I had to have my surgery done in three parts because of the amount of steriods I was on. The loop illiostomy is just like you current one, except a bit bigger. Personally I've had some problems with it because it empties directly onto my skin, but just talk to your surgeon about how he contructs it.
As for the stints-cathaders-in you ureters (sp?) I had that with my hysteromecty (sp?) (spelling was straight F's through school). They are put in while you are asleep and help the doctor not to cut them (very good thing) when he is moving other things around. Apparently they are very helpful if you have a bit of scar tissue.