Table 2:
MRI-derived data for ventricular global function of the systemic right ventricle following either a modified Blalock–Taussig shunt or a right ventricle-to-pulmonary artery conduit
| MBT shunt | RVPA conduit | P-value | |
|---|---|---|---|
| Total | n = 59 | n = 34 | |
| iEDV ml/ BSA1.3 | 80 ± 20 | 106 ± 33 | 0.0001 |
| iESV ml/ BSA1.3 | 34 ± 13 | 47 ± 24 | 0.001 |
| iSV ml/ BSA1.3 | 46 ± 11 | 59 ± 15 | 0.0001 |
| EF % | 57.9 ± 8.3 | 56.5 ± 8.5 | 0.43 |
| Stage 1 | n = 30 | n = 20 | |
| iEDV ml/ BSA1.3 | 83 ± 23 | 110 ± 32 | 0.001 |
| iESV ml/ BSA1.3 | 38 ± 15 | 48 ± 24 | 0.087 |
| iSV ml/ BSA1.3 | 44 ± 10 | 62 ± 13 | 0.0001 |
| EF % | 55.1 ± 7.6 | 58.3 ± 9.1% | 0.18 |
| TR | |||
| None | 14 | 9 | 0.75 |
| Mild | 13 | 8 | |
| Moderate | 3 | 3 | |
| Severe | 0 | 1 | |
| LV shape | |||
| Globular | 17 | 17 | 0.92 |
| Slit-like | 10 | 8 | |
| Borderline | 3 | 3 | |
| Stage II | n = 29 | n = 14 | |
| iEDV ml/ BSA1.3 | 77 ± 17 | 98 ± 33 | 0.014 |
| iESV ml/ BSA1.3 | 30 ± 9 | 47 ± 19 | 0.001 |
| iSV ml/ BSA1.3 | 47 ± 13 | 51 ± 17 | 0.38 |
| EF % | 60.6 ± 8.7 | 53.4 ± 6.6 | 0.006 |
| TR | |||
| None | 17 | 6 | 0.31 |
| Mild | 10 | 7 | |
| Moderate | 2 | 0 | |
| Severe | 0 | 1 | |
| LV shape | |||
| Globular | 18 | 9 | 0.30 |
| Slit-like | 8 | 2 | |
| Borderline | 2 | 3 | |
Values are indexed to BSA. Values in bold indicate where P < 0.05.
SV: stroke volume; BSA: body surface area; MBT: modified Blalock–Taussig; RVPA: right ventricle-to-pulmonary artery; EF: ejection fraction; LV: left ventricle; iEDV: indexed end diastolic volume; iESV: indexed end systolic volume; iSV: indexed stroke volume; TR: tricuspid regurgitation.