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Hemostatic evaluation of patients undergoing liver transplantation
Insights
Liver transplant patients often have pre-existing coagulation issues. Thromboelastography effectively monitors coagulation during liver transplantation, aiding in managing hemostatic problems.
Area of Science:
- Hepatology
- Hematology
- Transplantation Surgery
Background:
- Liver transplantation is a complex procedure often involving patients with pre-existing liver disease.
- Patients undergoing liver transplantation frequently present with altered hemostatic mechanisms due to impaired liver function.
Purpose of the Study:
- To evaluate coagulation and hemostasis during liver transplantation.
- To assess the utility of thromboelastography in monitoring coagulation parameters in liver transplant recipients.
Main Methods:
- A detailed coagulation and thromboelastographic study was conducted on 50 liver transplant procedures.
- Patients' pre-operative coagulation status and changes during and after reperfusion were analyzed.
Main Results:
- Most patients exhibited pre-operative hemostatic abnormalities, with elevated Factor VIII levels being an exception.
- Significant deterioration of coagulation factors was observed during donor liver reperfusion.
- Platelet counts decreased, and some coagulation factors showed only partial recovery post-reperfusion.
Conclusions:
- Thromboelastography provides rapid and valuable information for monitoring coagulation during liver transplantation.
- Thromboelastography can help forewarn the transplant team of potential hemostatic complications.
- The study supports the use of thromboelastography as an effective tool for managing coagulation in liver transplant patients.
Abstract:
A detailed coagulation and thromboelastographic study was done on the first 50 liver transplantation procedures performed at the Mayo Clinic between March 1985 and June 1986. Most of the patients suffered from primary sclerosing cholangitis, primary biliary cirrhosis, or chronic active hepatitis. Seven patients required a second liver transplantation, and six patients died, none intraoperatively. Most of the patients had distorted hemostatic mechanisms preoperatively, as would be expected because the liver generates most of the clotting factors. The outstanding exception was factor VIII, which was usually in the high-normal range or even more elevated. Substantial deterioration of coagulation factors occurred regularly during reperfusion of the donor liver. In some instances, this trend was corrected within 1 hour, but platelet counts continued to decrease, and some coagulation factors rebounded only partially. Because thromboelastographic tracings are quickly available to the liver transplant team and because they tend to forewarn of impending hemostatic problems, we believe that thromboelastography is a reasonably effective procedure for monitoring coagulation during liver transplantation.