Impact of Patient- and Surgeon-Related Factors on Weight Loss after Laparoscopic Sleeve Gastrectomy-A Single-Center Study.

: Surgical treatment for obesity is becoming increasingly popular. Surgeons have been trying to find a simple way to predict the type of surgical intervention that is best for a specific patient. This study aimed to determine the patient- and surgeon-related factors that affect weight loss after laparoscopic sleeve gastrectomy (LSG). : A total of 129 patients underwent LSG in one surgical department. The following factors were analyzed: gender; age; highest preoperative and 6-month postoperative weight; the occurrence of obesity-related diseases, such as type 2 diabetes and hypertension; the number of surgeons involved in the surgery; and who performed the surgery, a resident or specialist. The outcomes also included length of hospital stay, operative time and complications. Statistical significance was defined as ≤ 0.05. : A total of 129 patients (94 female) with a median age of 43 years and BMI of 43.1 kg/m underwent LSG, while a total of 109 (84.5%) patients achieved ≥50% of excess BMI loss (%EBMIL). Preoperative weight loss had no impact on %EBMIL ( = 0.95), operative time ( = 0.31) and length of hospital stay ( = 0.2). Two versus three surgeons in the operating team had no impact on surgery time ( = 0.1), length of stay ( = 0.98) and %EBMIL ( = 0.14). The operative time and length of hospital stay were similar for specialists and surgeons in training. %EBMIL was higher in the residents' surgery without statistical significance ( = 0.19). Complications occurred in 3.9% without mortality or leaks. : Preoperative comorbidities, surgeons' experience and the number of surgeons in the operating team do not impact the complication rate, length of hospital stay, operative time and postoperative weight loss after LSG.