Obesity Surgery

, Volume 27, Issue 11, pp 2836–2844 | Cite as

Analysis of Gastric Physiology After Laparoscopic Sleeve Gastrectomy (LSG) With or Without Antral Preservation in Relation to Metabolic Response: a Randomised Study

  • M. Vives
  • A. Molina
  • M. Danús
  • E. Rebenaque
  • S. Blanco
  • M. París
  • A. Sánchez
  • F. Sabench
  • D. Del Castillo
Original Contributions



Laparoscopic sleeve gastrectomy is one of the most common techniques in bariatric surgery, but there is no consensus on the optimal distance from the pylorus to start the gastric transection. The aim of this study is to determine the differences in gastric emptying, gastric distension and metabolic response between two starting distances.

Material and Methods

This is a prospective randomised study of 60 patients (30 patients with the section at 3 cm and 30 patients at 8 cm from the pylorus). We calculate at 6 and 12 months from surgery gastric emptying by scintigraphy (T1/2 min), gastric volume by CT scan (cc) and metabolic response by blood sample analysis (glucose, HbA1c, insulin, HOMA-IR, GLP-1, GIP and C-peptide).


Gastric emptying increases the speed significantly in both groups but is greater in the 3-cm group (p < 0.05). Dividing groups into type 2 diabetic patients and non-diabetic patients, the speed in non-diabetic patients is significantly higher for the 3-cm group. Residual volume increases significantly in both groups, and there are no differences between them. One year after surgery, there are significant improvements in the hyperinsulinaemia in the patients of the 3-cm group with respect to the 8-cm group, but only in diabetic patients. No differences between groups are found regarding changes in GLP-1 or GIP.


Gastric emptying is faster in patients with antrum resection. The distance does not influence the gastric emptying of diabetic patients. Other mechanisms may explain metabolic response besides GLP-1 and its association with improvements in diabetes via gastric emptying.


Sleeve gastrectomy Gastric emptying Gastric volume Antrum Incretins 



This study was funded by the “Carlos III Research Institute”/Ministry of Economy and Competitiveness (registration number PI 11/02332), Spain. We are very grateful for the tasks of the nursing teams of the operating rooms and hospitalisation area, whose help has been indispensable for the correct functioning of the project, as well as all the staff of the Anesthesiology and Rehabilitation Service.

Compliance with Ethical Standards

Informed consent was obtained from all individual participants included in the study. All procedures performed were in accordance with the ethical standards of the institutional research committee (registration number CEIC11–04-28/4PROJ3) and with the 1964 Helsinki declaration and its later amendments.

Conflict of Interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Surgery Service, University Hospital of Sant Joan, Faculty of Medicine, IISPV“Rovira i Virgili” UniversityReusSpain
  2. 2.Nuclear Medicine Service, University Hospital of Sant Joan, Faculty of Medicine, IISPV“Rovira i Virgili” UniversityReusSpain
  3. 3.Radiology Service, University Hospital of Sant Joan, Faculty of Medicine, IISPV“Rovira i Virgili” UniversityReusSpain

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