The goal of this clinical trial is to learn if ESP block is safe and effective for perioperative analgesia in patients undergoing liver transplant. The main question it aims to answer are Is ESP block safe and has a minimum side effects, like hematoma? Is it effective for perioperative analgesia? Researchers will compare the results to a group of patients who underwent liver transplants without any regional anaesthesia techniques.

Participants will receive bilateral thoracic ESP block on the day of the transplantation with a subsequent bilateral catheterization.

Inclusion Criteria:

• impaired liver function - cirrhosis or chronic liver disease with the development of hypocoagulation (APTT > 35 sec, INR > 1.5), thrombocytopenia, patients requiring major abdominal surgery, age > 18 years, written consent to participate in the study was obtained

Exclusion Criteria:

• Platelet count <50x109, failed ESP catheterization unilateral or bilateral, failed epidural anesthesia attempt, history of allergy or hypersensitivity to local anesthetics, hepatopulmonary syndrome, patients on mechanical ventilation before surgery, patients on CRRT before surgery, refusal to participate in the study