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Background: Healthcare-associated activity accounts for 10% of the United States' carbon dioxide (CO 2 ) emissions. Using telemedicine for bariatric surgery evaluations decreases emissions and reduces patient burden during the multiple required interdisciplinary visits. After adopting telemedicine during COVID, our clinic continues to utilize telemedicine for preoperative bariatric evaluations. We evaluated the reduced environmental impact associated with this practice., Methods: A retrospective review of all new evaluations for vertical sleeve gastrectomy (SG) or Roux-en Y gastric bypass (RYGB) from 2019 and 2021 was conducted. The 2019 year represents pre-pandemic, in-person evaluations and 2021 represents telemedicine evaluations during the COVID pandemic. Carbon emissions were calculated using the Environmental Protection Agency's (EPA's) validated formula of 404g CO 2 per car-mile. Preoperative evaluation time was calculated from the initial clinic visit to the operation date., Results: There were 51 patients in the 2019 cohort and 55 patients in the 2021 cohort. In the 2019 in-person cohort, there was significantly more kg of estimated CO 2 emitted (10,225 vs. 2011.4, p<.001) compared to the 2021 cohort. For time required to complete the preoperative workup, there was no statistically significant difference between the two groups (162 days vs. 193 days, p=.226). The attrition rate was lower in the 2021 cohort (22.22% v. 35.9%, p<.001)., Conclusions: Implementation of telemedicine for bariatric preoperative evaluations reduced patient travel, carbon emissions, and improved attrition rate. We encourage bariatric providers to use telemedicine as we believe this eases patient burdens and, with wider adoption, could significantly reduce our carbon footprint., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Introduction: Venous thromboembolism (VTE) is a significant cause of morbidity and mortality after bariatric surgery. Roughly 80% of VTEs occur post-discharge. The frequency of post-discharge heparin (PDH) prophylaxis use is unknown, and evidence about benefits and risks is limited. We aimed to determine the rate of use of PDH prophylaxis and evaluate its relationship with VTE and bleeding events., Methods: Using the Truven Health MarketScan® database, we performed a retrospective cohort study (2007-2015) of adult patients who underwent sleeve gastrectomy or gastric bypass. We determined PDH prophylaxis from outpatient pharmacy claims, and post-discharge 90-day VTE and bleeding events from outpatient and inpatient claims. We used propensity score-adjusted regression models to mitigate confounding bias., Results: Among 43,493 patients (median age 45 years; 78% women; 77% laparoscopic gastric bypass, 17% laparoscopic sleeve gastrectomy, 6% open gastric bypass), 6% received PDH prophylaxis. Overall, 224 patients (0.52%) experienced VTEs, and 806 patients (1.85%) experienced bleeding. The unadjusted VTE rate did not differ between patients who did and did not receive PDH prophylaxis (0.39% vs. 0.52%, respectively; p = 0.347). The unadjusted bleeding rate was higher for the PDH prophylaxis group (2.74% vs. 1.80%, p < 0.001). In our adjusted analysis, a 23% lower risk of VTE in the PDH prophylaxis group was not statistically significant (odds ratio [OR] 0.77, 95% confidence interval [CI] 0.41 to 1.46), whereas the 47% higher risk of bleeding was statistically significant (OR 1.47, 95% CI 1.14 to 1.88)., Conclusions: PDH prophylaxis after bariatric surgery is uncommon. In our analysis, use was not associated with a lower VTE risk but was associated with a higher bleeding risk., (© 2020. Springer Science+Business Media, LLC, part of Springer Nature.)

Background: Opioid use after bariatric surgery is not clearly understood. Few guidelines exist to inform opioid-prescribing practices after bariatric surgery., Objective: To understand opioid use following bariatric surgery., Setting: University hospital., Methods: Bariatric surgery patients at a single center were prospectively surveyed at the time of their post-operative visit (January-May 2018). Patients were asked about their opioid use following surgery, whether they received education about opioid use and what they did with leftover medications. Demographic and operative details were obtained from the medical record., Results: Among 33 patients, the majority (n = 29, 88%) were female with a median age of 40 (20-68) and body mass index of 44.8 (33-78.5). Most patients had leftover narcotics (n = 25, 73%). The median number of pills used was 15 (0-48). Only 12 patients (36%) thought that they had been prescribed "too much" pain medication. Most patients reported receiving education about expectations for post-operative pain (n = 22, 69%); few recalled education about reducing or stopping opioids (n = 13, 40%). More than half of patients (n = 17, 53%) kept their leftover opioids rather than disposing of them or bringing them to an approved turn in location., Conclusions: Despite most patients having leftover opioids following surgery, few patients recognized possible overprescription. Education regarding opioid use following surgery is inconsistent, potentially contributing to the amount of retained opioids currently available. Future guidelines should focus on determining the appropriate amount of opioids to be prescribed following surgery and standardizing and improving education given to patients.

Importance: Metabolic changes after maternal bariatric surgery may affect subsequent fetal development. Many relevant perinatal outcomes have not been studied in this postoperative population, and the risks associated with short operation-to-birth (OTB) intervals have not been well examined., Objective: To examine the risk for perinatal complications in women with a history of bariatric surgery (postoperative mothers [POMs]) by comparing them with mothers without operations (nonoperative mothers [NOMs]) and examining the association of the OTB interval with perinatal outcomes., Design, Setting, and Participants: This investigation was a population-based retrospective cohort study (January 1, 1980, to May 30, 2013) at hospitals in Washington State. Data were collected from birth certificates and maternally linked hospital discharge data. Participants were all POMs and their infants (n = 1859) and a population-based random sample of NOMs and their infants frequency matched by delivery year (n = 8437)., Exposures: Bariatric operation before birth or categories of OTB intervals., Main Outcomes and Measures: The primary outcomes were prematurity, neonatal intensive care unit (NICU) admission, congenital malformation, small for gestational age (SGA), birth injury, low Apgar score (≤8), and neonatal mortality. Poisson regression was used to compute relative risks (RRs) and 95% CIs, with adjustments for maternal body mass index, delivery year, socioeconomic status, age, parity, and comorbid conditions., Results: A total of 10 296 individuals were included in the analyses for this study. In the overall cohort, the median age was 29 years (interquartile range, 24-33 years). Compared with infants from NOMS, infants from POMs had a higher risk for prematurity (14.0% vs 8.6%; RR, 1.57; 95% CI, 1.33-1.85), NICU admission (15.2% vs 11.3%; RR, 1.25; 95% CI, 1.08-1.44), SGA status (13.0% vs 8.9%; RR, 1.93; 95% CI, 1.65-2.26), and low Apgar score (17.5% vs 14.8%; RR, 1.21; 95% CI, 1.06-1.37). Compared with infants from mothers with greater than a 4-year OTB interval, infants from mothers with less than a 2-year interval had higher risks for prematurity (11.8% vs 17.2%; RR, 1.48; 95% CI, 1.00-2.19), NICU admission (12.1% vs 17.7%; RR, 1.54; 95% CI, 1.05-2.25), and SGA status (9.2% vs 12.7%; RR, 1.51; 95% CI, 0.94-2.42)., Conclusions and Relevance: Infants of mothers with a previous bariatric operation had a greater likelihood of perinatal complications compared with infants of NOMs. Operation-to-birth intervals of less than 2 years were associated with higher risks for prematurity, NICU admission, and SGA status compared with longer intervals. These findings are relevant to women with a history of bariatric surgery and could inform decisions regarding the optimal timing between an operation and conception.

Importance: Among women and men with severe obesity, evidence for improvement in urinary incontinence beyond the first year after bariatric surgery-induced weight loss is lacking., Objectives: To examine change in urinary incontinence before and after bariatric surgery and to identify factors associated with improvement and remission among women and men in the first 3 years after bariatric surgery., Design, Setting, and Participants: The Longitudinal Assessment of Bariatric Surgery 2 is an observational cohort study at 10 US hospitals in 6 geographically diverse clinical centers. Participants were recruited between February 21, 2005, and February 17, 2009. Adults undergoing first-time bariatric surgical procedures as part of clinical care by participating surgeons between March 14, 2006, and April 24, 2009, were followed up for 3 years (through October 24, 2012)., Intervention: Participants undergoing bariatric surgery completed research assessments before the procedure and annually thereafter., Main Outcomes and Measures: The frequency and type of urinary incontinence episodes in the past 3 months were assessed using a validated questionnaire. Prevalent urinary incontinence was defined as at least weekly urinary incontinence episodes, and remission was defined as change from prevalent urinary incontinence at baseline to less than weekly urinary incontinence episodes at follow-up., Results: Of 2458 participants, 1987 (80.8%) completed baseline and follow-up assessments. At baseline, the median age was 47 years (age range, 18-78 years), the median body mass index was 46 kg/m2 (range, 34-94 kg/m2), and 1565 of 1987 (78.8%) were women. Urinary incontinence was more prevalent among women (49.3%; 95% CI, 46.9%-51.9%) than men (21.8%; 95% CI, 18.2%-26.1%) (P < .001). After a mean 1-year weight loss of 29.5% (95% CI, 29.0%-30.1%) in women and 27.0% (95% CI, 25.9%-28.6%) in men, year 1 urinary incontinence prevalence was significantly lower among women (18.3%; 95% CI, 16.4%-20.4%) and men (9.8%; 95% CI, 7.2%-13.4%) (P < .001 for all). The 3-year prevalence was higher than the 1-year prevalence for both sexes (24.8%; 95% CI, 21.8%-26.5% among women and 12.2%; 95% CI, 9.0%-16.4% among men) but was substantially lower than baseline (P < .001 for all). Weight loss was independently related to urinary incontinence remission (relative risk, 1.08; 95% CI, 1.06-1.10 in women and 1.07; 95% CI, 1.02-1.13 in men) per 5% weight loss, as were younger age and the absence of a severe walking limitation., Conclusions and Relevance: Among women and men with severe obesity, bariatric surgery was associated with substantially reduced urinary incontinence over 3 years. Improvement in urinary incontinence may be an important benefit of bariatric surgery.

Objective: To determine whether binge eating disorder (BED) status is associated with medical comorbidities in obese adults scheduled for bariatric surgery., Method: The study utilized Longitudinal Assessment of Bariatric Surgery-2 data obtained from six clinical centers around the United States. This is a well-phenotyped cohort of individuals who were evaluated within 30 days before their scheduled surgery using standardized protocols. In the cohort, 350 participants were classified as having BED and 1,875 as not having BED (non-BED). Multivariable logistic regression was used to determine whether BED status was independently related to medical comorbidities. As an exploratory analysis, significance was based on nominal p-values (p < .05). Holm's-adjusted p-values were also reported., Results: After adjusting for age, sex, education, and body mass index, BED status was found to be independently associated with four of the 15 comorbidities (i.e., impaired glucose levels (odds ratio [OR] = 1.45 (95% confidence interval [CI]: 1.12-1.87)), high triglycerides (OR = 1.28 (95% CI: 1.002-1.63)), and urinary incontinence (OR = 1.30 (95% CI: 1.02-1.66)), all being more common among the BED sample, and severe walking limitations being less common in the BED sample (OR = 0.53 (95% CI: 0.29-0.96)). With further adjustment for psychiatric/emotional health indicators, BED status was independently associated with three comorbidities (impaired glucose levels (OR = 1.36 (95% CI: 1.04-1.79)), cardiovascular disease (OR = 0.50 (95% CI: 0.30-0.86)), and severe walking limitations (OR = 0.38 (95% CI: 0.19-0.77)). However, Holm's-adjusted p-values for all variables were greater than .05., Discussion: The results suggest the possibility of a contribution of BED to risk of specific medical comorbidities in severely obese adults., (© 2015 Wiley Periodicals, Inc.)

Several techniques for the surgical management of obesity are available to bariatric surgeons. These interventions are performed more frequently with worsening of the obesity epidemic. Radiologists should be familiar with the surgical techniques, normal postoperative appearances, and potential complications for which imaging may be employed to establish a diagnosis to optimize patient care., (Copyright © 2014 Elsevier Inc. All rights reserved.)

Objective: To examine changes in depressive symptoms and treatment in the first 3 years following bariatric surgery., Methods: The longitudinal assessment of bariatric surgery-2 (LABS-2) is an observational cohort study of adults (n = 2,458) who underwent a bariatric surgical procedure at 1 of 10 US hospitals between 2006 and 2009. This study includes 2,148 participants who completed the Beck depression inventory (BDI) at baseline and ≥ one follow-up visit in years 1-3., Results: At baseline, 40.4% self-reported treatment for depression. At least mild depressive symptoms (BDI score ≥ 10) were reported by 28.3%; moderate (BDI score 19-29) and severe (BDI score ≥30) symptoms were uncommon (4.2 and 0.5%, respectively). Mild-to-severe depressive symptoms independently increased the odds (OR = 1.75; P = 0.03) of a major adverse event within 30 days of surgery. Compared with baseline, symptom severity was significantly lower at all follow-up time points (e.g., mild-to-severe symptomatology was 8.9%, 6 months; 8.4%, 1year; 12.2%, 2 years; 15.6%, 3 years; ps < 0.001), but increased between 1 and 3 years postoperatively (P < 0.01). Change in depressive symptoms was significantly related to change in body mass index (r = 0.42; P < 0001)., Conclusion: Bariatric surgery has a positive impact on depressive features. However, data suggest some deterioration in improvement after the first postoperative year. LABS-2, #NCT00465829, http://www.clinicaltrials.gov/ct2/show/NCT00465829., (Copyright © 2014 The Obesity Society.)

Liver biopsy is not routine during bariatric surgery. Alanine aminotransferase (ALT) is widely used to screen for liver disease. We assessed the relationship between ALT and pathology in biopsies from Longitudinal Assessment of Bariatric Surgery (LABS) patients with normal preoperative ALTs. Biopsies from the LABS-1 and LABS-2 studies were scored using the NASH CRN and Ishak systems. Diagnosis and histology were examined in relation to alanine aminotransferase (ALT) values. Six-hundred ninety-three suitable biopsies were evaluated. Biopsied patients had a median age of 45 years; 78.6% were female and 35.1% diabetic; median body mass index was 46 kg/m(2). Six-hundred thirty-five biopsied patients had preoperative ALTs. Median ALT was 25 IU/L (interquartile range [IQR] 19-36 IU/L); 26.6% had an ALT > 35 IU/L and 29.9% exceeded the more restrictive Prati criteria for normal. Using the Prati criteria, 7.9% of participants with normal ALT had steatohepatitis and 5.3% had ≥ stage 2 fibrosis. Logistic regression models were used to predict the probabilities of having bridging fibrosis/cirrhosis or a diagnosis of borderline/definite steatohepatitis in the unbiopsied LABS-2 sample. The proportion of biopsied participants with these findings was very similar to the modeled results from the unbiopsied cohorts. We estimated that 86.0% of participants with advanced fibrosis and 88.1% of participants with borderline/definite steatohepatitis were not biopsied and went undiagnosed. As ALT did not reliably exclude significant obesity-related liver disease in bariatric surgery patients, consideration should be given to routine liver biopsy during bariatric surgery and medical follow-up of significant hepatic pathology., (Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.)

Background: Although it is recognized that a standardized approach to reporting weight change is essential to meaningful comparisons among cohorts and across studies, consensus is lacking. This study aimed to propose a method of reporting weight change that would allow meaningful comparisons among studies of patients who underwent bariatric surgery and to demonstrate its utility using an example from the Longitudinal Assessment of Bariatric Surgery (LABS)., Methods: Relationships among several measures of weight change are described. Results from an observational, longitudinal cohort study of adults undergoing bariatric surgery and from simulation studies are used to illustrate the proposed method., Results: Baseline weight is a critical parameter when assessing weight change. Men undergoing a bariatric procedure other than gastric bypass or adjustable band tended to have greater weight loss 12 months after surgery than men undergoing gastric bypass when not accounting for baseline weight, but the opposite was found when results were adjusted for baseline weight. Simulation results show that with relatively modest sample sizes, the adjusted weight loss was significantly different between the 2 groups of men., Conclusion: A consistent metric for reporting weight loss after bariatric surgery is essential to interpret outcomes across studies and among subgroups. The baseline weight adjusted percent of weight loss (A%WL) uses a standard population (e.g., the LABS cohort) to account for differences between cohorts with respect to baseline weight, and its use can change the interpretation of results compared with an unadjusted measure., (Copyright © 2013 American Society for Metabolic and Bariatric Surgery. All rights reserved.)

Objective: Older legacy bariatric surgical procedures, including jejunocolic bypass, jejunoileal bypass, vertical banded gastroplasty, and biliopancreatic diversion, are no longer performed. Biliopancreatic diversion with duodenal switch is still performed in select centers. Although the legacy procedures are no longer performed, there are still patients who have undergone these surgeries in the past who are currently either under continuous surveillance or are being evaluated for surgical conversion or revision because of complications or weight regain. The purpose of this article is to describe the evolutionary development of various bariatric surgical techniques and the associated surgical anatomy. Because these procedures are no longer performed, only limited imaging of legacy bariatric surgeries is available for radiologic demonstration., Conclusion: Although earlier bariatric surgical techniques are no longer favored, there are still patients who underwent these procedures who require imaging evaluation for clinical follow-up or surgical revision. Understanding the radiologic-surgical anatomy of these older bariatric procedures can help in the prompt and appropriate management of these patients.