Hemoglobin (Hb) is the molecule responsible for the transport of oxygen (O2) to the tissues in mammals. The p50 and the Hill coefficient (HC) best describe the ODC. The interaction between Hb and O2 can be influenced by many agents and conditions like temperature, pH, pCO2 and 2,3-diphosphoglycerate (2,3-DPG). During liver transplantation numerous profound physiological changes occur, linked to the different stages of the surgical procedure. Previous studies in humans and animals undergoing liver transplantation have shown that while the ODC seems preserved during preparation and the anhepatic phase, a left shift of the ODC occurs after reperfusion . This left shift of the ODC could imply a decreased release of oxygen to the tissues, probably worsening hemodynamic instability. With this pilot study the investigator aim to measure ODCs at baseline and at different stages during orthotopic liver transplantation in patients in order to get deeper understanding of oxygen delivery and supply during liver transplantation surgery.
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Oxygen Dissocation Curve
Timeframe: 24 hours