NPO status changes for EGDs?

Hey all!

So our protocol for endoscopies has always been NPO after mn & clear liquids morning of. 
Our medical director heard I rescheduled someone for drinking an ensure 4 hours prior.  (I always double check with doc & he wanted patient rescheduled)

Med Director thinks we should have done procedure and it's only NPO for ANY liquids 4 hours before.  We use fent/versed  Is this a change a lot of people are doing?  What's your guys rules?

A couple docs are already gathering information to refute this and aren't comfortable with the change.

 

Thanks!