It is reasonable to request that an anesthesiologist be present to ensure adequate pain relief. His oncologist experimented with the commonly used drugs, Versed and f entanyl, to find a combination that would work. For some recent procedures, he w as premedicated with Ativan. Then he was given Versed and Pentobarb instead of f entanyl. I think we've got it right now, since the last sedation went very well.
All sedation can result in complications, primarily to the airway.
It is imperative that sedation occur under the care of trained, experienced personnel and that the child is monitored until fully recovered from the anesthesia.