Table 3

 Haemodynamic and angiographic data at second catheter intervention

Before reinterventionAfter reinterventionChange (%)p Value
Data are mean (SD).
*From paired t tests.
Haemodynamic variables at catheterisation
    RV pressure (mm Hg)63 (15)49 (11)−19 (14)<0.001 (n = 23)
    PA pressure (mm Hg)25 (7)25 (5)7 (20)0.41 (n = 15)
    RVOT peak to peak systolic gradient (mm Hg)39 (15)23 (10)−37 (20)<0.001 (n = 16)
    Ratio of RV to systemic arterial systolic pressure0.70 (0.19)0.52 (0.14)−21 (16)<0.001 (n = 22)
Angiography
    Minimum diameter conduit in AP view (mm)9.7 (2.1)10.0 (2.3)8 (20)<0.01 (n = 21)
    Minimum diameter conduit in LAT view (mm)7.8 (1.9)9.0 (2.0)20 (19)<0.001 (n = 23)
    Minimum perimeter of conduit (mm)27.1 (4.8)29.8 (6.1)14 (13)<0.001 (n = 21)
    Percentage predicted RVOT area adjusted for BSA24 (8)29 (11)31 (32)<0.001 (n = 21)