[citation needed] Two variants of jejunoileal anastomosis were developed, the end-to-side[1] and end-to end[2] anastomoses of the proximal jejunum to distal ileum.
Bypassing the major site of bile acid reabsorption in the small intestine therefore further reduces fat and fat-soluble vitamin absorption.
The colonic absorption of oxalate has been attributed to: Patients with intestinal bypass develop diarrhea 4–6 times daily, the frequency of stooling varying directly with fat intake.
There is a general tendency for stooling to diminish with time, as the short segment of small intestine remaining in the alimentary stream increases in size and thickness, developing its capacity to absorb calories and nutrients, thus producing improvement in the patients' nutrition and counterbalancing the ongoing weight loss.
[3] Some modern procedures utilize a lesser degree of malabsorption combined with gastric restriction to induce and maintain weight loss.
The multiple complications associated with JIB while considerably less severe than those associated with Jejunocolic anastomosis, were sufficiently distressing both to the patient and to the medical attendant to cause the procedure to fall into disrepute.
Good Weight Loss, b. Malabsorption with multiple deficiencies, c. Diarrhea, d. Severe Pain Issues That are not fully understood, e. Possible Death As a consequence of all these complications, jejuno-ileal bypass is no longer a recommended bariatric surgical procedure.