Table 5.
Outcomes in TBA and No TBA Groups
| Total | TBA (%) | No TBA (%) | P Value | |
|---|---|---|---|---|
| Atrial switch patients | n=29 | n=24 | n=5 | — |
| Successful TBA | — | 24 (100%) | — | — |
| Retrograde PVA access | 2 (7%) | 0 (0%) | 2 (40%) | |
| Repeat EPS/maze | 6 (21%) | 4 (17%) | 2 (40%) | 0.5 |
| Subsequent desaturation* | 0 (0%) | 0 (0%) | 0 (0%) | — |
| ≥Moderate complications* | 1 (3%) | 1 (4%) | 0 (0%) | — |
| Ablation success | 25 (86%) | 22 (92%) | 3 (60%) | 0.13 |
| Fontan patients | N=89 | N=50 | N=39 | — |
| Successful TBA | — | 47 (94%) | — | — |
| Retrograde PVA access | 11 (12%) | 5 (10%) | 6 (15%) | 0.5 |
| Repeat EPS/maze | 26 (29%) | 12 (24%) | 14 (36%) | 0.24 |
| Subsequent desaturation* | 5 (6%) | 5 (10%) | 0 (0%) | 0.06 |
| ≥Moderate complications* | 9 (10%) | 5 (10%) | 4 (10%) | 1 |
| Ablation success | 68 (76%) | 38 (76%) | 30 (77%) | 1 |
EPS indicates electrophysiological study; PVA, pulmonary venous atrium; TBA, transbaffle access.
*
Desaturation defined as oximetry saturation measured in a follow up clinic appointment 5 points lower than on the pre‐EPS visit.
*
Complications that were considered either related or possibly related and classified as moderate, severe, or catastrophic.