| Procedure | Number (%) n = 197 |
| Patent foramen ovale closure | 58 (29.4) |
| Atrial septal defect closure | 18 (9.1) |
| Coarctation stenting | 7 (3.6) |
| Ventricular septal defect closure | 6 (3.0) |
| Other intervention | 13 (6.6) |
| Left and right heart catheterisation | 78 (40.0) |
| Right heart catheterisation | 12 (6.1) |
| Left heart catheterisation | 5 (2.5) |