Comparison of Safety and Efficacy for Different Sedation Regimens During Colonoscopy

It will not be used alone but in combination with Fentanyl in the Midazolam + Fentanyl group.

It will used alone in Propofol group and in combination with Fentanyl in the Propofol + Fentanyl group.

Fentanyl will not be used in isolation but will be used in combination with either Midazolam or Propofol in Midazolam + Fentanyl group and Propofol + Fentanyl group, respectively.