ArticleJAMA network open2020
Association of Preoperative Body Weight and Weight Loss With Risk of Death After Bariatric Surgery.
Article in JAMA network open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
40 citing papers in PubMed, 1 synthesis or guideline pooled it, 88 citations in OpenAlex.
- Intentional Preoperative Weight Loss for Obesity in Patients Undergoing Gastrointestinal Cancer Resections: A Systematic Review and Meta-analysis.Journal of gastrointestinal cancer · 2026Pooled it
- Preoperative Use of a Mobile Application Within the Multidisciplinary Team Approach - A Randomized Controlled Clinical Trial.Obesity surgery · 2026Trial
- Effect of polyethylene glycol loxenatide on weight loss in super-obese patients with type 2 diabetes: a randomized controlled trial.Frontiers in endocrinology · 2026Trial
- Preoperative Weight Loss in Patients With Excess Weight and Colorectal Cancer: The CARE Feasibility Randomized Clinical Trial.JAMA network open · 2025Trial
- Dietitian-led very low-calorie diet for preoperative rehabilitation in patients with obesity awaiting non-bariatric elective laparoscopic surgery: A retrospective study.Nutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition · 2026Article
- The Future of Obesity Care: Exploring Synergies Between Metabolic Bariatric Surgery, Interventional Endoscopy and Pharmacotherapy.Obesity surgery · 2026Review
- Preoperative Very-Low-Calorie Ketogenic Diet Versus Low-Calorie Diet in Bariatric Surgery: A Prospective Comparative Study.Nutrients · 2026Article
- Bariatric Surgery Outcomes in Asians with Severe Obesity (BMI ≥ 50 kg/mJournal of clinical medicine · 2026Article
- The Role of GLP1 Receptor Agonists and Multi-agonist Incretin Therapies for Specific Obesity-related Health Conditions: Evidence and Rationale for Prioritisation.Current obesity reports · 2026Review
- Short-Term Safety and Healthcare Utilization Following Intragastric Balloon Placement in Patients With and Without Diabetes Mellitus: A Propensity-Matched Analysis.Obesity surgery · 2026Article
- Preoperative Glucagon-like Peptide-1 Therapy in Bariatric Surgery Patients With Morbid Obesity (PreMO): Rationale and Study Design for a Randomized Controlled Trial.The Journal of surgical research · 2026Article
- Extensive Weight Loss Prior to Bariatric Surgery is Associated with Worse Outcomes.Obesity surgery · 2026Article
- Body mass index (BMI) associates with frequency of arterial hypertension and type 2 diabetes in obese patients candidates for bariatric surgery.Cardiovascular diabetology · 2025Article
- Use of Glucagon-Like Peptide-1 Agonists Among Individuals Undergoing Bariatric Surgery in the US.JAMA surgery · 2025Article
- The effect of preoperative body weight loss on 5-year bariatric surgery outcomes.International journal of obesity (2005) · 2025Article
- The expanding role of GLP-1 receptor agonists: a narrative review of current evidence and future directions.EClinicalMedicine · 2025Review
- Article
- Obesity Management Medications as Adjuncts to Metabolic and Bariatric Surgery: Consensus Recommendations from India.Obesity surgery · 2025Review
- Clinical outcomes of varying age groups following vertical sleeve gastrectomy: a retrospective study using the 2022 Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program database in the United States.Journal of minimally invasive surgery · 2025Article
- A single-center experience of safety and effectiveness of adjustable intragastric balloon in patients with super obesity.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2025Article
Corrections and comments
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Authors and funding
12 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Importance: Perception of weight loss requirements before bariatric surgery varies among patients, physicians, and health insurance payers. Current clinical guidelines do not require preoperative weight loss because of a lack of scientific support regarding its benefits. Objective: To examine the association of preoperative body mass index (BMI) and weight loss with 30-day mortality after bariatric surgery. Design, Setting, and Participants: This cohort study used data from 480 075 patients who underwent bariatric surgery from 2015 to 2017 in the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program, which covers more than 90% of all bariatric surgery programs in the United States and Canada. Clinical and demographic data were collected at all participating institutions using a standardized protocol. Data analysis was performed from December 2018 to November 2019. Exposures: Preoperative BMI and weight loss. Main Outcomes and Measures: 30-day mortality after bariatric surgery. Results: Of the 480 075 patients (mean [SD] age 45.1 [12.0] years; 383 265 [79.8%] women), 511 deaths (0.1%) occurred within 30 days of bariatric surgery. Compared with patients with a preoperative BMI of 35.0 to 39.9, the multivariable-adjusted odds ratios for 30-day mortality for patients with preoperative BMI of 40.0 to 44.9, 45.0 to 49.9, 50.0 to 54.9, and 55.0 and greater were 1.37 (95% CI, 1.02-1.83), 2.19 (95% CI, 1.64-2.92), 2.61 (95% CI, 1.90-3.58), and 5.03 (95% CI, 3.78-6.68), respectively (P for trend < .001). Moreover, compared with no preoperative weight loss, the multivariable-adjusted odds ratios for 30-day mortality for patients with weight loss of more than 0% to less than 5.0%, 5.0% to 9.9%, and 10.0% and greater were 0.76 (95% CI, 0.60-0.96), 0.69 (95% CI, 0.53-0.90), and 0.58 (95% CI, 0.41-0.82), respectively (P for trend = .003). Conclusions and Relevance: In this study, even moderate weight loss (ie, >0% to <5%) before bariatric surgery was associated with a lower risk of 30-day mortality. These findings may help inform future updates of clinical guidelines regarding bariatric surgery.
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