AUTHOR=Arnold Raoul Roman , Loukanov Tsvetomir , Gorenflo Matthias TITLE=Hypoplastic Left Heart Syndrome – Unresolved Issues JOURNAL=Frontiers in Pediatrics VOLUME=Volume 2 - 2014 YEAR=2014 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2014.00125 DOI=10.3389/fped.2014.00125 ISSN=2296-2360 ABSTRACT=Hypoplastic left heart syndrome (HLHS) is one of the most challenging congenital heart defects. At present it is expected that - at best - 70% of newborns with HLHA will reach adulthood. This review addresses the problems of right ventricular failure and insufficient growth of pulmonary vasculature in these patients. In order to further improve long-term prognosis translational research to control right ventricular function and growth of pulmonary arteries and progress in chronic circulatory support are clearly needed to provide a further improvement for adults with HLHS.