(860) - Prognostic Significance of Positive Vasoreactivity Test in Pulmonary Arterial Hypertension is Affected by Age. - Hjalmarsson, C.; Radegran, G.; Bjorklund, E.; Hjalmarsson, A.; Nisell, M.; Papageorgiou, J.; Soderberg, S.; Wahlander, H.; Kjellstrom, B. (Journal of Heart & Lung Transplantation, 2024)