“…This difference is attributed to alteration in the geometry of the tricuspid valve and right atrium related to the technique of right atrial anastomosis. Other possible causes of TR include: 1) allograft dysfunction with right ventricular dilatation due to poor preservation, reperfusion injury, donor factors, or rejection, 2) pulmonary hypertension, 3) severe donor recipient size mismatch, and 4) structural damage occurring during endomyocardial biopsy [6,7,8,9,10].…”