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

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/m ² .
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.