In the GI lab I worked at we had procedures scheduled every 30 minutes no matter if it was an EGD, Colon or both. The EGD would last 5-10 min max and the colons often times would be less than 15....
There are many different kinds of buttons/tubes out there. If you can find out specifically what brand of tubes are used, you may get more detailed descriptions. In the ones that I see most often, I...