Comparative Study Between the Effect of Dexmedetomidine ,Midazolam or Bupivacaine Packing During FESS on Surgical Field Visualization

Group I (Group C): (control group) Patients in this group will receive only 5 ml of intranasal saline.

Group II (Group D): Patients in this group will receive only intranasal Dexmedetomidine (1 mcg/kg) made up to 5 ml in normal saline.

Group III (Group M): Patients in this group will receive only intranasal midazolam (0.2 mg/kg) made up to 5 ml in normal saline.

Group IV (Group B): Patients in this group will receive only intranasal bupivacaine (0.5% solution) 5 ml.