ORIGINAL CONTRIBUTIONS Long-Term Outcomes and Quality of Life at More than 10 Years After Laparoscopic Roux-en-Y Gastric Bypass Using Bariatric Analysis and Reporting Outcome System (BAROS) Alan Askari 1 & Dairui Dai 1 & Charlotte Taylor 1 & Catherine Chapple 1 & Sonal Halai 1 & Krashna Patel 1 & Ravikrishna Mamidanna 1 & Aruna Munasinghe 1 & Farhan Rashid 1 & Omer Al-Taan 1 & Vigyan Jain 1 & Douglas Whitelaw 1 & Periyathambi Jambulingam 1 & Md Tanveer Adil 1 # Springer Science+Business Media, LLC, part of Springer Nature 2020 Abstract Introduction Literature on long-term (> 10 years) outcomes in terms of weight loss, resolution of co-morbidities, and quality of life (QoL) after bariatric surgery is limited. The aim of this study was to investigate the excess weight loss (EWL), resolution of comorbidities, and QoL more than 10 years after laparoscopic Roux-en-Y gastric bypass (LRYGB) using the Bariatric Analysis and Reporting Outcome System (BAROS). Methods Data on patient demographics, weight, body mass index (BMI), comorbidities, type of surgery, complications, and QoL were collected from a prospectively maintained database. Results A total of 92 patients out of 104 who underwent LRYGB during the study period and completed a median follow-up of 130 months were successfully contacted. The median age was 48 years (IQR 42–54 years) and 85.9% had a BMI of more than 40. The median excess weight loss (EWL) was 46.5% (IQR 27.9–64.3%). Type 2 diabetes mellitus reduced from 56.5 to 23.9% (p < 0.001), hypertension from 51.1 to 39.1% (p = 0.016), and obstructive sleep apnoea from 33.7 to 12.0% (p < 0.001). Participants reported feeling better (median 0.2, IQR 0.2–0.4), engaging in more physical activity (0.1, IQR 0.1–0.3), having more satisfactory social contacts (0.4, IQR 0.2–0.5), a better ability to work (0.3, IQR - 0.1–0.5), and a healthier approach to food (0.2, IQR - 0.3–0.3) at the end of follow-up. Conclusion LRYGB leads to positive outcomes in terms of weight loss, reduction in comorbidities, and improvement in QoL at a follow-up of more than 10 years. Keywords Long-term outcomes . Quality of life . Bariatric surgery . Gastric bypass . BAROS Introduction There has been a rise in the number of patients undergoing bariatric surgery in recent years, not just for weight loss but also for the treatment of obesity-related comorbidities like type 2 diabetes mellitus (T2DM), hypertension, obstructive sleep apnoea (OSA), and hyperlipidemia [1]. The effect of bariatric surgery has largely been measured by physical out- comes such as excess weight loss (EWL), resolution of T2DM, and improvements in other comorbidities [1, 2]. Even though these factors are important metrics to measure bariatric outcomes, however, perhaps equally important is the quality of life (QoL) outcomes in bariatric patients after sur- gery. While SF-36 or other QoL questionnaires can be used, these are not specific to bariatric surgery. Bariatric Analysis and Reporting Outcome System (BAROS) was developed in 1998 with a view to measure not just weight loss and resolu- tion of comorbidities after bariatric surgery but also assess QoL in bariatric patients [3]. BAROS is a validated scoring system that is based on a combination of clinician-reported outcomes such as EWL and changes in medical conditions along with patient-reported outcomes of QoL. The patients report QoL section using the Likert scale ranging from - 0.50 to + 0.50. Combined with the EWL, improvement in medical conditions and whether or not * Alan Askari alan.askari@gmail.com 1 Department of Upper GI and Bariatric Surgery, Luton and Dunstable University Hospital, Lewsey Road, Luton LU4 0DZ, UK Obesity Surgery https://doi.org/10.1007/s11695-020-04765-0