Single-Anastomosis Sleeve Jejunal Bypass, a Novel Bariatric Surgery, Versus Other Familiar Methods: Results of a 6-Month Follow-up—a Comparative Study

  • Masoud Sayadishahraki
  • Mohammad Taghi RezaeiEmail author
  • Mohsen Mahmoudieh
  • Behrouz Keleydari
  • Shahab Shahabi
  • Mostafa Allami
New Concept



Obesity and its associated morbidities have become a significant concern all over the world. Bariatric surgery, regardless of its type, is the most effective approach for treating morbid obesity. Single-anastomosis sleeve jejunal (SASJ) bypass is a novel bariatric surgery technique and can be considered for patients with former background of severe gastroesophageal symptoms. The purpose of this research was to compare SASJ bypass outcomes with other techniques during a 6-month follow-up.


This is a non-randomized clinical trial conducted on 100 patients, who underwent four types of bariatric surgery (classic Roux-en-Y bypass, SASJ bypass, omega gastric bypass, and sleeve gastrectomy), and each one of these types contained 25 cases, during the time period of 2 years from 2016 to 2018. Patients’ information including age, gender, height, basal weight, body mass index (BMI), serum albumin, and hemoglobin A1C were recorded, within 1, 3, and 6 months after their surgery, and also were compared with each other.


Members of the four groups were similar due to their age, gender distribution, height, baseline BMI, hemoglobin A1C, albumin, and also excess weight (P value > 0.05); however, the sleeve gastrectomy group baseline weight was significantly higher compared with the other three groups (P value = 0.013). All of the groups significantly lost weight during this 6-month period, but the comparison between them indicated no statistical difference regarding excess weight loss, BMI, hemoglobin A1C, and albumin (P value > 0.05). The excess weight loss mean during 6 months in SASJ bypass was 34.2 ± 5.4%, which was comparable with other groups.


The weight loss trend after the SASJ bypass was similar to that of older techniques; consequently this technique can be considered for cases with particular indications due to the reversibility and also more accessible gastric follow-up studies in the SASJ approach. Further researches with longer follow-ups are strongly recommended.


Bariatric surgery Metabolic surgery Jejunal bypass Body mass index 


Compliance with Ethical Standards

The Isfahan University Ethics Committee approved this study protocol based on the code of IR.MUI.MED.REC.1397089. After the comprehensive information provision about bariatric surgeries, their complications, and long-term outcomes, patients were reassured about their personal information confidentiality and were requested to sign their participation in the study informed consent form.

Conflict of Interest

The authors declare that they have no conflict of interest.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Isfahan University of Medical SciencesIsfahanIran

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