Orthotopic liver transplantation (OLT) is the only therapy for patients with liver failure. These patients have reduced anesthetic requirements compared with healthy patients. Sevoflurane has proven safe use for anesthesia during OLT. It has a known minimum alveolar concentration (MAC) in healthy adults ranging from 1.7 to 2.1%. However, the MAC of sevoflurane is unknown in patients liver failure The aim of this study was to determine the MAC of sevoflurane in patients undergoing OLT.
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Study Group (OLT) 1. first OLT 2. chronic liver failure Control Group 1. Abdominal surgery 2. required skin incision of at least 10cm 3. Transaminases within normal range Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 48 F.1.3 Elderly (>=65 years) no F.1.3.1 Number of subjects for this age range
Exclusion criteria
Exclusion criteria: All patients 1. Age 60 years 2. History of malignant hyperpyrexia 3. Cannot ventilate, cannot intubate situation 4. CRP prior initiation of sevoflurane 5. Pregnancy and lactation period Study group 1. “High urgency” transplantation 2. Acute liver failure 3. Hepatic encephalopathy grade IV Control group 1. History of liver disease 2. Abnormal liver specific laboratory parameters 3. Laparoscopic surgery
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: to determine whether patients with end stage liver disease undergoing liver transplantation have lower MAC values of sevoflurane than healthy patients.;Secondary Objective: not applicable;Primary end point(s): Determination of MAC by observation of patients' reaction to initial skin incision. Patients' reaction is defined as gross movement or no movement of arms, legs or head within 1 minute after the skin incision.;Timepoint(s) of evaluation of this end point: Observation period starting with skin incision and ending after 1 minute | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary end point(s): not applicable;Timepoint(s) of evaluation of this end point: not applicable | — |
Countries
Austria
Contacts
Medizinische Universität Wien, Abteilung für Anästhesie und allgemeine Intensivmedizin