[Procedural guideline for laparoscopic one anastomosis gastric bypass (OAGB) (2022 edition)].

The quantity of cases of metabolic and obesity-related diseases including obesity and type 2 diabetes in China are increasing each year. The total numbers of both existing patients and new patients each year are rated as the highest in the world. A large amount of evidence-based medical reports have shown that bariatric surgery can effectively reduce excessive body weight in patients with morbid obesity, and alleviate the effects of a series of obesity-related metabolic comorbidities, including type 2 diabetes. Laparoscopic one anastomosis gastric bypass (OAGB) is currently one of the most widely practiced bariatric surgeries procedures in the world. Although this procedure has been carried out on patients in China for more than 15 years, the standard surgical operation for OAGB has not been subject to relevant guidelines or consensus. In light of this, Chinese Society for Metabolic & Bariatric Surgery (CSMBS) recently initiated the compilation of the first edition of the "Procedural guideline for laparoscopic one anastomosis gastric bypass (2022 Edition)", aiming to provide a unified specifications for this procedure. It will provide a reference for surgical operating standards for clinicians in the field of obesity-related metabolic surgery to reduce or avoid complications caused by irregular surgery, and will ultimately benefit more patients.目前，我国肥胖症和2型糖尿病等代谢疾病和肥胖相关疾病的患病人数逐年增加，总患病人数及年新增患病人数均已居全球首位。大量循证医学证据表明，减重手术可有效减轻病理性肥胖症患者的多余体质量，并有效改善2型糖尿病等一系列肥胖相关代谢合并症。腹腔镜单吻合口胃旁路手术（OAGB）是最常见的减重手术术式之一，尽管 OAGB在国内开展已有超过 15年的历史，然而，针对OAGB的规范手术操作，国内仍缺少相关指南或共识。为此，中国医师协会外科医师分会肥胖和糖尿病外科医师委员会（CSMBS）发起编写首版《腹腔镜单吻合口胃旁路术规范化手术操作指南（2022版）》，旨在规范腹腔镜OAGB操作流程，为肥胖代谢外科领域的临床医生提供规范化手术操作参考，以减少或避免因手术不规范导致发生相关并发症，从而使得更多患者获益。.