APPENDIX I: PBA LRYGB Procedure-based assessment – Laparoscopic RYGB Rating scale Did not perform this step 0 Performs some part of the task, needs assistance to complete task 1 Performs the task with direct guidance & instruction 2 Performs the task with minimal guidance & instruction 3 Performs the task with no guidance or instruction 4 Not applicable na The order of executed steps is not relevant for scoring 1. Operative set-up Positioning of monitors and OR team 0 1 2 3 4 na Positioning patient 0 1 2 3 4 na Time-out procedure including checking antibiotic prophylaxis 0 1 2 3 4 na Disinfection, sterile exposure 0 1 2 3 4 na Feedback: 2. Starting the laparoscopy Introduction optical trocar 0 1 2 3 4 na Introduction of additional trocars under laparoscopic sight 0 1 2 3 4 na Introduction of liver retractor 0 1 2 3 4 na Exposure of operative field 0 1 2 3 4 na Feedback: 3. Creation of the gastric pouch Opening pars flacid and lesser sac 0 1 2 3 4 na Stapling horizontally 0 1 2 3 4 na Longitudinal stapling with gastric bougie 0 1 2 3 4 na Detachment of posterior attachments stomach 0 1 2 3 4 na Dissecting angle of His ventral side and Final stapling 0 1 2 3 4 na Haemostatic check of stapleline 0 1 2 3 4 na Feedback: 98 5
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