Analysis of learning curves for mini-gastric bypass in 341 patients with obesity

Matveev IA, Popov IB, Mashkin AM, et al. . Analysis of learning curves for mini-gastric bypass in 341 patients with obesity. Pirogov Russian Journal of Surgery. 2024;(9):22‑29. (In Russ.)
https://doi.org/10.17116/hirurgia202409122

Подписка 2026 Хирургия. Журнал им. Н.И. Пирогова (Pirogov Russian Journal of Surgery)

Использование инфографики авторами научных работ

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OBJECTIVE

To analyze learning curves and appropriate experience on the features of mini-bypass surgery in 341 obese patients.

MATERIAL AND METHODS

A total of 341 laparoscopic mini-gastric bypass surgeries performed by one surgeon were studied. The median age of patients was 40.5 [34; 48.3] years. There were 284 (83.2%) women and 57 (16.8%) men. The median BMI was 45 [40;52] kg/m².

RESULTS

The period of MGB development consisted of 138 interventions. Surgery time was 120 [100; 130] min and 90 [82.5; 100] mins after development of this technique (p=0.001). Complications occurred in 5 (1.5%) patients (1 patient with Clavien Dindo grade IIIA and 4 ones with grade IIIB). Of these, there were 3 patients with stapler suture defects. There were no complications only in the 4th quartile of surgeries. Surgical experience significantly affects postoperative outcomes. Surgery time was more influenced by surgical skill rather technique of anastomosis imposing.

CONCLUSION

Polynomial regression objectively characterizes development of surgical skills lasting 138 interventions. MGB is safe for morbid obesity with a complication rate of 1.5% and no mortality.

Keywords:

bariatric surgery

mini-gastric bypass surgery

learning curves

Authors:

Matveev I.A.

Tyumen State Medical University;
Regional Clinical Hospital No. 1

ORCID: 0000-0003-1312-1971

Popov I.B.

Tyumen State Medical University;
Regional Clinical Hospital No. 1

ORCID: 0009-0004-8804-2279

Mashkin A.M.

Sechenov First Moscow State Medical University (Sechenov University)

ORCID: 0000-0003-2321-2818

Dmitriev A.V.

Tyumen State Medical University;
Regional Clinical Hospital No. 1

ORCID: 0009-0007-5979-4895

Yakhyaev E.Z.

Medical unit «Neftyanik»

Borodin N.A.

Tyumen State Medical University

ORCID: 0000-0002-2760-0351

Khasiya D.T.

Tyumen State Medical University

ORCID: 0000-0002-5661-7603

Matreninskikh A.O.

Tyumen State Medical University

ORCID: 0009-0008-9956-0599

Received:

11.01.2024

Accepted:

27.02.2024

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