Abstract Funding Acknowledgements Type of funding sources: Private grant(s) and/or Sponsorship. Main source(s): Stiftung KinderHerz Weserstr. 101 45136 Essen. Background For the last decades, surgical progress lead to better functional outcomes in patients with congenital heart defect (CHD), which may also affect lung function. Reduced volumes were found about half all a CHD. Purpose This prosp...