Comparison between children with and without a second catheter intervention
| No reintervention (n = 46) | Reintervention (n = 24) | p Value* | |
|---|---|---|---|
| Data are median (range) or mean (SD). | |||
| *From unpaired t tests; †Mann-Whitney U test. | |||
| Age at conduit insertion (years) | 3 (0 months to 16 years) | 3 (2 months to 8 years) | 0.62† |
| Data at initial catheter intervention | |||
| Age (years) | 8 (7 months to 18 years) | 6 (10 months to 13 years) | <0.05† |
| Balloon diameter as percentage of predicted RVOT diameter | 83 (13) (n = 43) | 82 (20) | 0.29 |
| Study after initial intervention | |||
| Percentage of predicted RVOT area | 49 (27) (n = 43) | 36 (14) (n = 22) | <0.05 |
| RV pressure (mm Hg) | 43 (12) (n = 45) | 47 (15) | 0.19 |
| RVOT peak to peak systolic gradient (mm Hg) | 16 (9) (n = 43) | 21 (15) (n = 21) | 0.07 |
| Ratio of RV to systemic arterial systolic pressure | 0.62 (0.17) (n = 45) | 0.68 (0.22) | 0.34 |