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ORIGINAL CONTRIBUTIONS Bariatric Surgery and Endoluminal Procedures: IFSO Worldwide Survey 2014 L. Angrisani 1 & A. Santonicola 2 & P. Iovino 2 & A. Vitiello 1 & N. Zundel 3 & H. Buchwald 4 & N. Scopinaro 5 Published online: 13 April 2017 # The Author(s) 2017. This article is an open access publication Abstract Background and aim Several bariatric surgery worldwide surveys have been previously published to illustrate the evolution of bariatric surgery in the last decades. The aim of this survey is to report an updated overview of all bariatric procedures performed in 2014.For the first time, a special section on endoluminal techniques was added. Methods The 2014 International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) survey form evalu- ating the number and the type of surgical and endoluminal bariatric procedures was emailed to all IFSO societies. Trend analyses from 2011 to 2014 were also performed. Results There were 56/60 (93.3%) responders. The total number of bariatric/metabolic procedures performed in 2014 consisted of 579,517 (97.6%) surgical operations and 14,725 (2.4%) endoluminal procedures. The most commonly performed procedure in the world was sleeve gastrectomy (SG) that reached 45.9%, followed by Roux- en-Y gastric bypass (RYGB) (39.6%), and adjustable gas- tric banding (AGB) (7.4%). The annual percentage chang- es from 2013 revealed the increase of SG and decrease of RYGB in all the IFSO regions (USA/Canada, Europe, and Asia/Pacific) with the exception of Latin/South America, where SG decreased and RYGB represented the most fre- quent procedure. Conclusions There was a further increase in the total num- ber of bariatric/metabolic procedures in 2014 and SG is currently the most frequent surgical procedure in the world. This is the first survey that describes the endoluminal pro- cedures, but the accuracy of provided data should be hope- fully improved in the next future. We encourage the creation of further national registries and their continuous updates taking into account all new bariatric procedures including the endoscopic procedures that will obtain increasing impor- tance in the near future. Keywords Bariatric/metabolic surgery . Endoluminal procedures . IFSO survey . Sleeve gastrectomy Introduction All bariatric procedures currently available are actually con- sidered effective in the treatment of morbid obesity and its related comorbidities compared to non-surgical interventions [ 1 , 2 ]. The choice of one bariatric procedure over another is generally influenced by a number of factors such as literature results, specific local conditions, and the experience of the surgical staff in each country. Several bariatric surgery world- wide surveys have been previously published [ 3 – 6 ] to * A. Santonicola [email protected] H. Buchwald [email protected] N. Scopinaro [email protected] 1 General and Endoscopic Surgery Unit, S. Giovanni Bosco Hospital, Naples, Italy 2 Gastrointestinal Unit, Department of Medicine and Surgery, University of Salerno, Via S. Allende. Baronissi-, Salerno, Italy 3 Minimally Invasive and Bariatric Surgery, FSFB, Bogata, Colombia 4 Departments of Surgery and Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA 5 Department of Surgery, School of Medicine, University of Genoa, Genoa, Italy OBES SURG (2017) 27:2279 – 2289 DOI 10.1007/s11695-017-2666-x SEPTEMBER 2019 | The Surgical Technologist | 421