Effect of Short-term Oxygen During CPET in GUCH
Effect of Short-term Oxygen During CPET in GUCH
In a randomized, sham-controlled crossover trial the investigators will test whether
 supplemental oxygen given during cardiopulmonary exercise testing will improve exercise
 performance and physiological parameters in patients with grown-up congenital heart disease.
Inclusion Criteria:

 -  GUCH, stable medication for at least 4 weeks.

 Exclusion Criteria:

 -  instable status, pregnancy, clinically relevant concomitant diseases, inability to
 follow the study procedures