Lack of adherence to follow-up visits after bariatric surgery: reasons and outcome.

Background: A substantial number of patients undergoing bariatric surgery are lost to follow-up for unknown reasons, which may cause an overestimation of the benefits of operation. The aim of this study was to identify the reasons of failure to attend controls after bariatric surgery and the relationship with poor weight loss.

Methods: A retrospective analysis of a prospective database including all patients undergoing bariatric surgery from January 2004 to February 2012 was performed.

Effect of Roux-en-Y gastric bypass vs sleeve gastrectomy on glucose and gut hormones: a prospective randomised trial.

Background: Laparoscopic Roux-en-Y gastric bypass (LRYGB) is the most common bariatric technique. Laparoscopic sleeve gastrectomy (LSG) is a restrictive procedure; the metabolic and endocrine effects of which remain unknown. We compared the effects of both procedures on glucose metabolism and fasting and meal-stimulated gut hormone levels.

[Bone mass loss after sleeve gastrectomy: a prospective comparative study with gastric bypass].

Introduction: Bariatric surgery is the most effective option for the treatment of patients with a high risk of complications due to their obesity. However, it brings about a series of changes in calcium and vitamin D metabolism and an increase in resorption which lead to a loss of bone mass.

Aim: The objective of this study is to compare sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB) as regards loss of bone mass using bone densitometry and bone remodelling markers.