Factors associated with weight regain post-bariatric surgery: a systematic review

Are weight loss and metabolic outcomes of bariatric surgery influenced by candidate glucocorticoid receptor gene polymorphisms? A prospective study

BACKGROUND

Bariatric surgery is the most effective treatment for severe obesity. There can be variation in the degree of weight reduction following bariatric surgery. It is unknown whether single nucleotide polymorphisms (SNPs) in the glucocorticoid receptor locus (GRL) affect postoperative weight loss and metabolic outcomes.

MATERIALS/METHODS

We studied the association between selected candidate SNPs and postoperative weight loss and metabolic outcomes in patients with severe obesity undergoing bariatric surgery. The polymorphisms rs41423247 (Bcl1), rs56149945 (N363S) and rs6189/rs6190 (ER22/23EK) were analysed.

RESULTS

The 139 participants included 95 women (68.3%) and had a median (interquartile range) age of 53.0 (46.0-60.0) years and mean (SD) weight of 140.8 (28.8) kg and body mass index of 50.3 (8.6) kg/m2. At baseline, 59 patients had type 2 diabetes (T2D), 60 had hypertension and 35 had obstructive sleep apnoea syndrome treated with continuous positive airway pressure (CPAP). 84 patients (60.4%) underwent gastric bypass and 55 (39.6%) underwent sleeve gastrectomy. There were no significant differences in weight loss, glycated haemoglobin (HbA1c) or lipid profile categorized by genotype status, sex or median age. There was significant weight reduction after bariatric surgery with a postoperative BMI of 34.1 (6.8) kg/m2 at 24 months (p < 0.001).

CONCLUSION

While GRL polymorphisms with a known deleterious effect on adipose tissue mass and function may have a small, additive effect on the prevalence of obesity and related metabolic disorders in the population, we suggest that the relatively weak biological influence of these SNPs is readily overcome by bariatric surgery.

Changes in thyroid hormones predict weight regain in patients with obesity who undergo metabolic surgery

AIM

To investigate the relationship between thyroid function and weight regain in patients with obesity after metabolic surgery.

METHODS

This retrospective study enrolled 162 patients who underwent metabolic surgery. Correlations between decreases in thyroid hormone levels and changes in weight, waist circumference (WC) and the Chinese visceral adiposity index (CVAI) were assessed. Binary logistic regression and receiver operating characteristic (ROC) curves were used to identify predictors and clinically useful cut-off values, respectively.

RESULTS

The levels of thyroid-stimulating hormone (TSH) and free triiodothyronine (FT3) decreased markedly at 1 year after surgery, as did weight, body mass index (BMI), triglycerides, total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, WC and CVAI. Decreases in TSH and FT3 after metabolic surgery were associated with changes in weight, BMI and CVAI. Binary logistic regression and ROC curve analyses confirmed that decreases in TSH can predict good weight loss after metabolic surgery to some extent. Finally, binary logistic regression and ROC curve analyses confirmed that changes in TSH can predict weight regain after metabolic surgery.

CONCLUSIONS

Changes in TSH and FT3 after metabolic surgery were correlated with changes in weight and CVAI. Changes in thyroid hormones can predict weight regain in patients with obesity who underwent metabolic surgery.

Predicting Inadequate Weight Loss After Bariatric Surgery: Derivation and Validation of a Four Factor Model

INTRODUCTION

Weight loss following bariatric surgery is variable and predicting inadequate weight loss is required to help select patients for bariatric surgery. The aim of the present study was to determine variables associated with inadequate weight loss and to derive and validate a predictive model.

METHODS

All patients who underwent laparoscopic sleeve gastrectomy and Roux-en-Y gastrectomy (2008-2022) in a tertiary referral centre were followed up prospectively. Inadequate weight loss was defined as excess weight loss (EWL) < 50% by 24 months. A top-down approach was performed using multivariate logistic regression and then internally validated using bootstrapping. Patients were categorised into risk groups.

RESULTS

A total of 280 patients (median age, 49 years; M:F, 69:211) were included (146 LSG; 134 LRYGB). At 24 months, the median total weight loss was 30.9% and 80.0% achieved EWL ≥ 50% by 24 months. Variables associated with inadequate weight loss were T2DM (OR 2.42; p = 0.042), age 51-60 (OR 1.93, p = 0.006), age > 60 (OR 4.93, p < 0.001), starting BMI > 50 kg/m² (OR 1.93, p = 0.037) and pre-operative weight loss (OR 3.51; p = 0.036). The validation C-index was 0.75 (slope = 0.89). Low, medium and high-risk groups had a 4.9%, 16.7% and 44.6% risk of inadequate weight loss, respectively.

CONCLUSIONS

Inadequate weight loss can be predicted using a four factor model which could help patients and clinicians in decision-making for bariatric surgery.

Survey on Interaction Between Nutrient Status and Selected Polymorphisms in Association with Weight Loss of Patients with Severe Obesity Underwent Bariatric Surgery

BACKGROUND

There is little information about the effect of single nucleotide polymorphisms (SNP) and nutritional status and weight loss after bariatric surgery. This study investigated the interactive effect of eight obesity-related SNPs and nutritional status on weight loss after Roux-en-Y gastric bypass (RYGB).

METHOD

This is a case-control study. After 1-year follow-up, the patients who underwent RYGB were dividing into two groups. The case group consisted of patients who lost more than 50% of their excess body weight (EBW%) 1 year after the surgery. The control group included patients who lost < 50% of EBW at same time frame. Then, the relationship between eight SNPs related to UCP2, FTO, LEPR, GHRL, and NPY genes with weight loss were checked.

RESULTS

In this study, 160 patients were recruited. The median of age for case and control group were 43 and 42 respectively. The presence of mutant variant NPYrs16147 had a significant relationship in terms of weight loss between the two groups (P > 0.05). In dominant model, two SNPs, UCP2 rs659366 and UCP2 rs660339, showed protective effect of the vitamin D deficiency.

CONCLUSION

In conclusion, the presence mutant variant of NPYrs16147 is directly related to the incidence of weight loss greater than 50% of EBW. However, it is apparent individual behavioral, dietary, and other factors may have more influence on weight loss among patients underwent RYGB.

COVID-19-Related Increases in Depressive and Anxious Symptoms Are Associated with Maladaptive Eating Among Patients up to 4 years Post-bariatric Surgery

INTRODUCTION

Depressive and anxious symptoms and maladaptive eating behaviors fluctuate with stressful events for patients seeking bariatric surgery. These associations are less clear for patients postoperatively. Using the COVID-19 pandemic as a frame, we examined associations between changes in depressive and anxious symptoms and maladaptive eating behaviors between up to four years postoperatively.

METHODS

Participants (N = 703) who underwent surgery between 2018 and 2021 completed web-based questionnaires between 2021 and 2022. Demographic and surgical data were obtained from electronic health records. Participants reported whether depressive and anxious symptoms increased or were stable/decreased during the COVID-19 pandemic, and completed eating behavior measures.

RESULTS

Many participants reported increased depressive (27.5%) and anxious (33.7%) symptoms during the COVID-19 pandemic. Compared to those who reported stable or decreased symptoms, these participants were as follows: (1) more likely to endorse presence of binge, loss-of-control, graze, and night eating; (2) reported higher emotional eating in response to anger and frustration, depression, and anxiety; and (3) reported higher driven and compulsive eating behaviors. Frequency of binge, loss-of-control, graze, and night eating episodes did not differ between groups (e.g., increased vs. stable/decreased anxious symptoms) among participants who endorsed any episodes.

CONCLUSION

A large portion of the sample reported increased depressive and anxious symptoms during the COVID-19 pandemic, and these increases were associated with maladaptive eating behaviors. Depressive and anxious symptoms and eating behaviors should be assessed postoperatively as significant stressors may be associated with increased distress and maladaptive eating behaviors that can affect postoperative outcomes. Postoperative interventions may be useful at simultaneously targeting these concerns.

Exploring Social Support Dynamics After Bariatric Surgery: Insights From Patients and Providers

INTRODUCTION

Weight loss after bariatric surgery is impacted by several factors, and social support is one of them. Our objective was to characterize patient and provider perceptions about social support after bariatric surgery.

METHODS

We reported a secondary analysis of qualitative data acquired from semi-structured interviews conducted from January-November 2020 with bariatric surgery patients and providers. Participants included primary care providers, health psychologists, registered dietitians, bariatric surgeons, and patients with at least 1 y of follow-up after their bariatric procedure. Interview guides were designed using a hybrid of Andersen's Behavioral Model of Health Services and Torain's Framework for Surgical Disparities. Using directed content analysis, study team members generated codes, which were categorized into themes about social support pertaining to dietary habits, physical activity, and follow-up care.

RESULTS

Forty-five participants were interviewed, including 24 patients (83% female; 79% White; mean age 50.6 ± 10.7 y) and 21 providers (six primary care providers, four health psychologists, five registered dieticians, and six bariatric surgeons). We identified four themes relating to social support affecting weight loss after surgery: (1) family involvement in helping patients adjust to the bariatric diet, (2) engagement in activities with partners/friends, (3) help with transportation to appointments, and (4) life stressors experienced by patients within their social relationships.

CONCLUSIONS

Continued assessment of interpersonal factors after bariatric surgery is essential for weight loss maintenance. Providers can contribute by reinforcing the facilitators of social support and making referrals that may help patients overcome barriers to social support for sustained weight loss after surgery.

Long-term outcomes of laparoscopic sleeve gastrectomy in Denmark from 2010 to 2016: a nationwide cohort study

BACKGROUND

Bariatric surgery is the most effective treatment of morbid obesity and obesity-related conditions. Laparoscopic sleeve gastrectomy (LSG) has become increasingly popular in Denmark and worldwide.

OBJECTIVE

To evaluate long-term outcomes including postoperative complications after LSG.

SETTING

University Hospitals, Denmark.

METHODS

This was a nationwide multicenter cohort study including all patients who underwent LSG during 2010 to 2016 in Denmark. Data were collected from the Danish Obesity Surgery Registry and medical records. Representatives from all public bariatric centers in Denmark registered information on demography, indication, preoperative tests, operative information, weight loss, status of co-morbidities, and early and late complications.

RESULTS

In total, 541 patients were included in the study. Median follow-up was 6 years, and 536 patients (99%) were available at the end of follow-up. The patients achieved a persistent weight loss. Quality of life significantly improved after both 12 and 24 months. Overall, 3% of the patients had a major complication ≤30 days after the procedure and 3% underwent reoperation. One in 5 patients (22%) had an early minor complication. In the long term, 3% of the patients had a major complication and 24% of the patients had ≥1 minor complication. The most common surgery-related healthcare contacts addressed gastroesophageal reflux, weight recurrence, and stenosis symptoms.

CONCLUSIONS

Patients after LSG achieved sufficient weight loss and improved quality of life. The procedure was safe with low risk of early and late major complications. However, there was a high frequency of early and late minor complications in 22% and 24% of the patients, respectively.

Assessment of guidelines for bariatric and metabolic surgery: a systematic review and evaluation using appraisal of guidelines for research and evaluation II (AGREE II)

BACKGROUND

In recent years, multiple guidelines on bariatric and metabolic surgery were published, however, their quality remains unknown, leaving providers with uncertainty when using them to make perioperative decisions. This study aims to evaluate the quality of existing guidelines for perioperative bariatric surgery care.

METHODS

A comprehensive search of MEDLINE and EMBASE were conducted from January 2010 to October 2022 for bariatric clinical practice guidelines. Guideline evaluation was carried out using the Appraisal of Guidelines for Research and Evaluation II (AGREE II) framework.

RESULTS

The initial search yielded 1483 citations, of which, 26 were included in final analysis. The overall median domain scores for guidelines were: (1) scope and purpose: 87.5% (IQR: 57-94%), (2) stakeholder involvement: 49% (IQR: 40-64%), (3) rigor of development: 42.5% (IQR: 22-68%), (4) clarity of presentation: 85% (IQR: 81-90%), (5) applicability: 6% (IQR: 3-16%), (6) editorial independence: 50% (IQR: 48-67%), (7) overall impressions: 48% (IQR: 33-67%). Only six guidelines achieved an overall score >70%.

CONCLUSIONS

Bariatric surgery guidelines effectively outlined their aim and presented recommendations. However, many did not adequately seek patient input, state search criteria, use evidence rating tools, and consider resource implications. Future guidelines should reference the AGREE II framework in study design.

Differences in the Impact of Obesity and Bariatric Surgery on Patients Hospitalized for Atrial Flutter and Atrial Fibrillation: A Nationwide Analysis, 2016-2020

BACKGROUND

The "obesity paradox" claims that although obesity is a risk factor for atrial fibrillation, obese patients have lower inpatient mortality when admitted due to atrial fibrillation. This study aims to analyze if the obesity paradox still holds true after weight loss from bariatric surgery.  Methods: This study analyzed discharge data from the National Inpatient Sample, 2016-2020. Patients admitted due to atrial fibrillation or atrial flutter, with or without obesity, and with or without a past medical history of bariatric surgery were identified using ICD-10-CM and ICD-10-PCS codes. The primary outcome was mortality. Secondary outcomes included length of stay, resource utilization, necessity for endotracheal intubation, and necessity for cardioversion. STATA v.13 was used for univariate and multivariate analysis (StataCorp LLC, Texas, USA).

RESULTS

Among 2,292,194 patients who had a primary diagnosis of atrial fibrillation or atrial flutter, 494,830 were obese and 25,940 had bariatric surgery. Mortality was not significantly different in post-bariatric surgery patients when compared to the general population (OR 0.76; 95% [CI 0.482-1.2; p=0.24]). Mortality was significantly lower in obese patients when compared to the general population (OR 0.646; 95% [CI 0.583-0.717; p<0.001]). Therefore, post-bariatric surgery patients had a higher mortality than obese patients when compared to the general population. Obese patients spent more days in the hospital (regression 0.219; 95% [CI 0.19-0.248, p<0.001]), had higher resource utilization (regression 3491.995; 95% [CI 2870.085-4113.905, p<0.001]), more cardioversions (OR 1.434; 95% [CI 1.404-1.465; p<0.001]), and no difference in endotracheal intubation rate (OR 1.02; 95% [CI 0.92-1.127; p=0.724]) when compared to the general population. Post-bariatric patients had no difference in length of stay (regression -0.053; 95% [CI -0.137-0.031; p=0.218]) and resource utilization (regression 577.297; 95% [CI -1069.801-2224.396; p=0.492]), fewer endotracheal intubations (OR 0.583; 95% [CI 0.343-0.99; p=0.046]), and more cardioversions (OR 1.223; 95% [CI 1.134-1.32; p<0.001]) when compared to the general population.

CONCLUSION

Compared to the general population, post-bariatric patients had higher inpatient mortality than obese patients when admitted due to atrial fibrillation or atrial flutter. This research reinforces the presence of the obesity paradox following bariatric surgery with respect to mortality.

Adjuvant and Neo-Adjuvant Anti-Obesity Medications and Bariatric Surgery: A Scoping Review

PURPOSE OF REVIEW

To comprehensively summarize the current body of literature on the topic of adjuvant and neoadjuvant pharmacotherapy used in combination with bariatric surgery.

RECENT FINDINGS

Anti-obesity medications (AOMs) have been used since the mid-1900s; however, their use in combination with bariatric surgery is a newer area of research that is rapidly growing. Pharmacotherapy may be used before (neoadjuvant) or after (adjuvant) bariatric surgery. Recent literature suggests that adjuvant AOMs may address weight regain and inadequate weight loss following bariatric surgery. Research on neoadjuvant AOM used to optimize weight loss before bariatric surgery is more limited. A literature review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Thirty-four studies were included after screening and exclusion of irrelevant records. Included studies were as follows: seven prospective studies on adjuvant AOM use, 23 retrospective studies on adjuvant AOM use, one prospective study on adjuvant and neoadjuvant AOM use, one retrospective study on adjuvant or neoadjuvant AOM use, one prospective study on neoadjuvant AOM use, and one case series on neoadjuvant AOM use. In the following scoping review, each of these studies is discussed with the goal of presenting a complete synthesis of the current body of literature on AOM use in combination with bariatric surgery.

Care or sabotage? A reflexive thematic analysis of perceived partner support throughout the bariatric surgery journey

OBJECTIVE

Social support is mostly seen as a positive resource for many health outcomes. However, some research indicates that weight loss may disrupt the equilibrium of relationships and highlights the potential for a more negative form of social support. This qualitative study aimed to explore bariatric surgery (BS) patients' perceptions of the way in which their current or previous partner supported them throughout their BS journey.

DESIGN

BS patients (N = 30) participated in semi-structured interviews.

METHODS

The data were analysed using an inductive approach to reflexive thematic analysis.

RESULTS

Four themes were derived from the data. While two themes reflected social support as a form of caring (Mutual Investment and Positive Reinforcements), the other two themes indicated aspects of sabotage (Feeder Behaviours and Negative Reactions to Weight Loss Attempts and Successes). Transcending these themes was the notion of Bariatric Surgery as an Opportunity or Threat to the Relationship.

CONCLUSIONS

Some patients perceived social support as a positive resource in BS success involving Mutual Investment from their partners and being offered Positive Reinforcements for changes in their weight status and wellbeing. Some, however, described more negative aspects of support which had undermined their BS goals, either unintentionally or intentionally, through acts of sabotage including Feeder Behaviours and Negative Reactions to Weight Loss Attempts and Successes. Future research should develop interventions to help prepare the partners of those undergoing BS for the changes to both their partner's weight status and the dynamics of their relationship.

Long-term weight loss of distal gastric bypass is moderately superior compared to proximal gastric bypass in patients with a BMI of 37-44 Kg/m2

PURPOSE

The laparoscopic Roux-en-Y gastric bypass (LRYGB) is one of the standard procedures in metabolic surgery. Different limb lengths have been proposed in the past to maximize weight loss (WL) and reduce metabolic complications. Distal gastric bypass surgery with a very short common channel (CC) (up to 100 cm) has been often criticized due to frequent side effects such as malnutrition, bone weakening and short-bowel syndrome. We introduced a modified version of a distal LRYGB with a 50-70 cm long biliopancreatic limb (BPL) and an intermediate short CC (120-150 cm). Our primary goal was to compare the long-term WL between distal and proximal LRYGB in two cohorts of patients. Secondary outcomes were weight regain (WR), insufficient weight loss (IWL), postoperative complications and metabolic changes 5 years after surgery.

METHODS

In this retrospective study we collected data from 160 patients operated between 2014 and 2015, with a BMI of 37-44 Kg/m2. 101 patients underwent a distal and 59 patients a proximal LRYGB in two bariatric centers. WL was calculated as percent of excess of BMI loss (%EBMIL), loss of body mass index (Delta-BMI), percent of excess weight loss (%EWL) and percent of total weight loss (%TWL). Data were collected 3, 6, 9, 12, 24, 48 and 60 months after surgery.

RESULTS

The distal LRYGB resulted in significantly better 5-year-WL compared to the proximal bypass in terms of %EBMIL (median at 5 years: 83% vs. 65%, p = 0.001), %TWL (median at 5 years: 32% vs. 26%, p = 0.017) and %EWL (median at 5 years: 65% vs. 51%, p = 0.029), with equal major complications and metabolic alterations. In addition, WR was significantly lower in patients with distal bypass (18% vs. 35%, p = 0.032).

CONCLUSIONS

Distal LYRGB with a 120-150 long CC results in better WL and WL-maintenance compared to proximal LRYGB without major side effects after five years.

The Pseudotumor Cerebri Syndrome

Pseudotumor cerebri syndrome is a syndrome of increased cerebrospinal fluid pressure without ventriculomegaly, mass lesion, or meningeal abnormality. It is either primary (idiopathic intracranial hypertension, IIH) or secondary. A secondary cause is unlikely when adhering to the diagnostic criteria. Permanent visual loss occurs if undetected or untreated, and the associated headaches may be debilitating. Fulminant disease may result in blindness despite aggressive treatment. This study addresses the diagnosis and management of IIH including new insights into the pathobiology of IIH, updates in therapeutics and causes of overdiagnosis.

Using Positive Psychology to Address Emotional Barriers to Physical Activity After Bariatric Surgery: Proof-of-Concept Trial of the Gaining Optimism After Weight Loss Surgery (GOALS) Project

Physical activity promotes health and longevity after metabolic/bariatric surgery (MBS), but most patients do not meet recommended levels. The Gaining Optimism After weight Loss Surgery (GOALS) Project was a positive psychological intervention designed to address common emotional barriers to physical activity in patients who have recently undergone MBS (e.g., low confidence around exercise, internalized weight bias, fear of injury) and use motivational interviewing and standard behavior change techniques (e.g., self-monitoring) to increase physical activity. This single-arm proof-of-concept trial was designed to refine the intervention, test feasibility and acceptability, and explore pre-post changes in behavioral and psychological outcomes. Participants were 12 adults 6-12 months post-MBS (M age of 46, 58% female, 67% non-Hispanic white). GOALS was a 10-week telephone counseling program that introduced new positive psychological skills and physical activity topics each week. Participants tracked physical activity with a Fitbit and set weekly goals. Results showed that the intervention was feasible (85% of sessions completed) and acceptable (average participant ratings of session ease and utility above 8.0 on a 0-10 scale). There were medium-to-large effect size improvements in physical activity and psychological well-being (e.g., depressive symptoms). The GOALS intervention will next be tested in a pilot randomized controlled trial with longer-term follow-up to assess its effect more robustly.

Utilization of Anti-obesity Medications After Bariatric Surgery: Analysis of a Large National Database

PURPOSE

A significant proportion of patients experience insufficient weight loss or weight regain after bariatric surgery. There is a paucity of literature describing anti-obesity medication (AOM) use following bariatric surgery. We sought to identify prevalence and trends of AOM use following bariatric surgery.

MATERIALS AND METHODS

We utilized the IBM Explorys® database to identify all adults with prior bariatric surgery (Roux-en-Y gastric bypass or sleeve gastrectomy). Those prescribed AOMs (semaglutide, liraglutide, topiramate, phentermine/topiramate, naltrexone/bupropion, orlistat) within 5 years of surgery were further identified. Data was analyzed to characterize AOM utilization among different age, demographic, and comorbid populations.

RESULTS

A total of 59,160 adults with prior bariatric surgery were included. Among AOMs studies, prevalence of use was highest for topiramate (8%), followed by liraglutide (2.9%), phentermine/topiramate (1.03%), naltrexone/bupropion (0.95%) semaglutide (0.52%), and orlistat (0.17%). Age distribution varied, with the highest utilization among those age 35-39 years for topiramate, 40-44 years for phentermine/topiramate and naltrexone/bupropion, 45-49 years for semaglutide, and 65-69 years for liraglutide and orlistat. African American race was associated with higher utilization across all AOMs. Among comorbidities, hypertension, hyperlipidemia, and diabetes mellitus were most associated with AOM use.

CONCLUSION

Despite a relatively high incidence of weight regain, AOMs are underutilized following bariatric surgery. It is imperative that barriers to their use be addressed and that AOMs be considered earlier and more frequently in patients with insufficient weight loss or weight regain after bariatric surgery.

Intensive pre-operative information course (IPIC) and pre-operative weight loss results in long-term sustained weight loss following bariatric surgery: 11 years results from a tertiary referral centre

INTRODUCTION

Outcomes of long-term (5-10-year) weight loss have not been investigated thoroughly and the role of pre-operative weight loss on long-term weight loss, among other factors, are unknown. Our regional bariatric service introduced a 12 week intensive pre-operative information course (IPIC) to optimise pre-operative weight loss and provide education prior to bariatric surgery. The present study determines the effect of pre-operative weight loss and an intense pre-operative information course (IPIC), on long-term weight outcomes and sustained weight loss post-bariatric surgery.

METHODS

Data were collected prospectively from a bariatric center (2008-2022). Excess weight loss (EWL) ≥ 50% and ≥ 70% were considered outcome measures. Survival analysis and logistic regression identified variables associated with overall and sustained EWL ≥ 50% and ≥ 70%.

RESULTS

Three hundred thirty-nine patients (median age, 49 years; median follow-up, 7 years [0.5-11 years]; median EWL%, 49.6%.) were evaluated, including 158 gastric sleeve and 161 gastric bypass. During follow-up 273 patients (80.5%) and 196 patients (53.1%) achieved EWL ≥ 50% and ≥ 70%, respectively. In multivariate survival analyses, pre-operative weight loss through IPIC, both < 10.5% and > 10.5% EWL, were positively associated with EWL ≥ 50% (HR 2.23, p < 0.001) and EWL ≥ 70% (HR 3.24, p < 0.001), respectively. After a median of 6.5 years after achieving EWL50% or EWL70%, 56.8% (154/271) had sustained EWL50% and 50.6% (85/168) sustained EWL70%. Higher pre-operative weight loss through IPIC increased the likelihood of sustained EWL ≥ 50% (OR, 2.36; p = 0.013) and EWL ≥ 70% (OR, 2.03; p = 0.011) at the end of follow-up.

CONCLUSIONS

IPIC and higher pre-operative weight loss improve weight loss post-bariatric surgery and reduce the likelihood of weight regain during long-term follow-up.

Revisional one-anastomosis gastric bypass for failed laparoscopic sleeve gastrectomy

The study aimed to evaluate the mid-term weight loss outcomes and complications of revisional one-anastomosis gastric bypass (OAGB) following failed laparoscopic sleeve gastrectomy (LSG). A total of 586 patients underwent LSG from January 2010 to February 2018. Revisional OAGB (rOAGB) was performed in 22 (3.8%) patients. A retrospective analysis of prospectively collected data from 20 patients with at least 12 months of follow-up after the revisional OAGB was carried out. The indications for revisional surgery were as follows: insufficient weight loss-4 (20%), weight regain-13 (65%), weight regain and symptoms of gastroesophageal reflux disease (GERD)-2 (10%), and dysphagia with gastroesophageal reflux-1 (5%). The mean interval between the LSG and rOAGB was 35.3 ± 15.4 months (range 4-64). The mean follow-up time after rOAGB was 45.5 ± 17.1 months (range 12-54). At the end of the follow-up after rOAGB, %TWL was 26.4 ± 8.9%, and %EWL was 58.5 ± 21.6%, based on pre-LSG body weight. In all three patients with intractable GERD, the clinical symptoms of reflux retreated after revisional OAGB. The overall complication rate was 20%. In conclusion, the main indications for revision after LSG are weight regain, insufficient weight loss, and intractable GERD. Revisional OAGB emerges as a viable surgical alternative for unsuccessful LSG, presenting notable weight loss outcomes; however, it may be linked to an increased incidence of complications.

Patients' perspectives on weight recurrence after bariatric surgery: a single-center survey

BACKGROUND

Weight recurrence (WR) affects nearly 20% of patients after bariatric surgery and may decrease its benefits, affecting patients' quality of life negatively. Patient perspectives on WR are not well known.

OBJECTIVES

Assess patient needs, goals, and preferences regarding WR treatment.

SETTING

Single MBSAQIP-accredited academic center, and online recruitment.

METHODS

An 18-item, web-based survey was distributed to adults seeking treatment for WR after a primary bariatric surgery (PBS), in addition to online recruitment, between 2021 and 2023. Survey items included somatometric data, questions about the importance of factors for successful weight loss, procedure decision-making, and treatment expectations.

RESULTS

Fifty-six patients with > 10% increase from their nadir weight were included in the study. Patients had initially undergone Roux-en-Y gastric bypass (62.5%), sleeve gastrectomy (28.6%), adjustable gastric banding (3.6%), or other procedures (5.3%). When assessing their satisfaction with PBS, 57.1% were somewhat/extremely satisfied, 33.9% somewhat/extremely dissatisfied, while 8.9% were ambivalent. Patients considered the expected benefits (for example, weight loss) as the most important factor when choosing a treatment option for WR. Patient goals included "feeling good about myself" (96.4% very/extremely important), "being able to resume activities I could not do before" (91% very/extremely important), and "improved quality of life" and "-life expectancy" (> 90% very/extremely important). Finally, RBS, lifestyle modification with peer support, and anti-obesity medication were ranked as first treatment options for WR by 40%, 38.8%, and 29.8% of the respondents, respectively.

CONCLUSIONS

Patients considered weight loss as the most important factor when choosing treatment modality for WR, with RBS and lifestyle changes being preferred over weight-loss medications. Large prospective randomized trials are needed to counsel this patient population better.

The Trajectory of Revisional Bariatric Surgery: Open to Laparoscopic to Robotic

Metabolic and bariatric surgery (MBS) is the most effective therapeutic intervention for patients with obesity, with sleeve gastrectomy (SG) being the most commonly performed primary MBS procedure. Long-term studies have demonstrated that 15-20% of patients require revisional bariatric surgery (RBS) due to weight-related issues or surgical complications. Despite the gold standard being laparoscopic revision, there are other available approaches such as open or robotic-assisted. An extensive literature review was performed for articles from their inception to February 2024. A descriptive review of MBS procedures (SG, Roux-en-Y gastric bypass (RYGB), single anastomosis duodeno-ileostomy (SADI) and biliopancreatic diversion-duodenal switch (BPD-DS)) was carried out to report and compare outcomes between primary and revisional bariatric surgery. A similar review was conducted to compare outcomes of revisional approaches (open, laparoscopic, robotic). RYGB remains the dominant RBS with a similar safety profile compared to revisional SADI and BPD-DS. In terms of the RBS surgical approach, all three options showed comparable short and long-term outcomes, with robotic RBS being associated with longer operative time and variable length of stay. Additional long-term studies are required to further validate our conclusions.

Outcome comparison between primary and revisional bariatric surgery: A propensity-matched analysis

BACKGROUND

Revisional bariatric procedures for weight recurrence are rising but are considered higher risk and less effective than primary bariatric procedures. This study aimed to compare clinical outcomes between primary and revisional bariatric surgery for weight recurrence.

METHODS

Prospectively collected data from adult patients who underwent revisional or primary bariatric surgery from 2016 to 2020 in an academic institution were reviewed. Roux-en-Y gastric bypass and sleeve gastrectomy were performed primarily or as conversion procedures after laparoscopic adjustable gastric band, vertical banded gastroplasty, and sleeve gastrectomy. 1:1 propensity score matching was performed between revisional bariatric surgery and primary bariatric surgery, and logistic regression analysis was used to compare up to 2-year weight loss and comorbidity resolution outcomes.

RESULTS

A total of172 cases (86 revisional bariatric surgery versus 86 primary bariatric surgery) were included. Groups were matched for age, sex, preoperative body mass index, bariatric procedure, diabetes, hypertension, and obstructive sleep apnea. Procedure duration (203 ± 78 vs 154 ± 69 minutes; P < .001) and length of stay (2.3 ± 2.1 vs 1.7 ± 1 days; P = .02) were longer for revisional bariatric surgery versus primary bariatric surgery, respectively. Total weight loss was less in revisional bariatric surgery compared with primary bariatric surgery at 1 year (23 ± 10% vs 32 ± 9%; P < .001) and 2 years (21 ± 12.% vs 32 ± 10%; P < .001) of follow-up; however, no differences were detected in postoperative occurrences, emergency department visits, readmissions, reintervention and reoperation rates, and comorbidity resolution.

CONCLUSION

Although revisional bariatric surgery was associated with longer operation times, prolonged hospitalization, and lower weight loss than primary bariatric surgery, it was accomplished safely and led to substantial weight loss and comorbidity resolution. This information can guide patient counseling before revisional surgery for weight recurrence.

Bariatric Surgery and Weight Gain: Bibliometric Analysis

PURPOSE

Bariatric surgery is the most successful method for weight loss; however, weight regain may occur in the long term. It depends on eating habits and self-management. The study aimed to conduct a bibliometric analysis on bariatric surgery and weight gain and to determine the content and trends in the literature.

MATERIALS AND METHODS

The scan was performed using the keywords "bariatric surgery" and "weight gain" in the Web of Science database. The years of publications and citations, the distribution of publications according to journals, research areas, and countries, co-authorship, co-occurrence, and co-citation were analyzed. The VOSviewer program was used for the analysis. Grey literature, books, and book sections were not included.

RESULTS

A total of 988 articles were included. The results showed that the most published and cited journal was Obesity Surgery, and the most published country was the USA with 313 publications. The most commonly used keywords were "bariatric surgery," "obesity," and "weight regain." Harvard University was the most publishing institution with 50 publications. The most published year was 2022 since 1993 (n:118).

CONCLUSION

In the study, current publications and research trends related to bariatric surgery and weight gain were analyzed through bibliometric analysis. It was concluded that weight regain after bariatric surgery should be focused on since it adversely affects the life of individuals, reduces the probability of success of surgical treatment, and imposes additional burdens on the healthcare system.

Plasma SHBG Levels as an Early Predictor of Response to Bariatric Surgery

BACKGROUND

Obesity is a growing global health problem, and currently, bariatric surgery (BS) is the best solution in terms of sustained total weight loss (TWL). However, a significant number of patients present weight regain (WR) in time. There is a lack of biomarkers predicting the response to BS and WR during the follow-up. Plasma SHBG levels, which are low in obesity, increase 1 month after BS but there is no data of plasma SHBG levels at long term. We performed the present study aimed at exploring the SHBG role in predicting TWL and WR after BS.

METHODS

Prospective study including 62 patients with obesity undergoing BS. Anthropometric and biochemical variables, including SHBG were analyzed at baseline, 1, 6, 12, and 24 months; TWL ≥ 25% was considered as good BS response.

RESULTS

Weight loss nadir was achieved at 12 months post-BS where maximum SHBG increase was reached. Greater than or equal to 25% TWL patients presented significantly higher SHBG increases at the first and sixth months of follow-up with respect to baseline (100% and 150% respectively, p = 0.025), than < 25% TWL patients (40% and 50% respectively, p = 0.03). Also, these presented 6.6% WR after 24 months. The first month SHBG increase predicted BS response at 24 months (OR = 2.71; 95%CI = [1.11-6.60]; p = 0.028) and TWL in the 12th month (r = 0.330, p = 0.012) and the WR in the 24th (r =  - 0.301, p = 0.028).

CONCLUSIONS

Our results showed for the first time that increase in plasma SHBG levels within the first month after BS is a good predictor of TWL and WR response after 2 years.

Short-term effects of semaglutide among patients with obesity with and without food addiction: an observational study

INTRODUCTION

Food addiction (FA) is highly prevalent among people with obesity (PwO) and may constitute a key factor in weight loss failure or weight regain. GLP-1 analogues have been shown to act on the mesolimbic system, which is related to hedonic overeating and substance abuse. We aimed to study the effects of low doses of semaglutide on FA symptomatology and to evaluate whether the presence of FA have a negative impact on weight loss despite treatment with semaglutide.

METHODS

One hundred and thirteen PwO (45.5 ± 10.2 years) were evaluated anthropometrically baseline and after four months of treatment with semaglutide. PwO were evaluated for the presence of FA by completing The Spanish version of the Yale Food Addiction Scale 2.0 questionnaire (YFAS 2.0).

RESULTS

Baseline BMI and fat mass (%) were greater among PwO with FA (35.8 ± 4.5 vs 33 ± 3.9 kg/m2and 44.2 ± 6.5 vs 40.1 ± 7.9%; p = .01). After four months of treatment with semaglutide, the prevalence of FA diminished from 57.5% to 4.2% (p < .001). The percentage of weight loss (6.9 ± 12.7 vs 5.3 ± 4.6%; p = .4) and the proportion of fat mass loss (2 ± 9 vs 1.6 ± 3.1%; p = .7) were comparable between PwO with and without FA. No differences regarding side effects and treatment discontinuations were seen between the two groups.

CONCLUSION

Semaglutide is an effective tool for the amelioration of FA symptomatology among PwO. Despite PwO with FA had greater basal BMI and fat mass, semaglutide showed similar results compared to PwO without FA in terms of weight and fat mass loss at short term.

Weight Regain after Metabolic Surgery: Beyond the Surgical Failure

Patients undergoing metabolic surgery have factors ranging from anatomo-surgical, endocrine metabolic, eating patterns and physical activity, mental health and psychological factors. Some of the latter can explain the possible pathophysiological neuroendocrine, metabolic, and adaptive mechanisms that cause the high prevalence of weight regain in postbariatric patients. Even metabolic surgery has proven to be effective in reducing excess weight in patients with obesity; some of them regain weight after this intervention. In this vein, several studies have been conducted to search factors and mechanisms involved in weight regain, to stablish strategies to manage this complication by combining metabolic surgery with either lifestyle changes, behavioral therapies, pharmacotherapy, endoscopic interventions, or finally, surgical revision. The aim of this revision is to describe certain aspects and mechanisms behind weight regain after metabolic surgery, along with preventive and therapeutic strategies for this complication.

Enhancing Clinical Success Through Intensive Dietary Support in Bariatric Patients: a Retrospective Study in Asian Population

BACKGROUND

Weight loss surgery is an established intervention for obesity and related conditions, ensuring sustained weight reduction and improved comorbidities. Post-bariatric surgery, maintaining nutritional adequacy and weight loss necessitates ongoing, intensive dietary support. This research aims to discern the impact of standard care vs. intensive dietary support on outcomes following bariatric surgery within an Asian demographic. This study aims to research the part that intensive dietary support plays in contrast to standard care in altering weight loss and BMI change following bariatric surgery.

METHODS

A retrospective analysis of medical records from a Malaysian tertiary care hospital documented bariatric surgeries conducted from January 2020 to January 2022. Rigorous criteria selected 200 patients from 327, evenly split between standard care and intensive dietary support groups. The latter underwent six mandatory visits with a surgeon and a dietitian in the initial 3 months post-surgery. A dual-review mechanism was implemented for data interpretation, increasing robustness, and reducing biases in our findings.

RESULTS

At 6 and 12 months, the intensive dietary support group exhibited significantly greater weight loss and BMI reduction (p < 0.01). Postoperative complications did not significantly differ between groups.

CONCLUSION

In an Asian population, intensive dietary support enhances weight loss and BMI reduction compared to standard care after bariatric surgery.

Visceral adipose tissue adiponectin predicts excess weight loss after bariatric surgery in females with severe obesity

OBJECTIVE

Bariatric surgery not always results in satisfactory excess weight loss (EWL) in severe obesity. Given the economic and clinical costs of bariatric surgery failure, defining predictors of successful EWL represents a relevant clinical issue for the health system to select patients benefiting from operation.

METHODS

By ELISA and Western blot analyses, we assessed the predicting value of pre-operative adiponectin (APN) locally produced in abdominal visceral (VAT) and subcutaneous (SAT) adipose tissue versus plasma levels as a novel sex-linked biomarker of EWL at different time points of follow up (6-24 months) after bariatric surgery in 43 patients (56% females) affected by severe obesity undergoing a small pilot observational study.

RESULTS

VAT-APN was lower in females and represented the only marker significantly correlated with EWL. In females, VAT-APN in the distribution upper quartile but not baseline BMI retained a statistically significant correlation with EWL at any time points (6-24 months) at multivariate analysis. The best VAT-APN cut-off value to predict 95% EWL at 12 months from surgery (98% accuracy, 100% sensitivity, 94% specificity, p = 0.010) was 5.1 µg/mg.

CONCLUSIONS

In this very preliminary study, APN in VAT rather than its circulating or subcutaneous levels predicts EWL after bariatric surgery as an independent factor in the female sex only, thus contributing to identify those patients who could much benefit from surgery.

Suboptimal Weight Loss 13 Years After Roux-en-Y Gastric Bypass Is Associated with Blunted Appetite Response

PURPOSE

Bariatric surgery remains the most efficient treatment to achieve a sustained weight loss. However, a large proportion of patients experience suboptimal weight loss (SWL). The exact mechanisms involved remain to be fully elucidated, but the homeostatic appetite control system seems to be involved. The aim of this study was, therefore, to compare the plasma concentration of gastrointestinal hormones, and appetite ratings, between those experiencing SWL and optimal weight loss (OWL) after Roux-en-Y gastric bypass (RYGB).

MATERIALS AND METHODS

Fifty participants from the Bariatric Surgery Observation Study (BAROBS) experiencing either SWL or OWL (< or ≥ 50% of excess weight loss (EWL), respectively) > 13 years post-RYGB were compared to 25 non-surgical controls. Plasma concentrations of acylated ghrelin (AG), total glucagon-like peptide-1 (GLP-1), total peptide YY (PYY), cholecystokinin (CCK), and subjective ratings of hunger, fullness, desire to eat (DTE), and prospective food consumption (PFC) were assessed in the fasting and postprandial (area under the curve (AUC)) states.

RESULTS

Those experiencing OWL presented with higher basal AG and GLP-1 iAUC, and lower AG iAUC compared with SWL and controls. Additionally, both bariatric groups presented with higher PYY and CCK iAUC compared to controls. PFC tAUC was also lower in OWL compared to the SWL group. Total weight loss was positively correlated with GLP-1 tAUC and negatively correlated with fasting and tAUC DTE and PFC tAUC.

CONCLUSIONS

SWL > 13 years post-RYGB is associated with lower basal ghrelin, as well as a weaker satiety response to a meal. Future studies should investigate the causality of these associations.

Attitudes and Behaviors towards Food and Weight in Late Pregnancy: A Comparative Approach between Individuals with and without Previous Bariatric Surgery

The aims of this study were to compare, between pregnant individuals with and without bariatric surgery: (1) eating behaviors, (2) intuitive eating components and, (3) attitudes towards weight gain. This retrospective study included data collected in healthy pregnant individuals with and without previous bariatric surgery who were recruited at the Centre Hospitalier Universitaire (CHU) de Québec-Université Laval. Pregnant individuals who underwent bariatric surgery (biliopancreatic bypass with duodenal switch [n = 14] or sleeve gastrectomy [n = 5]) were individually matched, for age (±0.4 years) and body mass index (BMI) (±0.3 kg/m2), with pregnant individuals who have not received bariatric surgery. In the second trimester, participants completed the Three Factor Eating Questionnaire (TFEQ) and the Intuitive Eating Scale 2 (IES-2). In the third trimester, participants completed the French version of the Pregnancy Weight Gain Attitude Scale assessing attitudes towards weight gain. Pregnant individuals who have had bariatric surgery had a higher score for flexible restraint and a lower score for situational susceptibility to disinhibition compared to individuals who have not had undergone bariatric surgery (2.89 ± 1.15 vs. 1.95 ± 1.31; p = 0.04 and 1.11 ± 1.29 vs. 2.79 ± 1.44, respectively; p < 0.001). Regarding intuitive eating, pregnant individuals who experienced bariatric surgery had a higher score for reliance on internal hunger and satiety cues and a lower one for unconditional permission to eat compared with those who had not experienced bariatric surgery (3.99 ± 0.81 vs. 3.30 ± 1.03; p = 0.02 and 3.28 ± 0.54 vs. 3.61 ± 0.68, respectively; p = 0.03). No difference in attitudes towards weight gain was observed between groups. Overall, pregnant individuals who had undergone bariatric surgery had different eating behaviors and intuitive eating components compared to pregnant individuals without bariatric surgery. These results need to be confirmed in further studies with larger sample sizes.

Tackling the dual burden of malnutrition in pregnancy - pregnancy after weight loss surgery

The dual burden of malnutrition is characterised by the coexistence of undernutrition alongside overweight/obesity and diet-related noncommunicable diseases. It is a paradox which disproportionately affects women and is applicable to those who become pregnant after weight loss surgery. Obesity before and during pregnancy is associated with increased risk of adverse perinatal outcomes in both mother and child. Overall lifestyle interventions targeting weight loss in the preconception period have not proven effective, with people, and women in particular, increasingly seeking weight loss surgery. In women with severe obesity, surgery may normalise hormonal abnormalities and improve fertility. In those who become pregnant after surgery, evidence suggests a better overall obstetric outcome compared to those with severe obesity managed conservatively; however, there is heightened risk of maternal nutritional deficiencies and infants born small for gestational age. Specifically, pregnancy soon after surgery, in the catabolic phase when rapid weight loss is occurring, has the potential for poor outcomes. Lifelong micronutrient supplementation is required, and there is considerable risk of malnutrition if nutritional aftercare guidelines are not adhered to. It is therefore recommended that pregnancy is delayed until a stable weight is achieved and is supported by individualised advice from a multidisciplinary team. Further research is required to better understand how weight loss surgery affects the chances of having a healthy pregnancy and to ultimately improve nutritional management and patient care. In this review, we aim to summarise the evidence and guidance around nutrition during pregnancy after weight loss surgery.

Post metabolic bariatric surgery weight regain: the importance of GLP-1 levels

Weight regain and insufficient weight loss are essential problems after metabolic bariatric surgery (MBS) in people living with obesity. Changes in the level of glucagon-like peptide-1 (GLP-1) secreted from the gut after bariatric surgery are one of the underlying mechanisms for successful initial weight loss. Studies and meta-analyses have revealed that postprandial GLP-1 levels increase after the Roux-en-Y gastric bypass and sleeve gastrectomy, but fasting GLP-1 levels do not increase significantly. Some observational studies have shown the relationship between higher postprandial GLP-1 levels and successful weight loss after bariatric surgery. There is growing evidence that GLP-1-receptor agonist (GLP-1-RA) use in patients who regained weight after bariatric surgery has resulted in significant weight loss. In this review, we aimed to summarize the changes in endogenous GLP-1 levels and their association with weight loss after MBS, describe the effects of GLP-1-RA use on weight loss after MBS, and emphasize metabolic adaptations in light of the recent literature. We hypothesized that maintaining higher basal-bolus GLP-1-RA levels may be a promising treatment choice in people with obesity who failed to lose weight after bariatric surgery.

Obesity surgery and neural correlates of human eating behaviour: A systematic review of functional MRI studies

Changes in eating behaviour including reductions in appetite and food intake, and healthier food cue reactivity, reward, hedonics and potentially also preference, contribute to weight loss and its health benefits after obesity surgery. Functional magnetic resonance imaging (fMRI) has been increasingly used to interrogate the neural correlates of eating behaviour in obesity, including brain reward-cognitive systems, changes after obesity surgery, and links with alterations in the gut-hormone-brain axis. Neural responses to food cues can be measured by changes in blood oxygen level dependent (BOLD) signal in brain regions involved in reward processing, including caudate, putamen, nucleus accumbens, insula, amygdala, orbitofrontal cortex, and top-down inhibitory control, including dorsolateral prefrontal cortex (dlPFC). This systematic review aimed to examine: (i) results of human fMRI studies involving obesity surgery, (ii) important methodological differences in study design across studies, and (iii) correlations and associations of fMRI findings with clinical outcomes, other eating behaviour measures and mechanistic measures. Of 741 articles identified, 23 were eligible for inclusion: 16 (69.6%) longitudinal, two (8.7%) predictive, and five (21.7%) cross-sectional studies. Seventeen studies (77.3%) included patients having Roux-en-Y gastric bypass (RYGB) surgery, six (26.1%) vertical sleeve gastrectomy (VSG), and five (21.7%) laparoscopic adjustable gastric banding (LAGB). The majority of studies (86.0%) were identified as having a very low risk of bias, though only six (27.3%) were controlled interventional studies, with none including randomisation to surgical and control interventions. The remaining studies (14.0%) had a low risk of bias driven by their control groups not having an active treatment. After RYGB surgery, food cue reactivity often decreased or was unchanged in brain reward systems, and there were inconsistent findings as to whether reductions in food cue reactivity was greater for high-energy than low-energy foods. There was minimal evidence from studies of VSG and LAGB surgeries for changes in food cue reactivity in brain reward systems, though effects of VSG surgery on food cue reactivity in the dlPFC were more consistently found. There was consistent evidence for post-operative increases in satiety gut hormones glucagon-like-peptide 1 (GLP-1) and peptide YY (PYY) mediating reduced food cue reactivity after RYGB surgery, including two interventional studies. Methodological heterogeneity across studies, including nutritional state, nature of food cues, post-operative timing, lack of control groups for order effects and weight loss or dietary/psychological advice, and often small sample sizes, limited the conclusions that could be drawn, especially for correlational analyses with clinical outcomes, other eating behaviour measures and potential mediators. This systematic review provides a detailed data resource for those performing or analysing fMRI studies of obesity surgery and makes suggestions to help improve reporting and design of such studies, as well as future directions.

Injectable Weight Loss Medications in Plastic Surgery: What We Know, Perioperative Considerations, and Recommendations for the Future

Obesity is a major epidemic plaguing American society. Injectable subcutaneous medications initially designed for use in type 2 diabetes management, such as semaglutide and other glucagon-like peptide-1 receptor agonists, are rapidly gaining popularity for their effects on weight. These drugs (Ozempic, Wegovy, Saxenda, and Mounjaro) are ubiquitous on social media and are promoted by celebrities across all demographics. "Ozempic face" and "Ozempic butt" are now mainstream concepts highlighting the morphologic changes that occur with these medications. There is a paucity of literature available on the impact of these medications for plastic surgeons and their patients. As use becomes widespread, it is important for plastic surgeons to understand their indications, contraindications, appropriate perioperative management, and impact on plastic surgery procedures.

Prevalence and predictors of weight recurrence following bariatric surgery: A longitudinal prospective cohort study from Tehran Obesity Treatment Study (TOTS)

BACKGROUND

Considering the lack of a standardized definition for weight recurrence (WR), the prevalence and predictors of WR remain inconsistent.

METHODS

The prospective study was conducted on 1939 individuals who underwent bariatric surgery;66.8% underwent sleeve gastrectomy (SG), 33.2%, underwent gastric bypass (GB)[of them 87% one-anastomosis gastric bypass (OAGB), and 13% Rue and Y gastric bypass (RYGB)]. During a follow-up of 72 months, the prevalence of WR ranged from 13.5% to 35.5% according to five different definitions. The generalized estimated equation method was used to assess weight changes, excess weight loss (EWL%), and body composition (fat mass (FM), fat-free mass (FFM)and FFM loss/weight loss% (FFML/WL%)) by a bioelectrical impedance analyzer. Stepwise logistic regression models were applied to determine the independent predictors of WR.

RESULTS

Among 1939 participants followed up for 72 months, WR definitions were applied to 650 patients (75.4% females) with an average BMI of 44.3 ± 5.4 kg/m2,491 (75.5%) and 159 (24.5%) of whom underwent SG and GB, respectively. WR group had relatively higher weights and FM and lower EWL%. A WR turning point was observed at 24 months post-surgery (Ptime before & after 24 months<0.001). The most significant risk factors for WR included SG (in all WR definitions), a younger age (in four out of five definitions), and a higher baseline BMI (in three out of five definitions).

CONCLUSION

The prevalence and predictors of WR varied greatly depending on the definition applied. The prominent risk factors of WR included SG, younger age, and a higher baseline BMI.

Factors associated with grazing behavior in candidates for bariatric surgery at a hospital in the Amazon

Blackground

To assess grazing behavior and associated factors in candidates for bariatric surgery monitored at a public hospital that is a reference in the care of people with severe obesity.

Methods

Cross-sectional analytical study, with candidates for bariatric surgery of both genders, treated in a public hospital in the Amazon. To assess grazing behavior, the Repetitive Eating Questionnaire was used, and to investigate patterns of eating behavior, the Three Factor Eating Questionnaire was used, which assesses: Emotional Eating, Cognitive Restriction and Uncontrolled Eating. Sociodemographic information was obtained through self-report and the description of medication use through the medical record. Body mass index (BMI) was also calculated by measuring weight and height. The SPSS program, v. 21.0 was used. The study was approved by the Research Ethics Committee.

Results

A total of 205 participants were evaluated, with a mean age of 37.5 ± 8.6 years, the majority (93.7%) being women and the majority (59.5%) was not also using medication to lose weight. About 66.3% of the participants had compulsive grazing. The factor with the highest score was cognitive restriction (p < 0.001). Individuals who used weight loss drugs had higher scores in the cognitive restriction factor (p = 0.015) and lower scores for uncontrolled eating (p = 0.008), compulsive grazing (p = 0.021) and non-compulsive grazing (p = 0.034).

Conclusion

Linear regression showed that emotional eating and uncontrolled eating were predictors of both compulsive grazing and non-compulsive grazing behavior. It was observed that grazing behavior, cognitive restriction, emotional eating and uncontrolled eating are present and correlated in the studied patients. In addition, the use of weight loss drugs seems to help reduce dysfunctional eating behaviors in patients with severe obesity.

The Impact of Early-Stage Chronic Kidney Disease on Weight Loss Outcomes After Gastric Bypass

PURPOSE

Weight loss achieved through bariatric metabolic surgery was demonstrated to be effective at reversing chronic kidney dysfunction associated with obesity-related glomerulopathy. However, robust data on how pre-operative kidney status impacts on bariatric metabolic surgery weight loss outcomes is still lacking. The aim of this study was to evaluate the impact of kidney dysfunction on weight loss outcomes after bariatric metabolic surgery.

METHODS

Patients with obesity to be submitted to gastric bypass surgery underwent a pre-operative evaluation of creatinine clearance, estimated glomerular filtration rate (eGFR), proteinuria, and albuminuria in 24-hour urine. Body mass index (BMI), % total weight loss (%TWL), and % excess BMI loss (%EBMIL) were assessed at 6 and 12 months after surgery.

RESULTS

Before surgery, patients (N=127) had a mean BMI of 39.6 ± 3.0 kg/m2, and 56.7% (n=72) had a creatinine clearance > 130 mL/min, 23.6% (n= 30) presented proteinuria > 150 mg/24h, and 15.0% (n= 19) presented albuminuria > 30 mg/24h. After surgery, the mean BMI was 27.7 kg/m2 and 25.0 kg/m2 at 6 and 12 months, respectively (p<0.0001). The %TWL was lower in patients with pre-operative eGFR < percentile 25 (34.4 ± 5.8% vs 39.4 ± 4.9%, p=0.0007, at 12 months). There were no significant correlations between weight loss metrics and pre-operative creatinine clearance rate, proteinuria, or albuminuria.

CONCLUSION

Early-stage chronic kidney disease (G2) has a negative impact on short-term weight loss outcomes after bariatric metabolic surgery, albeit in a magnitude inferior to the clinically relevant threshold.

Mechanisms of Action of Bariatric Surgery on Body Weight Regulation

Bariatric surgery is an effective treatment modality for obesity and obesity-associated complications. Weight loss after bariatric surgery was initially attributed to anatomic restriction or reduced energy absorption, but now it is understood that surgery treats obesity by influencing the subcortical areas of the brain to lower adipose tissue mass. There are three major phases of this process: initially the weight loss phase, followed by a phase where weight loss is maintained, and in a subset of patients a phase where weight is regained. These phases are characterized by altered appetitive behavior together with changes in energy expenditure. The mechanisms associated with the rearrangement of the gastrointestinal tract include central appetite control, release of gut peptides, change in microbiota and bile acids. However, the exact combination and timing of signals remain largely unknown.

The Efficacy and Safety of Laparoscopic Single-Anastomosis Duodeno-ileostomy with Sleeve Gastrectomy (SADI-S) in Mid- and Long-Term Follow-Up: a Systematic Review

This systematic review of 10 studies aimed to investigate the mid- and long-term results of duodeno-ileostomy with sleeve gastrectomy (SADI-S) according to the PRISMA guideline. Related articles, which reported outcomes of laparoscopic SADI-S with follow-up ≥ 3 years, were selected and analyzed. The percentage of excess weight loss (EWL) was 70.9-88.7%, and 80.4% at 6, and 10 years, respectively. The more common late complications were malabsorption (6.3%) and gastroesophageal reflux disease (GERD) (3.6%). The remission rates of hypertension, diabetes, GERD, obstructive sleep apnea, and dyslipidemia were 62.9%, 81.3%, 53.2%, 60.9%, and 69.7%, respectively. In conclusion, SADI-S is a safe and effective surgical technique with durable weight loss and a high rate of comorbidity resolution in mid and long term.

Decision regret up to 6 years after sleeve gastrectomy

BACKGROUND

Sleeve gastrectomy (SG) is one of the most popular types of weight loss surgery today but is neither risk-free nor universally effective. We previously demonstrated that 5% of Roux-en-Y gastric bypass (RYGB) patients and up to 20% of gastric banding patients report overall regret 4 years after surgery. This study explores patients' attitudes toward their decision to have SG and decision regret rates up to 6 years postoperatively.

METHODS

We surveyed 185 patients who were at least 6 months post-SG (response rate 30%). We used a modified version of the Decision Regret Scale developed by Brehaut et al. We converted responses to a 0-100 scale so that higher scores (> 50) reflect greater regret. We characterized patients who expressed having overall decision regret (score > 50) vs. those who did not (≤ 50). Demographic and preoperative clinical information was extracted from the online medical records.

RESULTS

Of 185 SG patients, only 13 (7%) reported regret scores > 50 (i.e. high decision regret). Mean time from SG to survey completion was 41 months (range 6-76 months). Unadjusted comparisons between the two groups revealed that patients with high regret scores had lower mean weight loss (32.1% vs. 48.9% EBMIL), and reported less improvement in quality-of-life (QoL), such as physical health (46.2% vs. 93.5% "somewhat" or "significantly" improved). The two groups were similar in short-term complications, but those reporting overall regret were more likely to report GI complaints such as bloating (61.5% vs. 30.4%). Finally, patients with regret scores > 50 were more likely to be further out from SG (median time since surgery 61.8 vs. 41.1 months).

CONCLUSION

In our study, very few patients reported regret (7%) up to 6 years postoperatively, in line with prior reports after RYGB. Those with regret reported poorer QoL.

Assessing how bariatric surgery, emotional eating, and depression could affect each other: A cross-sectional study

Emotional eating (EE) has been found to be associated with depression, anxiety, excessive weight, obesity, and unhealthy eating habits. EE could also be associated with recurrent weight gain. To date, the factors predicting success following bariatric surgery remain uncertain. In addition, there is a paucity of data regarding the associations between EE, percent of total weight loss (TWL), and depression after bariatric surgery. The aims of this study were to evaluate the relationship between EE behavior, depression, and TWL, and to identify other factors, such as the type of bariatric surgery, that may have an impact on EE, depression and TWL after bariatric surgery. A self-report questionnaire was administered to 253 patients who underwent bariatric surgery between 2014 and 2021 at the Department of General Surgery, Faculty of Medicine, Gazi University. In total, 115 patients agreed to participate and completed the questionnaire. The administered scales consisted of the Sociodemographic Data Form, Emotional Eating Scale (EES), and Beck Depression Inventory (BDI). The participants were divided into the Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) groups. The RYGB and SG groups included 79 (68.8%) and 36 (31.3%) patients, respectively. A significant difference was found in terms of age (P = .002) and gender (P = .033). The BDI scores (P = .499) and TWL (P = .068) did not differ significantly. The EES score was higher in the SG group (P = .020). Between the groups with and without EE, age (P = .004) and BDI scores (P = .004) were significantly different. In correlation analyses, EES score was related to BDI score(ρ = 0.402, P < .001) and age(ρ = -0.348, P = .002) in the RYGB group. In regression analyses, TWL was associated with age (β = -0.366, P < .001) and surgery type (β = -6.740, P < .001), EES score was associated with BDI score (β = 0.149, P = .009) and age (β = -0.154, P = .006), and BDI score was associated with EES score (β = 0.419, P = .009) and age (β = -195, P = .041). In patients with moderate-to-severe depression, TWL was higher than in those without depression (P = .025). The effect of emotional eating and depression on TWL was not detected. Emotional eating and depression trigger each other in the individuals who underwent bariatric surgery. Young individuals who undergo bariatric surgery are more vulnerable to emotional eating and depression than older patients.

Lifestyle Patterns in the Late Postoperative Period of Bariatric Surgery: a Descriptive Analysis of the CINTO Study

BACKGROUND

The behavior of patients undergoing metabolic bariatric surgery (MBS) has been widely investigated to better understand their attitudes and to formulate effective advisory strategies. Although these elements have been studied separately, the magnitude of these behaviors still needs to be determined from a combined factors approach. This study aimed to identify the lifestyle patterns of patients who underwent MBS 5 or more years ago.

METHODS

In this observational study, 123 patients who underwent MBS at least 5 years ago were included. Anthropometric data, sociodemographic profile, dietary intake, physical activity level, sleeping, smoking, and alcohol consumption were collected for all participants. Lifestyle pattern was evaluated using principal component analysis (PCA) and the Kaiser-Meyer-Olkin (KMO) index was applied to evaluate data factorability.

RESULTS

PCA identified two patterns of behavior adopted by the participants in the late postoperative (PO) period (more than 5 years PO) of MBS. In the first pattern, a positive correlation was found between consumption of ultra-processed foods (r = 0.459), risky consumption of alcoholic beverages (r = 0.630), and tobacco use (r = 0.584). In the second, a positive correlation was observed between the consumption of unprocessed or minimally processed foods (r = 0.692) and more sleep time per day (r = 0.654).

CONCLUSION

After 5 years of PO, combined behavior analysis revealed healthy and unhealthy lifestyle patterns, which points to the relevance of permanent clinical follow-up of these patients to ensure the best health status.

Our biology working against us in obesity: A narrative review on implications for management of osteoarthritis

Obesity is the major modifiable risk factor for osteoarthritis (OA). A major focus of management in OA is weight loss. Although we live in an obesogenic environment, obesity has a predominantly genetic and epigenetic basis. This explains a person's weight set point which is defended by biological mechanisms making weight loss difficult to achieve and maintain long term, regardless of the methods used. Significant weight regain occurs after weight loss, with weight tending to return to pre-treatment levels after cessation of interventions including the glucagon-like peptide-1 (GLP-1) agonists. An area that has received little attention is the slow, insidious weight creep of 0.5-1 kg/year over adulthood that sees individuals relentlessly increase weight. There is evidence that low intensity, personalised lifestyle interventions can prevent this weight creep, providing patients with achievable goals. In this narrative review, we examine the evidence for weight loss in OA, the biological mechanisms that make weight loss difficult to achieve and maintain and the potential negative impacts on patients. We review the evidence for preventing weight gain, the improvement in patient outcomes and the potential for significant healthcare savings through reduced knee replacements. We propose a combined approach of weight loss when indicated, together with targeting weight creep across adult years and the potential role of metformin. Implementing these combined approaches is likely to be more effective in improving patient related outcomes, reducing joint damage and healthcare costs, than our current focus on achieving weight loss in OA.

Usability and Overall Perception of a Health Bot for Nutrition-Related Questions for Patients Receiving Bariatric Care: Mixed Methods Study

BACKGROUND

Currently, over 4000 bariatric procedures are performed annually in Switzerland. To improve outcomes, patients need to have good knowledge regarding postoperative nutrition. To potentially provide them with knowledge between dietetic consultations, a health bot (HB) was created. The HB can answer bariatric nutrition questions in writing based on artificial intelligence.

OBJECTIVE

This study aims to evaluate the usability and perception of the HB among patients receiving bariatric care.

METHODS

Patients before or after bariatric surgery tested the HB. A mixed methods approach was used, which consisted of a questionnaire and qualitative interviews before and after testing the HB. The dimensions usability of, usefulness of, satisfaction with, and ease of use of the HB, among others, were measured. Data were analyzed using R Studio (R Studio Inc) and Excel (Microsoft Corp). The interviews were transcribed and a summary inductive content analysis was performed.

RESULTS

A total of 12 patients (female: n=8, 67%; male: n=4, 33%) were included. The results showed excellent usability with a mean usability score of 87 (SD 12.5; range 57.5-100) out of 100. Other dimensions of acceptability included usefulness (mean 5.28, SD 2.02 out of 7), satisfaction (mean 5.75, SD 1.68 out of 7), and learnability (mean 6.26, SD 1.5 out of 7). The concept of the HB and availability of reliable nutrition information were perceived as desirable (mean 5.5, SD 1.64 out of 7). Weaknesses were identified in the response accuracy, limited knowledge, and design of the HB.

CONCLUSIONS

The HB's ease of use and usability were evaluated to be positive; response accuracy, topic selection, and design should be optimized in a next step. The perceptions of nutrition professionals and the impact on patient care and the nutrition knowledge of participants need to be examined in further studies.

Trends and safety of bariatric revisional surgery in Italy: multicenter, prospective, observational study

BACKGROUND

Revisional bariatric surgery (RBS) represents a further solution for patients who experience inadequate weight loss (IWL) following primary bariatric surgery (BS) or significant weight regain (WR) following initial satisfactory response. RBS guidelines are lacking; however, an increased trend in further BS offerings has been reported recently.

OBJECTIVE

Analyze trend, mortality, complication, readmission, and reoperation rates for any reason at 30 days after RBS in Italy.

SETTING

Ten Italian high-volume BS centers (university hospitals and private centers).

METHODS

Prospective, observational, multicenter study enrolling patients undergoing RBS between October 1, 2021, and March 31, 2022, registering reasons for RBS, technique, mortality, intraoperative and perioperative complications, readmissions, and reinterventions for any reason. Patients undergoing RBS during the same calendar interval in 2016-2020 were considered control patients.

RESULTS

A total of 220 patients were enrolled and compared with 560 control-group patients. Mortality was .45% versus .35% (n.s), with an overall mortality of .25%, while open surgery or conversion to open surgery was registered in 1%. No difference was found for mortality, morbidity, complications, readmission (1.3%), and reoperation rates (2.2%). IWL/WR was the most frequent cause, followed by gastroesophageal reflux disease; Roux-en-Y gastric bypass was the most used revisional procedure (56%). Sleeve gastrectomy was the most revised procedure in the study group, while gastric banding was the most revised in the control group. RBS represents up to 9% of the total BS in the Italian participating centers.

CONCLUSIONS

Laparoscopy represents the standard approach for RBS, which appears safe. Current Italian trends show a shift toward sleeve gastrectomy being the most revised procedure and Roux-en-Y gastric bypass being the most frequent revisional procedure.

UK cost-effectiveness analysis of endoscopic sleeve gastroplasty versus lifestyle modification alone for adults with class II obesity

BACKGROUND

Endoscopic sleeve gastroplasty (ESG) is a minimally invasive procedure that has been demonstrated in the MERIT randomised, controlled trial to result in substantial and durable additional weight loss in adults with obesity compared with lifestyle modification (LM) alone. We sought to conduct the first cost-effectiveness analysis of ESG versus LM alone in adults with class II obesity (BMI 35.0-39.9 kg/m2) from a national healthcare system perspective in England based on results from this study.

METHODS

A 6-state Markov model was developed comprising 5 BMI-based health states and an absorbing death state. Baseline characteristics, utilities, and transition probabilities were informed by patient-level data from the subset of patients with class II obesity in MERIT. Adverse events (AEs) were based on the MERIT safety population. Mortality was estimated by applying BMI-specific hazard ratios from the published literature to UK general population mortality rates. Utilities for the healthy weight and overweight health states were informed from the literature; disutility associated with increasing BMI in the class I-III obesity health states was estimated using MERIT utility data. Disutility due to AEs and the prevalence of obesity-related comorbidities were based on the literature. Costs included intervention costs, AE costs, and comorbidity costs.

RESULTS

ESG resulted in higher overall costs than LM alone but led to an increase in quality-adjusted life years (QALYs). The incremental cost-effectiveness ratio (ICER) for ESG vs LM alone was £2453/QALY gained. ESG was consistently cost effective across a wide range of sensitivity analyses, with no ICER estimate exceeding £10,000/QALY gained. In probabilistic sensitivity analysis, the mean ICER was £2502/QALY gained and ESG remained cost effective in 98.25% of iterations at a willingness-to-pay threshold of £20,000/QALY.

CONCLUSION

Our study indicates that ESG is highly cost effective versus LM alone for the treatment of adults with class II obesity in England.

Comparative analysis of lifestyle behaviors and dietary intake among obese and non-obese individuals following bariatric surgery: a secondary data analysis from 2020 to 2022

Objective

The aim of this research is to perform a comparative examination of lifestyle habits and dietary consumption between obese and non-obese subjects who have undergone bariatric surgery. This is done with the intent of investigating the disparities in obesity outcomes attributable to these elements.

Method

This study involves a secondary analysis of cross-sectional data obtained from the Sharik Diet and Health National Survey (SDHNS). To ensure a representative distribution of participants, the SDHNS employs a proportional quota sampling strategy, with stratification based on age, sex, and geographic location within Saudi Arabia's 13 administrative regions, utilizing the ZDataCloud® system for this purpose. The data, collected between 2020 and 2022 from over 15,000 participants, were screened to identify the eligible records of individuals who underwent bariatric surgery.

Results

Within the entire sample, a mere 5.0% (806 individuals) had undertook bariatric surgery, with females comprising 54% of this specific subgroup. The average age within this group was 38.85 years (SD 13.02) and range (18-87). Post-operative results showed that 33% of these individuals remained classified as obese. Utilizing the backward likelihood ratio regression model, it was determined that factors including age, decreased consumption of fresh juices and chicken, as well as current tobacco use, were significantly associated with persistent obesity.

Conclusion

The findings of this study suggest an association between the non-obese group and healthier lifestyle choices, including the consumption of high-protein diets and fresh juices, alongside a decreased prevalence of smoking. These observations underscore the significance of maintaining a healthy lifestyle for positive weight loss outcomes following bariatric surgery.

Racial Differences in Psychiatric Symptoms, Maladaptive Eating, and Lifestyle Behaviors After Bariatric Surgery

There are several psychological and behavioral factors associated with poorer outcomes following bariatric surgery, yet it is unknown whether and how these factors may differ by race. In this cross-sectional study, individuals who underwent bariatric surgery from 2018 to 2021 and up to 4 years post-surgery were invited to complete an online survey. Psychiatric symptoms, maladaptive eating patterns, self-monitoring behaviors, and exercise frequency were examined. Participants (N = 733) were 87% women, 63% White, with a mean age of 44 years. Analyses of covariance demonstrated that White individuals endorsed greater anxiety symptoms (p =.01) and emotional eating due to depression (p = .01), whereas Black individuals endorsed greater depression severity (p = .02). Logistic regression analyses demonstrated that White individuals were more likely to experience loss of control eating (OR= 1.7, p = .002), grazing (OR= 2.53, p <.001), and regular self-weighing (OR= 1.41, p <.001) than Black individuals, and were less likely to skip meals (OR= .61, p = .04), or partake in nighttime eating (OR= .40, p <.001). There were no racial differences in binge eating, emotional eating due to anxiety or frustration, use of a food diary, or exercise. Thus, depressive symptoms, skipping meals, and nighttime eating may be important, modifiable intervention targets to optimize the benefits of bariatric surgery and promote equitable outcomes.

A non-randomised feasibility study of a mHealth follow-up program in bariatric surgery

BACKGROUND

Behavioural support via mobile health (mHealth) is emerging. This study aimed to assess the feasibility, acceptability, cost, and potential effect on weight of a mHealth follow-up program in bariatric surgery.

METHODS

This was a non-randomised feasibility study describing intervention development and proof in the concept of a mHealth follow-up program in bariatric surgery. The study compares a prospective cohort with a historical control group and was conducted in a tertiary bariatric surgery service in Australia. The intervention group included individuals who had bariatric surgery (2019-2021) and owned a smart device, and the historical control group received usual postoperative care (2018). The intervention involved usual care plus codesigned biweekly text messages, monthly email newsletters, and online resources/videos over a 6-month period. The primary outcome measures included feasibility (via recruitment and retention rate), acceptability (via mixed methods), marginal costs, and weight 12 months postoperatively. Quantitative analysis was performed, including descriptive statistics and inferential and regression analysis. Multivariate linear regression and mixed-effects models were undertaken to test the potential intervention effect. Qualitative analysis was performed using inductive content analysis.

RESULTS

The study included 176 participants (n = 129 historical control, n = 47 intervention group; mean age 56 years). Of the 50 eligible patients, 48 consented to participate (96% recruitment rate). One participant opted out of the mHealth program entirely without disclosing their reason (98% retention rate). The survey response rate was low (n = 16/47, 34%). Participants agreed/strongly agreed that text messages supported new behaviours (n = 13/15, 87%); however, few agreed/strongly agreed that the messages motivated goal setting and self-monitoring (n = 8/15, 53%), dietary change (n = 6/15, 40%), or physical activity (n = 5/15, 33%). Interviews generated four main themes (n = 12): 'motivators and expectations', 'preferences and relevance', 'reinforced information", and 'wanting social support'. The intervention reinforced information, email newsletters were lengthy/challenging to read, and text messages were favoured, yet tailoring was recommended. The intervention cost AUD 11.04 per person. The mean 12-month weight was 86 ± 16 kg and 90 ± 16 kg (intervention and historical control) with no statistically significant difference. Intervention recipients enrolled at 3 months postoperatively demonstrated a statistically significant difference in 12-month weight (p = 0.014).

CONCLUSION

Although this study observed high rates of recruitment and retention, findings should be considered with caution as mHealth may have been embraced more by the intervention cohort as a result of the 2019 coronavirus pandemic. Of the various digital strategies developed and tested, the text message approach was the most acceptable; however, future intervention iterations could be strengthened through tailoring information when possible. The use of email newsletters and online resources/videos requires further testing of effectiveness to determine their value for continued use in bariatric surgery services.

Frailty indices in patients undergoing surgical resection of brain metastases: a systematic review

Brain metastases are a relatively common occurrence in patients with primary malignancies, with an incidence ranging from 9 to 17%. Their prevalence has increased due to treatment advancements that have led to improved survival in cancer patients. Frailty has demonstrated the ability to outperform greater patient age in surgical decision-making by predicting postoperative adverse events that include mortality, extended length of hospital stay, non-routine discharge disposition, and postoperative complications. Although predictive models based on frailty have been increasingly utilized in literature, their generalizability remains questionable due to inadequacies in model development and validation. Our systematic review describes development and validation cohorts of frailty indices used in patients undergoing surgical resection of brain metastases and serves as a guide to their incorporation in the outpatient clinical setting. A systematic review of literature was performed using PubMed and Google Scholar. Articles that reported outcomes using frailty indices in patients undergoing surgical resection of brain metastases were included. The Newcastle Ottawa Scale (NOS) was used to assess for risk of bias across individual studies. Studies with NOS > 5 were considered high quality. We identified 238 articles through our search strategy. After a title and abstract screen, followed by a full text review, 9 articles met criteria for inclusion. The 5- and 11-factor modified frailty indices were most frequently utilized (n = 4). Five studies utilized single-hospital databases, and four utilized nationwide databases. Six studies were considered high-quality based on the NOS. Although frailty indices have demonstrated the ability to predict outcomes in patients undergoing surgical resection of brain metastases, further validation of these indices is necessary prior to their incorporation in clinical practice.

Long-Term Outcome of Laparoscopic Sleeve Gastrectomy (LSG) on Weight Loss in Patients with Obesity: a 5-Year and 11-Year Follow-Up Study

BACKGROUND

Bariatric surgery is the most efficient treatment for patients with clinically severe obesity who have failed to obtain satisfactory weight loss through lifestyle modification and medical treatments. This study aimed to present our long-term laparoscopic sleeve gastrectomy (LSG) efficacy in terms of weight loss and obesity-related complications resolution.

PATIENTS AND METHODS

This is a retrospective study that was based on prospectively collected data from patients undergoing LSG by the same surgeon from July 2011 to the end of August 2022. The LSG-associated short-term (at 3 months, 6 months, and 1 year postoperatively) and long-term (at 5 years and 11 years postoperatively) weight loss, and the short-term (6 months postoperatively) and long-term (5 and 11 years postoperatively) rates of obesity-related complications were assessed.

RESULTS

This study included 892 patients who underwent LSG over 11 years. At the 1-year follow-up, data on 860 patients were available, while at the 5-year and 11-year follow-ups, data on 193 patients and 48 patients, respectively, were available. The mean EBWL% was 84.57 ± 18.41%, 64.22 ± 15.53%, and 66.01 ± 8.66% at the 1-year, 5-year, and 11-year follow-ups, respectively.

CONCLUSION

This study adds new evidence concerning the short-term efficacy of LSG. The long-term assessment showed relatively sustainable weight loss and obesity-related complications resolution, with a regression of the short-term gains that was still far from the baseline burden.