Table 1.

Participants’ clinical characteristics⁹.

	Fontan patients	Controls	P-value
Total [n]	20	20
Female sex [n]	7	7
Age [years]	23.1 ± 5.1	24.7 ± 6.6	0.28
After TCPC [years]	18.8 ± 5.2
Bodyweight [kg]	69.8 ± 13.2	73.3 ± 11.7	0.17
Height [cm]	171.3 ± 7.4	174.5 ± 8.7	0.04
Body mass index [kg/m²]	23.8 ± 4.1	22.5 ± 3.3	0.05
SpO2 at rest [%]	93 ± 3	99 ± 1	<0.00001
SpO2 at exercise [%]	90 ± 3	98 ± 1	<0.00001
$\dot{\mathrm{V}}$O2 at rest [mL/kg/min]	5.6 ± 1.7	5.8 ± 1.1	0.03
$\dot{\mathrm{V}}$O2AT [mL/kg/min]	24.5 ± 4.9	30.1 ± 3.6	<0.00001
Peak $\dot{\mathrm{V}}$O2 [mL/kg/min]	28.8 ± 10.1	45.7 ± 6.4	<0.00001
Double inlet left ventricle [n]	10
TA + PS/PA [n]	9
TA + PS + VSD [n]	1
Extracardiac Fontan [n]	16
Open fenestration (at study) [n]	3
LPA dilation/stent [n]	4
Tunnel dilation/stent [n]	6
Closure of fenestration [n]	1
Closure of vv collateral [n]	3
Electrophysiologic examination [n]	2

Values are given as mean ± standard deviation. AT, anaerobic threshold; LPA, left pulmonary artery; n, number; PA, pulmonary atresia; PS, pulmonary stenosis; SpO₂, pulsoxymetric oxygen saturation; TA, tricuspid atresia; TCPC, total cavopulmonary connection; $\dot{\mathrm{V}}$O₂, oxygen uptake; VSD, ventricular septal defect; vv, veno-venous.