Haemodynamic and angiographic data at primary catheter intervention
| Before stenting | After stenting | Change (%) | p Value* | |
|---|---|---|---|---|
| Data are mean (SD). | ||||
| *From paired t tests. | ||||
| AP view, anteroposterior angiographic projection; BSA, body surface area; LAT view, lateral angiographic projection; PA, pulmonary artery; RV, right ventricle; RVOT, right ventricular outflow tract. | ||||
| Haemodynamic variables at catheterisation | ||||
| RV pressure (mm Hg) | 66 (17) | 45 (13) | −30 (20) | <0.001 (n = 69) |
| PA pressure (mm Hg) | 23 (7) | 27 (10) | 22 (35) | <0.001 (n = 62) |
| RVOT peak to peak systolic gradient (mm Hg) | 44 (18) | 18 (12) | −55 (24) | <0.001 (n = 62) |
| Ratio of RV to systemic arterial systolic pressure | 0.75 (0.19) | 0.47 (0.14) | −35 (18) | <0.001 (n = 69) |
| Angiography | ||||
| Minimum diameter conduit in AP view (mm) | 7.5 (2.30 | 11.1 (3.2) | 53 (45) | <0.001 (n = 66) |
| Minimum diameter conduit in LAT view (mm) | 6.7 (2.7) | 11.2 (3.4) | 82 (66) | <0.001 (n = 65) |
| Minimum perimeter of conduit (mm) | 21.8 (6.5) | 34.5 (8.7) | 63 (37) | <0.001 (n = 64) |
| Percentage predicted RVOT area adjusted for BSA | 17 (9) | 44 (22) | 190 (169) | <0.001 (n = 62) |