I Am Having A Colonoscopy Tomorrow And Now Instead Of

I am having a colonoscopy tomorrow and now instead of using Versed and Fentanyl, they are using Propfopol. I am concerned about this Propfopol also causing memory loss or some other side effect. I am 72 yrs. old and female. I have had the last 2 procedures done with only the Fentanyl and everything was fine but it was always a hassle with the Dr. To not have the versed. Please advise.