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Table 4 4D flow CMR derived energetics in the TCPC

From: 4D flow cardiovascular magnetic resonance derived energetics in the Fontan circulation correlate with exercise capacity and CMR-derived liver fibrosis/congestion

4D flow CMR

n

KEnorm_flow

ELnorm_flow

Total TCPC

28

0.260 (0.068)

0.075 (0.022)

Segmental analysis

 

KEnorm_flow+length

ELnorm_flow+length

Fontan tunnel

35

0.034 (0.011)

0.0087 (0.0029)

SVC

31

0.023 (0.007)

0.0065 (0.0024)

LPA

46

0.040 (0.018)

0.012 (0.005)

RPA

49

0.031 (0.01)

0.0081 (0.0032)

Fontan confluence

56

0.094* (0.041)

0.031* (0.013)

  1. Values are reported as mean (standard deviation). KEnorm_flow and ELnorm_flow. KEnorm_flow in mJ per L/min and ELnorm_flow in mW per L/min. KEnorm_flow+length in mJ per L/min per cm segment, ELnorm_flow+length in mW per L/min per cm segment. LPA/RPA; left/right pulmonary artery, SVC, superior vena cava; TCPC, total cavopulmonary connection; KE, kinetic energy; EL, viscous energy loss rate. * Energetic values for the Fontan confluence are normalized for flow only and thereby not directly comparable with energetics in the other four segments