 Patients were randomly allocated to two groups using a permuted block randomization method: 1 patients intubated by using the videolaryngoscopy 2 patients intubated by using the Macintosh laryngoscope . SAP, MAP, and heart rate were measured and recorded in the operating room: At baseline, before intubation, immediately after intubation and 1,2,3,4 and 5 minutes after tracheal intubation. 