Table 4. Summary of Differences in Blood Flow among Fenestrated and Completed Fontan Circulation Groups Compared to Controls.

	Group 1: Fenestrated Fontan, MR under GA (n = 15)	Group 2: Completed Fontan, MR under GA (n = 6)	Group 3: Completed Fontan, MR without GA (n = 18)
Age at MR (year)	5.90 ± 2.84	8.70 ± 4.89	12.50 ± 3.42
Cardiacoutput	Marginally ↑ (1.05)	Marginally ↓ (0.85)	Mildly ↓ (0.82)
Superior vena cava	Marginally ↑ (1.07)	Marginally ↓ (0.89)	Mildly ↓ (0.75)
Fontan flow	Markedly ↓ (0.39)	Markedly ↓ (0.40)	Moderately ↓ (0.65)
AP collaterals	34% of cardiac output	22% of cardiac output	14% of cardiac output
Abdominal aortic blood flow	Moderately ↓ (0.56)	Mildly ↓ (0.81)	Moderately ↓ (0.67)
Celiac axis flow	Moderately ↓ (0.52)	Markedly ↓ (0.46)	Mildly ↓ (0.78)
SMA flow	Moderately ↓ (0.67)	Marginally ↓ (0.92)	Markedly ↓ (0.31)
SMV flow	Moderately ↓ (0.63)	Mildly ↓ (0.71)	Markedly ↓ (0.26)
Portal venous flow	Moderately ↓ (0.53)	Moderately ↓ (0.59)	Markedly ↓ (0.37)
Hepatic arterial flow	Markedly ↓ (0.32)	Markedly ↓ (0.21)	Markedly ↑*
Hepatic venous flow	Markedly ↓ (0.33)	Markedly ↓ (0.42)	Moderately ↓ (0.72)
Hepatic arterial contribution to hepatic venous flow	33% (20% in control group in fasting status)	17% (20% in control group in fasting status)	45% (no significant flow in control group after meal)
Renal blood flow	Markedly ↓ (0.34)	Markedly ↓ (0.46)	Moderately ↓ (0.69)
Aortic bifurcation	Markedly ↓ (0.39)	Markedly ↓ (0.35)	Mildly ↓ (0.81)

Numbers in parentheses are ratios between flow volumes of patients and healthy control groups. Decreased blood flow volume was graded mildly, moderately and markedly when ratio was > 0.75, 0.50–0.75, and < 0.50, respectively. When difference did not reach statistical significance, it was described as ‘marginally.’ ^*As hepatic arterial flow is normally negligible after meal, flow ratio between patients and healthy controls is not applicable. ↑ = increased, ↓ = decreased