Table 2

Cardiopulmonary exercise testing and lung function testing

Control group (n=10)CHD group (n=41)p Value
Cardiopulmonary exercise testing
 Peak VO2 (ml/kg)33±621±6<0.0001
 Peak VO2 (% predicted)107±1962±14<0.0001
 VE/VCO2 at ventilatory threshold30±341±7<0.0001
 VO2 (% predicted at ventilatory threshold)79±2345±12<0.0001
 Heart rate at baseline (beats per minute)73±1273±110.98
 Heart rate reserve (beats per minute)99±1364±290.001
 Systolic blood pressure at rest (mm Hg)116±14109±150.21
 Systolic blood pressure at peak exercise (mm Hg)167±21146±240.01
 Respiratory exchange ratio at peak exercise1.11±0.081.11±0.080.8
Pulmonary function testing
 FVC (% predicted)102±1481±12<0.0001
 FEV1 (% predicted)98±1178±13<0.0001
 FEV1/FVC (%)80±780±101.0
 Total lung capacity (% predicted)88±12
  • CHD, congenital heart disease; FVC, forced vital capacity; FEV1, forced expiratory volume during the 1st second; VE/VCO2, expiratory minute ventilation/carbon dioxide output; VO2, oxygen uptake.