Effects of TIVA With Propofol Versus Inhalational Anaesthesia on Postoperative Pain After Hepatectomy

Target controlled infusion (TCI) with modified Marsh effect site model (Fresenius Kabi) will be used for induction and maintenance of general anaesthesia. Monitoring and other anaesthetic procedures including the management of hypertension and hypotension in group P will be the same as group S. The only difference is that induction and maintenance of general anaesthesia will be conducted using total intravenous infusion of propofol. Oxygen and air would be given to provide a FiO2 of 30-50%.

Propofol 1.5-3mg/kg, remifentanil 1mcg/kg, and rocuronium 0.6-1mg/kg or atracurium 0.5mg/kg will be used intravenously for induction of general anaesthesia. Intubation would be performed after induction of general anaesthesia. General anaesthesia monitoring will be used. Sevoflurane, air and oxygen will be used for maintenance of general anaesthesia. FiO2 will be kept between 35-50%. BIS monitoring will be applied and level of anaesthetia will be titrated to maintain a BIS value of between 40-60. Intravenous remifentanil infusion between 0.1-0.2 mcg/kg/min will be given and this will be titrated to provide optimal haemodynamic parameters.