Table 2

O2 pulse parameters

ParameterHealthy controlsCohort A FontanCohort B Fontan
Peak VO2 (mL/kg/min)36.0±10.325.1±7.1*20.9±7.1*
O2 pulsePEAK (mL/beat)13.2±4.19.8±2.2*9.3±2.9*
O2 pulseAT (mL/beat)10.9±3.58.4±1.8*8.7±2.8*
O2 pulse slopePEAK0.01±0.0050.008±0.003*0.009±0.005*
O2 pulse slopeAT0.01±0.0060.01±0.004*0.01±0.0005†
  • *Compared with healthy controls, p<0.01.

  • †Compared with healthy controls, not statistically significant (p>0.05).

  • AT, anaerobic threshold.