Introduction: The endoscopic treatment of walled-off pancreatic necrosis (WOPN) as well as other minimally invasive methods have been evolving since last years. The aim of this study is evaluation of efficiency and safety of endoscopic necrosectomy under fluoroscopy done during the transmural drainage in patients with symptomatic WOPN. Material and methods: The retrospective analysis 114 consecutive patients with symptomatic WOPN were treated endoscopically in our medical center between 2011 and 2016. Results: Endoscopic necrosectomy was performed under fluoroscopic guidance during transmural drainage in 24/114 (21,05%) patients.The mean amount of endoscopic procedures in each patient was 8,88 (3-27). The active drainage was continued averagely for 40,1 (11-96) days. The avarage number of necrosectomy procedures during continued drainage was 6,54 (1-24) per patient. Additional percutaneous drainage was applied in just two patients. The complications of endotherapy were present in 9/24 (37,5%) patients. The therapeutic success was reached in 23/24 (95,83%) patients. The mean time of observation was 35 [18-78] months. The recurrence of pancreatic fluid collection was stated in 4 patients during the observation time. The mean time between the end of endotherapy and recurrence of fluid collection was 19 [16-22] months. In three patients recurrent fluid collections were treated endoscopically and in one patient were treated surgically. Long-term success of endoscopic treatment of WOPN was reached in 22/24 (91,67%) patients. Conclusions: Endoscopic necrosectomy under fluoroscopic guidance during transmural drainage is successful and safe method of minimally invasive treatment in selected patients with walled-off pancreatic necrosis.

Introduction. The prevalence of obesity in Poland and worldwide is constantly rising. High effectiveness of bariatric surgery has been proven in literature. It is recommended that bariatric procedures should be done by highly qualified surgeons with the appropriate, up-to-date medical equipment. Aim. The purpose of the study is to establish Polish recommendations and standards for the use of medical equipment for bariatric surgery centers. Materials and methods. The review of the present recommendations of the worldwide organizations and societies (including EAES, IFSO, SAGES) and guidelines was made. On the basis of current literature and authors's clinical experience we proposed standardized protocol for bariatric surgical equipment. Conclusions. Relevant equipping of bariatric surgery centers and implementation of standardized perioperative and surgery protocols will result in significant improvements in bariatric treatment. This will ensure patients safety, a shorter length of hospital stay and considerably reduce the risk of morbidity. Moreover, it will contribute to the efficacy of the bariatric and metabolic surgery procedures, in accordance with the highest globally accepted standards.

The study showed, that mechanical stapler is recommended for contaminated/infected surgical wounds due to significantly lower risk of complications. In the case of wounds divided as a "Clean" and "Clean/Infected" type of suturing material has no significant effect on wound healing.

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