With all due respect, many patients undersoing colonoscopy do NOT want or need sedation, expecially when you explain to them that they might well have long-term memory loss. Midazolam is terrible in this regard and patients are rarely warned of the sede-effect. Propofol is slightly better, actually causing the identical amount of gaba mediated memory loss (damage) at equi-sedo doses when compared to midazolam.  Endo docs:  what is the rush to do a colonoscopy?  Take a few extra minutes and do an unsedated, better exam and leave the patient with an intact memory.  Anyone can push propofol; with Obamacare, anyone will be administering this potent induction drug. And the carnage will start.  Propofol is NOT a nursing drug.