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Table 2 Univariate Associations with % Predicted VO2

From: Maldistribution of pulmonary blood flow in patients after the Fontan operation is associated with worse exercise capacity

Predictor R or standardized β Parameter Estimate ± SE P value
Maldistribution of pulmonary blood flow (n = 147) −0.17 −5.4 ± 2.6a 0.04
Mass-to-volume ratio (g/ml) (n = 140) − 0.24 −19.38 ± 6.60b 0.004
Age at Fontan (year) (n = 139) − 0.20 − 0.47 ± 0.19b 0.02
Old type Fontan (RA-PA or RA-RV conduit) (n = 146) − 0.27 −9.2 ± 2.8a 0.001
CHF symptoms (n = 146) − 0.21 −7.6 ± 2.9a 0.01
Atrial arrhythmia (n = 146) − 0.29 −9.4 ± 2.6a 0.001
Fenestration (n = 139) − 0.17 −1 ± 0.4a 0.04
Age at CMR (year) (n = 146) − 0.36 − 0.55 ± 0.12b 0.001
Time since Fontan (year) (n = 139) − 0.30 −0.67 ± 0.18b 0.001
Indexed end diastolic volume (ml/m2) (n = 145) 0.10 −0.03 ± 0.04b 0.90
Indexed end systolic volume (ml/m2) (n = 145) −0.10 −0.07 ± 0.05b 0.16
Ejection fraction (%) (n = 145) 0.10 0.23 ± 0.14b 0.15
Indexed stroke volume (ml/m2) (n = 145) 0.01 0.01 ± 0.10b 0.94
Branch pulmonary artery symmetry index (n = 147) 0.04 2.52 ± 5.52b 0.64
Systemic left ventricle (n = 144) 0.01 −0.5 ± 3.0a 0.84
Heterotaxy (n = 147) 0.01 −3.3 ± 4.0a 0.41
  1. Abbreviations: PA pulmonary artery, RA right atrium, RV right ventricle
  2. aMean difference ± SE for presence vs. absence of maldistribution of pulmonary blood flow
  3. bSlope ± SE.SE = standard error