Study of Organ Perfusion in Heart Transplantation in Children

Inclusion Criteria: * Age from birth to less than18 years * Recipients awaiting their first transplant * Ability of the patients and/ or their legal guardians to understand character and individual consequences of the clinical trial * written informed consent of the patients and/ or their legal guardians (must be available before enrolment in the study) * Patient listed on the waiting list for heart transplantation Exclusion Criteria: * Patients who have participated within 30 days or are still participating in any other interventional studies * history of severe organic disease other than concerning the heart * history/demonstration of HIV antibodies or AIDS * multiorgan transplantation * machine-perfused organ * the explantation team is affiliated to another clinic than transplantation team * Failing Fontan patients * Patients who have been incarcerated or involuntarily institutionalized by court order or by the authorities * Pregnancy and lactation