Significant correlations between iPL at VAT and geometric parameters (n=45)
| Geometric parameter | Spearman’s rank correlation coefficient (r) | p Value |
| Normalised minimum FP diameter | −0.632 | <0.001 |
| Normalised mean FP diameter | −0.507 | <0.001 |
| Normalised maximum FP diameter | −0.390 | 0.008 |
| Normalised minimum SVC diameter | −0.349 | 0.02 |
| Normalised minimum pulmonary artery diameter | −0.464 | 0.001 |
| Normalised mean pulmonary artery diameter | −0.511 | <0.001 |
| TCPC diameter index | −0.819 | <0.001 |
| Connection angle between SVC and LPA | 0.305 | 0.04 |
FP, Fontan pathway; iPL, indexed power loss; LPA, left pulmonary artery; SVC, superior vena cava; TCPC, total cavapulmonary connections.