Saragai Y, et al. - In this investigation, the researchers retrospectively analyzed 84 living donor liver transplantation (LDLT) candidates to investigate the impact of a subclinical high tricuspid regurgitation pressure gradient (TRPG) on the survival of small grafted LDLT. Results of this study suggested that mean pulmonary artery pressure measured after general anesthesia with FIO₂0.6 (mPAP-FIO₂0.6) cannot accurately reflect the congestive pressure to the liver, as the pressure could escape via pulmonary shunt in cirrhosis patients. They discovered that a subclinical high TRPG was an important marker for predicting a worse survival after LDLT, possibly reflecting congestive pressure to the grafted small liver.