Markers of Liver Apoptosis After Anesthesia With Sevoflurane or Propofol

Anesthesia may affect the function of vital organs. Liver is one of them. The investigator's hypothesis is that intravenous or inhalation anesthesia does not impair liver function as assessed by more elegant tests like markers indicating liver apoptosis. In the present randomized prospective trial female patients scheduled for mastectomy or thyroidectomy will receive inhalation or total intravenous anesthesia and markers for liver dysfunction will be determined.