0135: Increasing severity and complexity in adults with congenital heart disease undergoing heart transplantation (ACHD): temporal trends -a collaborative study on 97 patients

were 7 associated procedures: 4 VSD closure, 2 balloon dilatation of aortic recoarctation and one main PA stenting. For PA band dilatation, 17 high pressure balloons were used and 11 low pressure balloons (mean balloon diameter: 12mm). Median RV/Ao pressure ratio dropped from 1 (± 0,3; 0,42-2,2) to 0,6 (± 0,3; 0,31,2) and median RV to PA gradient dropped from 61 mmHg (± 31; 42-160) to 19 mmHg (±26; 12-83). Post intervention, mean saturation was 99% (93-100). When looking at outcome, 23 patients had no further interventions, 1 patient needed 2 dilatations of PA band and 4 patients had surgery (1 double switch, 1 vicious PA band removal, 1 in a context of severe RV dysfunction with tricuspid regurgitation and 1 for VSD closure and main PA stent removal). One patient died of RV failure after surgery and ventricular assistance.