 The purpose of this study is to compare the hemodynamic effects of a standardized induction of general anesthesia with either propofol or ketofol in patients with physical status classification ASA 3. The study will be a double blinded, randomized controlled trial RCT with two arms of treatment groups. One arm will consist of induction of general anesthesia using a mixture of 1.5mgkg:0.75mgkg Propofolketamine ketofol and the induction dose will be 1.5mgkg of propofol and 0.75mgkg of ketamine; the second arm will consist of induction of general anesthesia using propofol 2mgkg. The primary outcome of the intervention will consist of hemodynamic changes during the first 30 minutes after induction of general anesthesia. 