q1; Q3]) | 47 [44; 50] |
| Female (n, %) | 12 (50.0%) |
| Anatomy (n, %) | |
| TGA with atrial switch procedure | 16 (66.7%) |
| ccTGA | 8 (33.3%) |
| sRV function (n, %) | |
| Mildly reduced | 3 (12.5%) |
| Moderately reduced | 16 (66.7%) |
| Severely reduced | 5 (20.8%) |
| Tricuspid regurgitation (n, %) | |
| Grade I | 11 (45.8%) |
| Grade II | 12 (50.0%) |
| Grade III | 0 (0%) |
| Grade IV | 1 (4.2%) |
| NYHA (n, %) | |
| NYHA II | 17 (70.8%) |
| NYHA III–IV | 7 (29.2%) |
| History of SVT (n, %) | 14 (58.3%) |
| Atrial fibrillation | 9 (37.5%) |
| Atrial flutter | 8 (33.3%) |
| Atrial tachycardia | 10 (41.7%) |
| AVNRT | 4 (16.7%) |
| SVT ablation (n, %) | 10 (41.7%) |
| Pacemaker/ICD (n, %) | 13 (54.2%) |
| Distance to hospital (km) (median [Q1; Q3]) | 65 [28; 121] |
AVNRT, atrioventricular nodal re-entrant tachycardia; ccTGA, congenital corrected transposition of the great arteries; ICD, Implantable cardioverter-defibrillator; NYHA, New York Heart Association Functional Classification; Q1, quartile 1; Q3, quartile 3; sRV, systemic right ventricle; SVT, supraventricular tachycardia; TGA, transposition of the great arteries.