Consecutive patients undergoing liver transplant surgery will be included in the study. Before surgical incision, during the preanhepatic phase, during the anhepatic phase, during the postanhepatic phase and following closure of the deep fascial layer of the anterior abdominal wall simultaneous measurement of SVC diameter, SBC collapsibility index and CVP will be recorded.
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Central Venous Pressure (CVP)
Timeframe: From the time patients enter the operating room to leaving the operating room, up to 24 hours.
Correlation of Central Venous Pressure (CVP) and Superior Vena Cava (SVC) Collapsibility Index
Timeframe: From the time patients enter the operating room to leaving the operating room, up to 24 hours.
Correlation of Central Venous Pressure (CVP) and Minimum Diameter of Superior Vena Cava (SVC)
Timeframe: From the time patients enter the operating room to leaving the operating room, up to 24 hours.
Correlation of Central Venous Pressure (CVP) and Maximum Diameter of Superior Vena Cava (SVC)
Timeframe: From the time patients enter the operating room to leaving the operating room, up to 24 hours.