Technical details of catheterisation procedures
| Parameter | PPVI (n=54) | BMS+PPVI (n=54) | p Value |
| PPVI delivery system, mean±SD | |||
| Nominal balloon diameter (mm) | 21.0±1.5 | 20.6±1.6 | 0.24 |
| Ratio to BSA (mm/m2) | 13.3±3.8 | 13.4±3.1 | 0.75 |
| Ratio to original RVOT conduit size | 1.0±0.12 | 1.0±0.13 | 0.55 |
| High-pressure balloon RVOT dilatations* | |||
| Patients with ‘none’ performed, n | 17 | 19 | 0.84 |
| Patients with ‘1’ performed, n | 18 | 13 | 0.40 |
| Patients with ‘≥2’ performed, n | 19 | 22 | 0.69 |
| Nominal balloon diameter (mm), mean±SD | 19.5±1.3 | 19.4±1.6 | 0.70 |
| Balloon inflation pressures (atm), mean±SD | 9.9±0.9 | 10.1±1.4 | 0.12 |
| Associated interventional procedures, n | |||
| Interventions to pulmonary arterial tree | 7 | 9 | 0.79 |
| Other interventions (eg, coarctation stenting) | 1 | 1 | 1.00 |
Continuous data presented as mean±SD.
↵* High-pressure RVOT balloon dilatations, summary of all high-pressure pre- and post-dilatations in relation to bare metal stenting and PPVI.
BMS, bare metal stenting; BSA, body surface area; PPVI, percutaneous pulmonary valve implantation; RVOT, right ventricular outflow tract.