Question:
I know this may sound stupid...but what is the difference in Proximal & Distal RNY?

   — e_tn_greneyz (posted on March 26, 2003)

March 26, 2003
The terms refer to the amount of intestine bypassed (or re-routed), and consequently, the amount of common channel left at the other end. A proximal bypass has the least amount bypassed, and the largest common channel. A distal bypass has the greatest amount bypassed, and the shortest common channel. Distal means you absorb fewer nutrients and calories from the food that you do eat.
   — kateseidel

March 26, 2003
Hi, the above poster is correct in their definition to you. I just wanted to share my experience from my consultation with you about that question. I asked the surgeon which one would she be likely to do on me because I do have a fairly high BMI (sigh!). Her response was neither because she does it between the two...not too much but not too little. I liked that alot and it made me feel a lot more comfortable about the surgery. Good luck and I hope I've added a little more to your "quest" in the process of getting all the information you can and getting it all straight in your head. There's so much information to take in..so take your time.
   — kathleen-Joan piper

March 27, 2003
I've heard proximal defined as bypassing up to 150 cm, with 150 or so being medial (another term you will hear used by some) and anything over 150 being distal. Those with 200 pounds or more to lose often get distal. Distals have more problems absorbing vitamins and nutrients post-op and perhaps more long term problems if they do not supplement well. However, with less absorbed, they also do not absorb as many calories and fats which helps them lose weight. I have also heard that those with less bypassed lose their weight just as well as distals and have less malabsorbtion. Many insurance companies will not pay for distal due to the long term problems of so much bypassed. Some insurance companies even specify the length of the bypass that they will pay for.
   — Cindy R.