Comparing Cardiac Index Measurements Using Transpulmonary Thermodilution and Transesophageal Echocardiography During Liver Transplant Surgery in Adults

What this Trial Is About

Liver transplantation involves complex changes in blood flow during different surgical stages, which can make monitoring heart function challenging. Researchers are comparing two common monitoring methods transpulmonary thermodilution and transesophageal echocardiography, to see how they track changes in cardiac index during liver transplant surgery. This observational study evaluates these methods to understand their reliability throughout the procedure. Participants undergoing liver transplantation are monitored using both thermodilution and transesophageal echocardiography at four key surgery stages after anesthesia begins, during the anhepatic phase, at reperfusion, and during the surgical anastomosis of the biliary ducts. Measurements include cardiac index values before and after an end-expiratory occlusion test, along with echocardiographic visualization of the surgical anastomosis to assess blood flow and vessel diameter. During the study, patients have their heart function and blood flow monitored closely at these specific time points. Researchers collect demographic, biological, and post-operation data to analyze alongside cardiac measurements. The main outcome is comparing cardiac index changes measured by the two methods at these surgical stages to assess their consistency and reliability in the liver transplant setting.

Comparing Montiroing Cardiac Index by Transpulmonary Thermodilution and Transesophageal Echocardiography During Liver Transplantation