Enhanced Recovery After Lumber Laminectomy Using Epidural and General Anesthesia

patients will undergo a single shot epidural bupivacaine (15 ml with 0.25% concentration) followed by a standard general anesthetic technique in which the trachea was intubated using TET, through its side port 2mg/kg , lidocaine 2% will be sprayed immediately after intubation when the patient is in flat supine position then the same dose of lidocaine will be repeated 10 minutes before anesthetic discontinuation.

patients will undergo standard general anesthesia with classic endotracheal tube