Portal Pressure Effects of Phlebotomy Combined to Vasopressin Use in Cirrhotic Patients Undergoing Liver Transplantation

METHODS Objectives The primary objective will be to measure the hemodynamic effects of vasopressin on portal pressure in cirrhotic patients who have had a hypovolemic phlebotomy during a liver transplant. The secondary objectives will be to measure the effects of vasopressin on portal pressure in patients who have not had a phlebotomy and to compare this effect between patients who have or have not had a hypovolemic phlebotomy. The tertiary objective will be to assess the effect of the variation in portal pressure under vasopressin, associated or not with a hypovolemic phlebotomy, on hemorrhagic clinical outcomes (intraoperative bleeding and blood transfusions).