I have had several colonoscopies, they have always been rather painful , I was told they sedate me beforehand but did not notice was wide awake and followed the pocedure on the screen. I am in my 5th year in recession of stage 4 Colon cancer. I am supposed to have another Colonoscopy but have declined so far because it is so painful. I am 84 yrs with occasional Afib and wonder if that is why they hesitate to sedate me. Is there something that can be done? I am still in good shape and fairly active. And live a normal independent life. ( scared of Colonoscopies )