Duodenal Switch

1993 Marceau Report Abstract

The following is the abstract of Dr. Picard Marceau's 1993 published report:

Marceau, P., S. Biron, et al. (1993).
"BILIOPANCREATIC DIVERSION WITH A NEW TYPE OF GASTRECTOMY."
Obes Surg 3: 29-35.

In an attempt to improve the results of biliopancreatic diversion in the treatment of morbid obesity, two aspects of the procedure performed at Laval Hospital were modified to reduce adverse physiological consequences. The distal gastrectomy was replaced by a parietal gastrectomy which preserves vagal continuity along with the lesser curvature, and leaves intact the antro-pyloro-duodenal pump. The duodenum was stapled shut and nutrients were diverted through a duodeno-ileal anastomosis. The biliopancreatic diverting intestinal limb was anastomosed to the nutrient ileal limb 100 cm proximal to the ileocecal valve instead of 50 cm proximal to it, thus doubling the length of the common ileal absorptive segment. Weight loss after either operation was greater thjan 70% of the inital excess weight. Following the new operation, there was a lesser prevalence of side effects, especially loose stools and malodorous gas, a lesser degree of hypocalcemia and no hypoalbuminemia. The duodeum recanalized at the staple line in 20% of patients who had the new operation. When data from these patients was excluded, weight loss following the new operation was greater than that seen after theold one. The prevalence of side effects and the degree of calcium and protein malabsorption remained significantly lower. Weight loss remained satisfactory with a common limb measuring 100 cm. The parietal gastrectomy was not restrictive as shown by the failure to lose further weight when the duodenal staple diversion failed. Weight loss was thus mainly a function of biliopancreatic diversion, but increased weight loss in the new procedure despite a doubling of the common ileal limb suggests that parietal gastrectomy contributed to the weight loss. Because duodenal recanalization can be corrected surgically and now prevented, the modified biliopancreatic bypass is preferred.