Table 3
Summary of TCPC haemodynamics and exercise performance parameter (n=47)
| Mean±SD | Cohort (n=47) | (1) Intra-atrial (n=33) | (2) Extracardiac (n=14) | p Value comparing (1) and (2) |
| TCPC haemodynamic variables | ||||
| iPL at VAT | 0.051±0.044 | 0.049±0.046 | 0.055±0.040 | 0.46* |
| TCPC resistance† at VAT (mm Hg/(L/min/m2)) | 0.58±0.49 | 0.55±0.49 | 0.64±0.51 | 0.33* |
| TCPC diameter index (mm/m) | 10.3±1.7 | 10.5±1.7 | 9.8±1.4 | 0.18‡ |
| Exercise performance variables | ||||
| VO2 at VAT (mL/kg/min) | 17±4 | 17±4 | 17±4 | 0.73* |
| VO2 at peak exercise (mL/kg/min) | 29±7 | 29±7 | 29±6 | 0.93‡ |
| Work rate at VAT/weight (W/kg) | 0.92±0.29 | 0.94±0.31 | 0.87±0.27 | 0.51‡ |
| Oxygen saturation at peak exercise (%) | 90±4 | 91±4 | 89±5 | 0.10* |
*Performed with the Mann-Whitney test.
†TCPC resistance was computed as
, where BSA = body surface area (m2) and LSVC= left SVC.‡Performed with Student’s t-test.
iPL, indexed power loss; TCPC, total cavapulmonary connections; VAT, ventilatory anaerobic threshold.
