Retrospective matched case–control comparison of Totally Robotic Sleeve Gastrectomy (RSG) during the learning curve with Laparoscopic Sleeve Gastrectomy (LSG): why is operative time different?

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Abstract
Robotic approach is slowly rising in metabolic surgery, and laparoscopy is still considered the gold standard for Sleeve Gastrectomy. Aim of our study was to assess and compare outcomes of RSG through a matched comparison with LSG. Retrospective search of prospectively maintained database of our surgical department was carried out find all consecutive patients who underwent RSG from April 2023 to August 2024. Each subject who underwent RSG was matched one-to-one with a patient treated with LSG in the same period. Operative time (docking + console time for the robotic procedures), length of stay, need for rescue drugs, and perioperative complications were recorded calculated and compared. A total number of 50 patients (25 RSG and 25 LSG) were included in the present analysis. Operative time in the LSG group was significantly shorter than in the RSG group (57.8 ± 12.3 VS 80.6 ± 16.6 min, p < 0.01), but it was comparable to console time (57.8 ± 12.3 VS 56.9 ± 19.6, p = 0.85). Mean docking time was 23.7 ± 11 min. Length of stay, readmissions, conversion to laparoscopy/open surgery, early complications, and rescue drugs administration were comparable between the two groups. Age, sex, and BMI were not good predictors neither of laparoscopic nor robotic operative time. RSG during the learning curve proved as safe as LSG, but it was associated with longer operative time due to the duration of the docking step. Operation length may become comparable once the learning curve plateau is reached. Age, BMI, and sex are not good criteria of choice between the two approaches.
Funding Information
  • Università degli Studi di Napoli Federico II

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