Is 8 hours surgery time safe for Tummy Tuck, Breast Lift with Augmentation and Flanks lipo?

Eight hours seems to be a bit long for the procedures you mentioned. You will want to ensure that the procedures will be performed by a board certified plastic surgeon in either a hospital or accredited surgery center. This is also assuming that you are healthy with no complex medical conditions. I encourage you to discuss your concerns with your surgeon.

This amount of time can be safe for surgery. I have patients do appropriate clearances prior to this length of surgery. Additionally, I would have you stay overnight with monitoring to make sure everything stays safe.

This is safe if done with a board certified surgeon in an accredited facility with a credentialed anesthesiologist. I have done procedures this length multiple times with no difficulties