Is preoperative manometry in restrictive bariatric procedures necessary?

How preoperative upper gastrointestinal investigations affect the management of bariatric patients: results of a cohort study of 897 patients

INTRODUCTION

Preoperative diagnostic protocols vary worldwide, some prioritizing safety while others question routine procedures. Building on prior research, this study explores the impact of diverse preoperative findings on bariatric management and procedure selection.

METHODS

In a retrospective analysis of prospective data of over 1000 bariatric surgery patients from January 2017 to December 2022 undergoing primary laparoscopic Roux-en-Y gastric bypass (LRYGB) or sleeve gastrectomy (LSG) were analyzed. Preoperative assessment included upper endoscopy, upper GI series, and esophageal manometry. Sonography data were excluded. The primary endpoint examined the influence of preoperative exams on procedure selection, the secondary endpoint evaluated their therapeutic impact.

RESULTS

897 patients (741 RYGB, 156 SG) were included. All underwent upper endoscopy, revealing common findings such as type C gastritis and reflux esophagitis. Upper endoscopy prompted a therapeutic consequence in 216 patients (24.3%), resulting in a number needed to screen (NNS) of 4.1. Upper GI series and manometry were more frequently performed before LSG. Upper GI series detected hiatal hernias and motility disorders but did not result in any change of procedures. Esophageal manometry found pathologies in 37 (25.3%) patients rising to 41.5% if symptoms were present. Overall, 16 (1.8%) patients experienced a change in the planned procedure, with 14 changes prompted by preoperative findings and two by technical difficulties.

CONCLUSION

We advise routine upper endoscopies for all patients undergoing LRYGB or LSG, while reserving upper GI series only for selected cases. Manometry should be exclusively performed on symptomatic patients undergoing LSG, ensuring a balanced and individualized preoperative assessment.

Reflux Symptoms Increase Following Sleeve Gastrectomy Despite Triage of Symptomatic Patients to Roux-en-Y Gastric Bypass

BACKGROUND AND AIMS

Bariatric surgical options in obese patients include sleeve gastrectomy (SG) and roux-en-Y gastric bypass (RYGB), which may not be equivalent in risk of postoperative reflux symptoms. We evaluated risk and predictive factors for postbariatric surgery reflux symptoms.

METHODS

Patients with obesity evaluated for bariatric surgery over a 15-month period were prospectively followed with validated symptom questionnaires (GERDQ, dominant symptom index: product of symptom frequency and intensity from 5-point Likert scores) administered before and after SG and RYGB. Esophageal testing included high-resolution manometry in all patients, and ambulatory reflux monitoring off therapy in those with abnormal GERDQ or prior reflux history. Univariate comparisons and multivariable analysis were performed to determine if preoperative factors predicted postoperative reflux symptoms.

RESULTS

Sixty-four patients (median age 49.0 years, 84% female, median BMI 46.5 kg/m 2 ) fulfilled inclusion criteria and underwent follow-up assessment 4.4 years after bariatric surgery. Baseline GERDQ and dominant symptom index for heartburn were significantly higher in RYGB patients ( P ≤0.04). Despite this, median GERDQ increased by 2 (0.0 to 4.8) following SG and decreased by 0.5 (-1.0 to 5.0) following RYGB ( P =0.02). GERDQ became abnormal in 43.8% after SG and 18.8% after RYGB ( P =0.058); abnormal GERDQ improved in 12.5% and 37.5%, respectively ( P =0.041). In a model that included age, gender, BMI, acid exposure time, and type of surgery, multivariable analysis identified SG as an independent predictor of postoperative heartburn (odds ratio 16.61, P =0.024).

CONCLUSIONS

Despite preferential RYGB when preoperative GERD was identified, SG independently predicted worsening heartburn symptoms after bariatric surgery.

Revisional Bariatric Surgery due to Complications: Indications and Outcomes

BACKGROUND

The increasing prevalence of bariatric procedures has led to a surge in revisional surgeries. Failure of bariatric surgery can be attributed to inadequate weight loss or complications necessitating revisional surgery. In this study, we investigated the indications and outcomes of revisional surgery due to complications following primary bariatric surgery.

MATERIALS AND METHODS

A retrospective study was conducted using data from the Tehran Obesity Treatment Study, which included patients who underwent revisional bariatric surgery between March 2013 and September 2021 due to complications following primary bariatric surgery.

RESULTS

Of the 5382 patients who underwent primary bariatric surgery (sleeve gastrectomy, one-anastomosis gastric bypass, and Roux-en-Y gastric bypass), 203 (3.70%) required revisional surgery, with 37 cases performed due to surgical complications. The indications of revisional operations were gastroesophageal reflux disease (GERD) (n=17, 45.9%), protein-calorie malnutrition (PCM) (n=14, 37.8%), unexplained abdominal pain (n=5, 13.5%), and phytobezoar (n=1, 0.03%). In the postoperative follow-up, most patients exhibited improvement in signs and symptoms related to underlying causes. However, eight patients experienced early or late complications of grade III or higher according to the Clavien-Dindo classification, with one death resulting from liver failure.

CONCLUSION

Revisional bariatric surgery may effectively address complications from primary bariatric surgery, with the majority of patients experiencing improvements in symptoms. While the overall incidence of revisional surgery due to complications is relatively low, our findings suggest that GERD and PCM are the most common indications for revisional surgery.

Impact on sleeve gastrectomy in patients with esophageal motor disorder

BACKGROUND

Gastroesophageal reflux disease (GERD) and esophageal motor disorders (EMD) are frequent conditions among patients with obesity. The effects of sleeve gastrectomy (SG) on esophageal function can worsen GERD, but little is known about its effects on EMD and the consequences of preexisting EMD on GERD after SG.

OBJECTIVES

To study the postoperative outcomes of SG in a population of patients displaying preexisting EMD.

SETTING

University Hospital, France.

METHODS

Patients with EMD confirmed by high-resolution manometry who underwent a laparoscopic SG between 2010 and 2019 were retrospectively included in this monocenter study. GERD symptoms and high-resolution manometry results were recorded before surgery and during follow-up. Conversion to gastric bypass were also recorded.

RESULTS

Thirty-seven patients were included. Mean age was 52.6 ± 12.9 years. Most patients were female (70%). EMD were achalasia (19% of patients), hypercontractile (22%), hypocontractile (30%) and nutcracker esophagus (22%), and ineffective esophageal motility (8%). GERD symptoms were present in 10 patients (27%) preoperatively and 18 (49%) postoperatively. Achalasia was not resolved after SG and was constantly associated with disabling food blockage or GERD symptoms after surgery, and 3 of 4 patients with nutcracker esophagus had postoperative GERD symptoms and underwent gastric bypass.

CONCLUSIONS

This study is the largest to describe the course of GERD and EMD after SG in patients displaying preoperative EMD. Achalasia and nutcracker esophagus are associated with poorer postoperative outcomes, and another procedure such as a gastric bypass should be performed.

Impact of bariatric surgery on gastroesophageal reflux disease and esophageal motility

PURPOSE OF REVIEW

Obesity is rapidly increasing in prevalence, and bariatric surgery has become a popular treatment option that can improve all-cause mortality in obese individuals. Gastroesophageal reflux disease (GERD) and esophageal motility disorders are common in the obese population, and the effects of bariatric surgery on these conditions differ depending on the type of bariatric surgery performed.

RECENT FINDINGS

Laparoscopic adjustable gastric banding has declined in popularity due to its contributions to worsening GERD symptoms and the development of esophageal dysmotility. Although laparoscopic sleeve gastrectomy (LSG) is the most popular type of bariatric surgery, a comprehensive assessment for acid reflux should be performed as LSG has been linked with worsening GERD. Novel methods to address GERD due to LSG include magnetic sphincter augmentation and concomitant fundoplication. Due to the decreased incidence of postoperative GERD and dysmotility compared to other types of bariatric surgeries, Roux-en-Y gastric bypass should be considered for obese patients with GERD and esophageal dysmotility.

SUMMARY

Bariatric surgery can affect esophageal motility and contribute to worsening or development of GERD. A thorough workup of gastrointestinal symptoms before bariatric surgery should be performed with consideration for formal testing with high-resolution manometry and pH testing. Based on these results, the choice of bariatric surgery technique should be tailored accordingly to improve clinical outcomes.

6-Month Gastrointestinal Quality of Life (QoL) Results after Endoscopic Sleeve Gastroplasty and Laparoscopic Sleeve Gastrectomy: A Propensity Score Analysis

BACKGROUND

Laparoscopic sleeve gastrectomy (LSG) is currently the most commonly performed bariatric procedure. Endoscopic sleeve gastroplasty (ESG) is a promising new bariatric technique which is less invasive in its approach. To date no study has compared quality of life (QoL) outcomes between LSG and ESG. The aim of this study is to compare QoL after ESG and LSG using a propensity score analysis.

METHODS

QoL was evaluated by means of Gastrointestinal Quality of Life Index (GIQLI) questionnaire before and 6 months after the procedure. Patients were matched for age, sex, preoperative weight, and comorbidities.

RESULTS

Propensity score matching resulted in 23 pairs of patients homogeneous for age (p = 0.3), preoperative BMI (p = 0.3), sex (p = 0.74), and comorbidities (p = 0.9). Post-ESG patients, despite a less important %EWL (39.9 (17.5-58.9)vs 54.9 (46.2-65); p = 0.01) and %TWL (13.4 (7.8-20.9) vs 18.8 (17.6-21.8); p = 0.03), presented better QoL (14 [3-24] vs 13 (- 1-23) ΔGIQLI score; p = 0.79) with clear advantage for the gastrointestinal symptoms subdomain (66.5 (61-70.5) vs 59 (55-63); p = 0.001), while post-LSG patients presented a worsening of GERD symptoms (30.7% vs 0%) and an increased use of PPI therapy (p = 0.004). Resolution or improvement of comorbidities was similar (ESG 53% vs LSG 45.8%; p = 0.79) in both groups.

CONCLUSION

LSG may significantly affect QoL and results in worsening of gastrointestinal symptoms including GERD. ESG is a promising less invasive bariatric endoscopic procedure that demonstrated a positive impact on both QoL and comorbidities, which could lead to greater patient acceptance earlier in their disease or at a younger age.

The Causes of Gastroesophageal Reflux after Laparoscopic Sleeve Gastrectomy: Quantitative Assessment of the Structure and Function of the Esophagogastric Junction by Magnetic Resonance Imaging and High-Resolution Manometry

BACKGROUND

The incidence of de novo gastroesophageal reflux disease (GERD) after LSG is substantial. However, an objective correlation with the structural gastric and EGJ changes has not been demonstrated yet. We aimed to prospectively evaluate the effects of laparoscopic sleeve gastrectomy (LSG) on the structure and function of the esophagogastric junction (EGJ) and stomach.

METHODS

Investigations were performed before and after > 50% reduction in excess body weight (6-12 months after LSG). Subjects with GERD at baseline were excluded. Magnetic Resonance Imaging (MRI), high-resolution manometry (HRM), and ambulatory pH-impedance measurements were used to assess the structure and function of the EGJ and stomach before and after LSG.

RESULTS

From 35 patients screened, 23 (66%) completed the study (age 36 ± 10 years, BMI 42 ± 5 kg/m²). Mean excess weight loss was 59 ± 18% after 7.1 ± 1.7-month follow-up. Esophageal acid exposure (2.4 (1.5-3.2) to 5.1 (2.8-7.3); p = 0.040 (normal < 4.0%)) and reflux events increased after surgery (57 ± 24 to 84 ± 38; p = 0.006 (normal < 80/day)). Esophageal motility was not altered by surgery; however, intrabdominal EGJ length and pressure were reduced (both p < 0.001); whereas the esophagogastric insertion angle (35° ± 11° to 51° ± 16°; p = 0.0004 (normal < 60°)) and esophageal opening diameter (16.9 ± 2.8 mm to 18.0 ± 3.7 mm; p = 0.029) were increased. The increase in reflux events correlated with changes in EGJ insertion angle (p = 0.010). Patients with > 80% reduction in gastric capacity (TGV) had the highest prevalence of symptomatic GERD.

CONCLUSION

LSG has multiple effects on the EGJ and stomach that facilitate reflux. In particular, EGJ disruption as indicated by increased (more obtuse) esophagogastric insertion angle and small gastric capacity were associated with the risk of GERD after LSG. clinicaltrials.gov: NCT01980420.

Gastroesophageal Reflux After Sleeve Gastrectomy

Sleeve gastrectomy continues to be the most commonly performed bariatric operation worldwide. Development or worsening of pre-existing GERD has been recognized as a significant issue postoperatively. There is a paucity of information concerning the most appropriate preoperative workup and the technical and anatomical factors that may or may not contribute to the occurrence of reflux symptoms. Contemporary data quality is deficient given the predominantly retrospective nature, limited follow-up time, and heterogeneous outcome measures across studies. This has produced mixed results regarding the postoperative incidence and severity of GERD. Ultimately, better-constructed investigations are needed in order to offer evidence-based recommendations that may guide preoperative workup and improved patient selection criteria.

Magnetic Sphincter Augmentation Placement for Recalcitrant Gastroesophageal Reflux Disease Following Bariatric Procedures: A Systematic Review and Bayesian Meta-Analysis

Background: This study aims to consolidate all available articles on this topic and evaluate MSA effectiveness in the management of gastroesophageal reflux disease (GERD). Matherials and Methods: We conducted an electronic systematic search using MEDLINE databases (PubMed), EMBASE, and Web of Science. An electronic systematic search of articles comparing preoperative and postoperative health-related quality of life (GERD-HRQL) scores in patients who underwent MSA placement for management of GERD following bariatric surgery was performed. Three retrospective studies totaling 33 patients met the inclusion criteria and were included in this meta-analysis. Results: The pooled mean difference in change from preoperative GERD-HRQL score was 17.5 (95% CrI; -22.88 to -12.20) and it was statistically significant. The between-study variability is 3.621 (95% HPD; 1.39 4.99) with low heterogeneity (I² = 15%; 95% HPD; 2.1 26.2%). Conclusions: MSA for refractory GERD following bariatric surgery appears feasible. Prospective randomized controlled with standardized surgical technique and objective follow-up evaluation is needed to better assess short- and long-term efficacy.

Gastroesophageal Reflux After Sleeve Gastrectomy: New Onset and Effect on Symptoms on a Prospective Evaluation

BACKGROUND

Gastroesophageal reflux disease (GERD) is present in half of the obese candidates for bariatric surgery. Variability of symptoms and new onset of GERD are often debated. Prior studies have demonstrated that sleeve gastrectomy (SG) is associated with significant weight loss.

OBJECTIVES

We prospectively evaluated the effect of a standardized SG technique on GERD symptoms in 104 patients.

METHODS

All patients were surveyed on the presence of heartburn and/or regurgitation with a specific questionnaire (GERD-HRQL). Esophagogastroduodenoscopy (EGDS) was performed in the preoperative phase and after 12 months.

RESULTS

All patients completed a 12-month follow-up. In the preoperative phase, 27.9% presented GERD symptoms (29 cases), while endoscopic findings were observed in 19.2% (20 cases). Preoperative GERD was ameliorated/solved in 65.5% of cases. The mean value of the GERD-HRQL score was significantly lower in postoperative evaluation (33.8 vs 19.4; p < 0.05). At 12-month EGDS, esophagitis was present in 13.5%, and GERD-HRQL symptoms were recorded in 10.6%. Considering patients treated until December 2015 (group 1, 44 patients) and those treated after December 2015 (group 2, 60 patients), all new clinical and endoscopic GERD diagnoses were observed in group 1; the majority of unsolved GERD cases was present in Ggoup 1 (8 vs 2; p < 0.05).

CONCLUSION

Significant amelioration on preoperative GERD was confirmed after SG. New characteristics of reflux are emerging in SG patients, often asymptomatic. Standardization is necessary to define the real effect of SG on GERD.

Intrathoracic Sleeve Migrations After Sleeve Gastrectomy: A Compilation of Case Reports

Background: Laparoscopic sleeve gastrectomy (LSG) is the most commonly performed bariatric procedure in the United States. Postoperative migration of the stomach into the chest is a rare complication of this procedure. In this study, we present a compilation of acute and chronic intrathoracic sleeve migrations (ITSMs) after LSG and present possible underlying mechanisms of this complication, as described in the literature. Methods: We retrospectively reviewed the preoperative, intraoperative, and postoperative course of patients who had an ITSM after LSG between 2011 and 2019. Results: Two patients presented with this complication in the acute setting, whereas 3 patients developed ITSM as a chronic issue years after the primary procedure. All 5 were female patients, with a mean age and body mass index of 55.6 ± 9.5 (years) and 37.8 ± 2.9 kg/m², respectively. None of the cases had a hiatal hernia repair during the initial operation. All cases were completed laparoscopically with reduction of the migrated sleeve into the abdomen and primary hiatal hernia repair. One case required a return to the operating room for an acute reherniation. Conclusion: In this article, we report a compilation of cases of ITSMs after LSG with distinct clinical features that highlight the diversity of possible reasons and risk factors for its development.

Esophageal achalasia after Roux-en-Y gastric bypass for morbid obesity

The development of achalasia in patients with a prior Roux-en-Y gastric bypass (RYGB) is rare and it often remains unclear whether the esophageal motility disorder is a pre-existing condition in the obese patient or develops de novo after the procedure. The aim of this study was to review the available evidence regarding the management of patients with achalasia after a RYGB. Intra-sphincteric injection of botulinum toxin and pneumatic dilatation can be used to eliminate the functional obstruction at the level of the gastroesophageal junction. However, considering that achalasia patients after RYGB are often young and these treatment modalities have shown worse long-term outcomes, endoscopic or surgical myotomy is preferred. Per-oral endoscopic myotomy (POEM) is a very effective first line of treatment, and as RYGB is an excellent anti-reflux operation per se, post-POEM reflux may not be an issue in these patients. Laparoscopic Heller myotomy (LHM) is also an effective and safe therapy in achalasia patients with RYGB anatomy, and the gastric remnant can be safely used to perform a fundoplication to cover the myotomy. LHM and POEM are both acceptable primary treatment modalities in this setting. Further studies are needed to elucidate the pathophysiology and optimal management of patients with achalasia after RYGB.

Gastroesophageal reflux disease, obesity and laparoscopic sleeve gastrectomy: The burning questions

Obesity is a global health epidemic with considerable economic burden. Surgical solutions have become increasingly popular following technical advances leading to sustained efficacy and reduced risk. Sleeve gastrectomy accounts for almost half of all bariatric surgeries worldwide but concerns regarding its relationship with gastroesophageal reflux disease (GERD) has been a topic of debate. GERD, including erosive esophagitis, is highly prevalent in the obese population. The role of pre-operative endoscopy in bariatric surgery has been controversial. Two schools of thought exist on the matter, one that believes routine upper endoscopy before bariatric surgery is not warranted in the absence of symptoms and another that believes that symptoms are poor predictors of underlying esophageal pathology. This debate is particularly important considering the evidence for the association of laparoscopic sleeve gastrectomy (LSG) with de novo and/or worsening GERD compared to the less popular Roux-en-Y gastric bypass procedure. In this paper, we try to address 3 burning questions regarding the inter-relationship of obesity, GERD, and LSG: (1) What is the prevalence of GERD and erosive esophagitis in obese patients considered for bariatric surgery? (2) Is it necessary to perform an upper endoscopy in obese patients considered for bariatric surgery? And (3) What are the long-term effects of sleeve gastrectomy on GERD and should LSG be done in patients with pre-existing GERD?

Outcomes of routine upper gastrointestinal series screening and surveillance after laparoscopic adjustable gastric banding

BACKGROUND

Esophageal dilatation and dysmotility are known complications of the laparoscopic adjustable gastric band (LAGB), but their incidence varies widely in the literature. There are no formal recommendations guiding surveillance for these potentially underdiagnosed pathologies. This study demonstrates the utility and outcomes of a yearly upper gastrointestinal series screening protocol to detect and manage esophageal dysfunction after LAGB.

METHODS

We reviewed charts for all patients presenting for an outpatient surgical encounter related to LAGB between January 1, 2015 and December 31, 2017. Exclusion criteria included failure to undergo UGIS 6 months or more after band placement, or having undergone band placement in combination with another bariatric procedure. Descriptive statistics were used to characterize demographics, imaging findings and surgical outcomes. All imaging classifications were based on final radiologist report. Means were compared using a Student's t test.

RESULTS

A total of 322 records were reviewed with 39 patients excluded; 31 without UGIS and 8 with concomitant gastric bypass. 85% were female with an average age of 50 years. 66.8% identified as white or Caucasian with 24.7% black/African-American. Greater than 75% of the cohort had at least 5-year follow-up interval. UGIS was performed for symptoms in 66.1% and for routine screening in 33.9%. Of asymptomatic patients, 47.9% demonstrated esophageal dilatation or dysmotility on UGIS, similar to 51.3% of symptomatic patients. 96.8% of all patients went on to band removal. Sixty-four patients had repeat UGIS an average of 8 months following band removal, of which 40.6% were persistently abnormal.

CONCLUSIONS

The incidence of esophageal pathology was significantly higher than most reported series, as was the number of patients with persistently abnormal UGIS despite band removal. The data supports our policy of yearly UGIS for all post-LAGB patients, with strong recommendation for band removal if esophageal dilatation or dysmotility is found.

The impact of bariatric surgery on esophageal function

Obesity is a worldwide epidemic. There is increasing evidence that obesity is associated with benign gastroesophageal disease, including gastroesophageal reflux disease (GERD) and esophageal dysmotility. Bariatric surgery-including sleeve gastrectomy, gastric bypass, and adjustable gastric band placement-can effectively result in weight loss and control of obesity-related conditions, including GERD. However, there is increasing evidence that bariatric surgery itself can have a deleterious effect on esophageal function. In this review, we address the effect of obesity and bariatric surgery on esophageal dysfunction.

Place of upper endoscopy before and after bariatric surgery: A multicenter experience with 3219 patients

AIM: To study the preoperative and postoperative role of upper esophagogastroduodenoscopy (EGD) in morbidly obese patients.

METHODS: This is a multicenter retrospective study by reviewing the database of patients who underwent bariatric surgery (laparoscopic sleeve gastrectomy, laparoscopic Roux en Y gastric bypass, or laparoscopic minigastric bypass) in the period between 2001 June and 2015 August (Jahra Hospital-Kuwait, Hafr Elbatin Hospital and King Saud Medical City-KSA, and Mansoura University Hospital - Egypt). Patients with age 18-65 years, body mass index (BMI) > 40, or > 35 with comorbidities after failure of many dietetic regimen and acceptable levels of surgical risk were included in the study after having an informed signed consent. We retrospectively reviewed the medical charts of all morbidly obese patients. The patients’ preoperative data included clinical history including upper digestive symptoms and preoperative full workup including EGD. Only patients whose charts revealed weather they were symptomatic or not were studied. We categorized patients accordingly into two groups; with (group A) or without (group B) upper digestive symptoms. The endoscopic findings were categorized into 4 groups based on predetermined criteria. The medical record of patients who developed stricture, leak or bleeding after bariatric surgery was reviewed. Logestic regression analysis was used to identify preoperative predictors that might be associated with abnormal endoscopic findings.

RESULTS: Three thousand, two hundred and nineteen patients in the study period underwent bariatric surgery (75% LSG, 10% LRYDB, and 15% MGB). Mean BMI was 43 ± 13, mean age 37 ± 9 years, 79% were female. Twenty eight percent had presented with upper digestive symptoms (group A). EGD was considered normal in 2414 (75%) patients (9% group A vs 66% group B, P = 0.001). The abnormal endoscopic findings were found high in those patients with upper digestive symptoms. Abnormal findings (one or more) were found in 805 (25%) patients (19% group A vs 6% group B, P = 0.001). Seven patients had critical events during conscious sedation due to severe hypoxemia (< 60%). Rate of stricture in our study was 2.6%. Success rate of endoscopic dilation was 100%. One point nine percent patients with gastric leak were identified with 75% success rate of endoscopic therapy. Three point seven percent patients developed acute upper bleeding. Seventy-eight point two percent patients were treated by conservative therapy and EGD was performed in 21.8% with 100% success and 0% complications.

CONCLUSION: Our results support the performance of EGD only in patients with upper gastrointestinal symptoms. Endoscopy also offers safe effective tool for anastomotic complications after bariatric surgery.

Management of Gastric Obstruction Caused by Adjustable Gastric Band

BACKGROUND

Optimal adjustment of the filling volume of laparoscopic adjustable gastric banding is challenging and commonly performed empirically. Patients with band over-inflation and gastric obstruction arrive at the emergency department complaining of recurrent vomiting. In cases of gastric obstruction, intra-band pressure measurement may assist in determining the amount of fluid that should be removed from the band; however, our investigations have determined that intra-band pressure assessment need not play a role in the treatment of gastric band obstruction.

METHODS

In patients coming to the emergency department with gastric band obstruction, we measured intra-band pressure at arrival and following stepped removal of fluid, comparing the initial pressure with post-deflation pressure and measuring the volume of fluid removed.

RESULTS

Forty-eight patients participated in the study. Forty-five patients had a low-pressure/high-volume band. Their mean baseline pressure was 54.6 ± 22.3 mmHg. The mean volume of fluid removed from the band was 1.3 ± 0.8 ml. The mean post-deflation pressure was 22.5 ± 16.3 mmHg. Nearly 30 % of patients required as little as 0.5 ml of fluid removal, and 60 % of them were free of symptoms with removal of 1 ml.

CONCLUSIONS

Our results indicate that intra-band pressure measurement is of little value for determining the amount of fluid that should be removed for treatment of band obstruction. We suggest the removal of fluid in volumes of 0.5 ml until symptoms are relieved. Only in complicated cases, such as in patients having recurrent obstructions, should additional modalities be employed for further management guidance.

Consequences of bariatric surgery on oesophageal function in health and disease

Obesity is a continuing epidemic with substantial associated morbidity and mortality. Owing to the limitations of lifestyle modifications and pharmacological options, bariatric surgery has come to the forefront as an efficient method of achieving sustained weight loss and decreasing overall mortality in comparison with nonsurgical interventions. The most frequently performed bariatric operations are either purely restrictive, such as laparoscopic adjustable gastric band (LAGB) and laparoscopic sleeve gastrectomy (LSG), or restrictive-malabsorptive, such as the Roux-en-Y gastric bypass (RYGB). Each operation results in weight loss, but can also have unintended effects on the health of the oesophagus. Specifically, operations might lead to oesophageal dilation or the development of GERD. LAGB is the best-studied procedure with notable evidence for postoperative worsening of GERD and pseudo-achalasia, which increases lower oesophageal pressure and causes aperistalsis. In some studies, LSG initiates not only a worsening of GERD, but also the formation of de novo GERD in patients without preoperative GERD symptoms. RYGB demonstrates the most profound evidence for improvement of GERD symptoms and preservation of oesophageal motility. Future high-quality studies will be required to better understand the interaction between bariatric surgery and oesophageal disease.

Effect of sleeve gastrectomy on gastroesophageal reflux

Laparoscopic sleeve gastrectomy (LSG) is effective as a stand-alone bariatric procedure. Despite its positive effect with regard to weight loss and improvement of obesity-related co-morbidities, some patients develop gastroesophageal reflux symptoms postoperatively. The pathogenesis of these symptoms is not completely understood. Hence, this study aimed to assess the effect of sleeve gastrectomy on acid and non-acid gastroesophageal reflux, reflux symptoms and esophageal function. In a prospective study, patients underwent esophageal function tests (high-resolution manometry (HRM) and 24-h pH/impedance metry) before and 3 months after LSG. Preoperative and postoperative symptoms were assessed using the Reflux Disease Questionnaire (RDQ). In total, 20 patients (4 male/16 female, mean age 43 ± 12 years, mean weight 137.3 ± 25 kg, and mean BMI 47.6 ± 6.1 kg/m(2)) participated in this study. GERD symptoms did not significantly change after sleeve gastrectomy, but other upper gastrointestinal symptoms, particularly belching, epigastric pain and vomiting increased. Esophageal acid exposure significantly increased after sleeve gastrectomy: upright from 5.1 ± 4.4 to 12.6 ± 9.8% (p = 0.003), supine from 1.4 ± 2.4 to 11 ± 15% (p = 0.003) and total acid exposure from 4.1 ± 3.5 to 12 ± 10.4% (p = 0.004). The percentage of normal peristaltic contractions remained unchanged, but the distal contractile integral decreased after LSG from 2,006.0 ± 1,806.3 to 1,537.4 ± 1,671.8 mmHg · cm · s (p = 0.01). The lower esophageal sphincter (LES) pressure decreased from 18.3 ± 9.2 to 11.0 ± 7.0 mmHg (p = 0.02). After LSG, patients have significantly higher esophageal acid exposure, which may well be due to a decrease in LES resting pressure following the procedure.

Esophageal abnormalities in morbidly obese adult patients

BACKGROUND

An increase in body mass index has been found to be associated with an increase in the prevalence of gastroesophageal reflux disease (GERD) symptoms, esophageal mucosal injury, and GERD complications. Few systematic studies with objective tests have evaluated esophageal disorders in the morbidly obese population.

OBJECTIVES

To define more precisely in morbidly obese people the incidence of esophageal symptoms and characterize the esophageal disorders using objective data.

SETTING

University Hospital, Spain.

METHODS

Two hundred twenty-four presurgical morbidly obese patients were submitted to a protocol including a clinical history and objective tests (endoscopy, stationary esophageal manometry, 24-hour esophageal pH monitoring and isotopic emptying of the esophagus).

RESULTS

In a morbidly obese population, heartburn (50.9%) and regurgitation (28.6%) were the most prevalent symptoms of GERD. Endoscopy registered hiatus hernia (12.5%) and reflux esophagitis (17.3%). Manometry was often abnormal (33.4%), with a hypotensive lower esophageal sphincter as the most common finding. Esophageal pH-metry was abnormal in 54.2% of the cases. Finally, 9.1% of the patients presented with abnormal isotopic esophageal emptying. A correlation between the degree of obesity and the severity of symptoms/objective tests for esophageal abnormalities could not be found.

CONCLUSIONS

In morbidly obese patients, GERD is common, symptoms are unspecific, and there is a high prevalence of pH-metry and manometric abnormalities, unrelated to the degree of obesity.

Rare complication post sleeve gastrectomy: Acute irreducible paraesophageal hernia

•

Since early postoperative nausea and vomiting are fairly common, a high index of suspicion was essential for the diagnosis.

•

Taking into account the asymptomatic intrathoracic sleeve migration described in the literature, thoracic cuts of the CT Scan are essential in post sleeve evaluation.

•

Sleeve gastrectomy might disrupt the lower esophageal sphincter pressure and aggravate a pre-existing asymptomatic weak sphincter.

•

The only other 2 reported cases occurred in the setting of a hiatal hernia. In ours no hiatal defect was observed.

Introduction

Laparoscopic sleeve gastrectomy has been accepted as a standalone effective bariatric procedure. With the increase in the number of cases done worldwide, we are witnessing the emergence of new unexpected complications.

Presentation

A seemingly straight forward sleeve gastrectomy was complicated by acute post-operative vomiting which was diagnosed as an acute intra thoracic migration of part of the new sleeve. Surgical repair was done, with reduction and fixation of the stomach. Patient was subsequently relieved of his symptoms and discharged.

Discussion

This is a rare complication of a relatively well studied operation. Faced with severe post operative repeated vomiting, clinical suspicion and correct use of all para-clinical tools should help delineate the cause.

Conclusion

We report this case hoping to expand the existing literature on the topic and to highlight the potential role of gastrophrenic membrane dissection in the occurrence of such complication.

Recurrent aspiration pneumonia after laparoscopic adjustable gastric banding for obesity surgery

Laparoscopic adjustable gastric banding (LAGB) is an increasingly common therapeutic option in the management of obesity and certain obesity-related comorbid conditions. As it gains popularity for its advantages of being minimally invasive and reversible, clinicians should be aware of growing evidence of esophageal and pulmonary complications, which may be irreversible and associated with long-term morbidity. We report a case of esophageal and pulmonary complications in a patient with successful weight loss after lap-band surgery necessitating its removal.

Gastro-oesophageal reflux disease and obesity: pathogenesis and response to treatment

The link between obesity and GERD is clear on all measures of the disease: clinical symptoms, erosive oesophagitis, acid esophageal exposure, and complications. The pathogenesis of this link may be due to general factors such as visceral adiposity, oestrogen levels, or decrease of Helicobacter pylori infection with increased gastric acid secretion. Increased abdominal pressure leads to disruption of the esophago-gastric junction and hiatal hernia, and esophageal motility may be modified by obesity. Weight loss does improve GERD, but lifestyle modifications and diet are usually insufficient in the long-term for morbid obesity. GERD and hiatal hernia are key issues in bariatric surgery, and are widely discussed because of important implications. It is not currently certain which procedure should be favoured in case of GERD; yet gastric bypass offers the best guarantee of success. Hiatal hernia repair is also deemed necessary by some authors at the same time of the bariatric surgery. Minimally invasive techniques pose a new challenge to this issue, both technically and theoretically.

Sleeve gastrectomy and development of "de novo" gastroesophageal reflux

BACKGROUND

Sleeve gastrectomy (SG) is currently gaining popularity due to an excellent efficacy combined to minimal anatomic changes. However, some concerns have been raised on increased risk of postoperative gastroesophageal reflux disease (GERD) due to gastric fundus removal, section of the sling muscular fibers of gastroesophageal junction, reduced antral pump function, and gastric volume. We undertook the current study to evaluate by means of high-resolution impedance manometry (HRiM) and combined 24-h pH and multichannel intraluminal impedance (MII-pH) the impact of SG on esophageal physiology.

METHODS

In this study, 25 consecutive patients had HRiM and MII-pH before and after laparoscopic SG. The following parameters were calculated at HRiM: lower esophageal sphincter (LES) pressure and relaxation, peristalsis, number of complete esophageal bolus transit, and mean total bolus transit time. The acid and non-acid GER episodes were assessed by MII-pH with the patient in both upright and recumbent positions.

RESULTS

At a median follow-up of 13 months, HRiM showed an unchanged LES function, increased ineffective peristalsis, and incomplete bolus transit. MII-pH showed an increase of both acid exposure of the esophagus and number of non-acid reflux events in postprandial periods.

CONCLUSIONS

Laparoscopic SG is an effective restrictive procedure that creates delayed esophageal emptying without impairing LES function. A correctly fashioned sleeve does not induce de novo GERD. Retrograde movements and increased acid exposure are probably due to stasis and postprandial regurgitation.

A prospective randomized controlled trial assessing the efficacy of omentopexy during laparoscopic sleeve gastrectomy in reducing postoperative gastrointestinal symptoms

BACKGROUND

Patients undergoing sleeve gastrectomy experience a significant amount of postoperative gastrointestinal (GI) symptoms. The purpose of our study was to assess the efficacy of omentopexy during laparoscopic sleeve gastrectomy (LSG) in reducing postoperative food intolerance and GI symptoms.

METHODS

Morbidly obese patients undergoing LSG were randomly assigned to have LSG with or without omentopexy from May 2012 to June 2013. A total of 60 patients were recruited with 30 patients in each group. Patients and the symptom scorer were blinded as to the assigned surgery. All procedures were performed by one of two surgeons utilizing the same surgical technique. Patients were administered standardized surveys, including the Rhodes Index survey, gastroesophageal reflux disease (GERD) impact survey, and Eating Assessment Tool (EAT) survey at various time points postoperatively to assess nausea, vomiting, retching, frequency of GI symptoms, and level of distress.

RESULTS

There was no significant difference in patient age, percent decrease in BMI at any time point, or length of hospitalization between the two groups (P > 0.05). Furthermore, there was no significant difference in Rhodes Index scores, GERD impact scores, or EAT scores at any time point (P > 0.05). Patients in the LSG with omentopexy group required significantly more ondansetron perioperatively (16.1 ± 12.9 mg vs. 10.3 ± 10.2 mg, respectively; P = 0.04); however, there was no difference in metoclopramide requirement (P = 0.22). Surgical morbidity was not significantly different between the two groups (P > 0.05). Finally, there was no significant difference in number of postoperative clinic visits, office telephone encounters, total postoperative readmissions, or postoperative readmissions associated with GI symptoms (P > 0.05).

CONCLUSION

Omentopexy did not significantly decrease postoperative food intolerance or GI symptoms in morbidly obese patients undergoing LSG. Other methods of mitigating postoperative intolerance to oral intake and GI symptoms should be investigated.

High prevalence of esophageal dysmotility in asymptomatic obese patients

BACKGROUND

Obesity is an important health problem affecting >500 million people worldwide. Esophageal dysmotility is a gastrointestinal pathology associated with obesity; however, its prevalence and characteristics remain unclear. Esophageal dysmotilities have a high prevalence among obese patients regardless of gastrointestinal symptoms.

OBJECTIVE

To identify the prevalence of esophageal dysmotility among obese patients. The secondary goals were to characterize these pathologies in obese patients and identify risk factors.

METHOD

A prospective study from January 2009 to March 2010 at the University of Montreal Hospital Centre (Montreal, Quebec) was performed. Every patient scheduled for bariatric surgery underwent preoperatory esophageal manometry and was included in the study. Manometry was performed according to a standardized protocol with the following measures: superior esophageal sphincter - coordination and release during deglutition; esophageal body - presence, propagation, length, amplitude and type of esophageal waves of contraction; lower esophageal sphincter - localization, tone, release, intragastic pressure and intraesophageal pressure. All reference values were those used in the digestive motility laboratory. A gastrointestinal symptoms questionnaire was completed on the day manometry was performed. Chart reviews were performed to identify comorbidities and treatments that could influence the results.

RESULTS

A total of 53 patients were included (mean [± SD] age 43 ± 10 years; mean body mass index 46 ± 7 kg/m; 70% female). Esophageal manometry revealed dysmotility in 51% (n=27) of the patients. This dysmotility involved the esophageal body in 74% (n=20) of the patients and the inferior sphincter in 11% (n=3). Mixed dysmotility (body and inferior sphincter) was found in 15% (n=4) of cases. The esophageal body dysmotilities were hypomotility in 85% (n=23) of the patients, either from insignificant waves (74% [n=20]), nonpropagated waves (11% [n=3]) or low-amplitude waves (33% [n=9]). Gastroesophageal symptoms were found in 66% (n=35) of obese patients, including heartburn (66% [n=23]), regurgitation (26% [n=9]), dysphagia (43% [n=15]), chest pain (6% [n=2]) and dyspepsia (26% [n=9]). Among symptomatic patients, 51% (n=18) had normal manometry and 49% (n=17) had abnormal manometry (statistically nonsignificant). Among asymptomatic patients (n=18), 44% (n=8) had normal manometry and 56% (n=10) had abnormal manometry (statistically nonsignificant). Furthermore, no statistical differences were found between the normal manometry group and the abnormal manometry group with regard to medication intake or comorbidities.

CONCLUSION

Esophageal dysmotilities had a high prevalence in obese patients. Gastrointestinal symptoms cannot predict the presence of esophageal dysmotility. Hypomotility of the esophageal body is the most common dysmotility, especially from the absence of significant waves.

Scintigraphic methods to evaluate alterations of gastric and esophageal functions in female obesity

OBJECTIVE

Altered gastrointestinal function has frequently been observed in obese patients. The aim of this study was to investigate the frequency of gastro-esophageal reflux (GER) and to determine the alterations of gastric emptying and esophageal transit by scintigraphic methods in obese patients.

METHODS

Scintigraphic studies of 50 obese female non-diabetic patients who had not received any treatment for weight control were retrospectively reviewed. Mean Body Mass Index (BMI) was 34.96±3.04 kg/m(2) (range:32-39 kg/m(2)). All subjects were submitted to scintigraphic evaluation of esophageal transit, gastro-esophageal reflux, gastric emptying and presence of Helicobacter pylori infection. The data of obese patients were compared with those of sex-age matched 30 non-obese cases who were selected from our clinical archive.

RESULTS

In obese group, seventeen (34%) patients were found to be GER positive scintigraphically; mean gastric emptying time (t½) was 59.18±30.8 min and the mean esophageal transit time was 8.9±7.2 s. Frequency of positive GER scintigraphy and the mean value of esophageal transit time were significantly higher in obese patients than non-obese control subjects. Gastric emptying time and esophageal transit time values were significantly longer in GER positive obese patients than GER negative ones. There was no statistically significant difference in the frequency of positive C14 urea breath test between obese and non-obese subjects and there were also no statistically significant correlations between BMI, GER, esophageal transit time and gastric emptying time.

CONCLUSION

In our study, 42 of the 50 obese patients had esophago-gastric motility alterations. The significance of these alterations in obesity is not fully understood, but it is believed that these changes could be because of potential contributing factors in the development or maintenance of obesity or changes in eating habits.

CONFLICT OF INTEREST

None declared.

Sleeve gastrectomy and gastro-oesophageal reflux disease: a complex relationship

Sleeve gastrectomy is rapidly becoming popular as a standalone bariatric operation. At the same time, there are valid concerns regarding its long-term durability and postoperative gastro-oesophageal reflux disease. Though gastric bypass remains the gold standard bariatric operation, it is not suitable for all patients. Sleeve gastrectomy is sometimes the only viable option. Patients with inflammatory bowel disease, liver cirrhosis, significant intra-abdominal adhesions involving small bowel and those reluctant to undergo gastric bypass could fall in this category. It is widely recognised that some patients report worsening of their gastro-oesophageal reflux disease after sleeve gastrectomy. Still, others develop de novo reflux. This review examines if it is possible to identify these patients prior to surgery and thus prevent postoperative gastro-oesophageal reflux disease after sleeve gastrectomy.

[Esophageal motility, symptoms, food intake and weight loss after Roux-en-Y gastric bypass]

BACKGROUND

Abnormal manometry findings can be found in the obese population. It is controversial if the manometry should be used to choose the adequate operation or if the motility status could predict symptomatic outcomes.

AIM

To correlate the esophageal motility with postoperative symptoms, alimentary outcome and weight loss after Roux-en-Y gastric bypass.

METHODS

One hundred and fourteen patients were submitted to the operation and were prospectively studied. They had no GERD symptoms or diseases that might interfere with esophageal motor function. One year after surgery patients were interviewed regarding current symptoms and eating habits.

RESULTS

Excess weight loss was 66.2 %. Sixty (52.6%) patients had an abnormal manometry. Hypertensive lower esophageal sphincter was found in 18 (16%) patients and hypotonic sphincter in 31 (27%). Dumping syndrome was mentioned by 27 (23.6%) patients and 21 (18.4%) complained of regurgitation. Excellent, good, moderate and poor alimentary outcome was present in 32 (28%), 31 (27.2%), 39 (34.2%), 12 (11.6%) patients, respectively. Sphincter pressure and esophageal amplitude did not correlate with excess weight loss. Its average was significantly higher for patients with hypertensive esophageal amplitude. Regurgitation was more frequent in patients with a hypotensive sphincter. There is no correlation between dumping and sphincter pressure status; between dumping or regurgitation and esophageal amplitude; between alimentary outcomes and sphincter pressure status or esophageal amplitude.

CONCLUSION

Esophageal manometry before Roux-en-Y gastric bypass is of limited clinical significance.

Upper gastrointestinal symptoms in obese patients and their outcomes after bariatric surgery

Obesity is considered an important risk factor for the development of gastrointestinal (GI) disorders, likely through alterations of GI motility. Even though gastroesophageal reflux disease is the condition mainly studied at present, the prevalence of other upper GI symptoms is also augmented in obese patients. Owing to their chronic trend, these disorders have a bearing on public spending and their correct diagnosis would avoid unnecessary cost-consuming investigations. Furthermore, bariatric surgery dramatically changes GI anatomy and physiology, influencing GI symptom outcomes. The aim of this review is to categorize the available results in a pathophysiological framework in an attempt to set up the correct clinical GI management of obese patients before and after bariatric surgery. This would be helpful in tentatively reducing their considerable economic burden on public health services.

Reduction in obesity-related comorbidities: is gastric bypass better than sleeve gastrectomy?

BACKGROUND

Bariatric surgery is currently the most effective treatment for morbid obesity. It provides not only substantial weight loss, but also resolution of obesity-related comorbidities. Laparoscopic sleeve gastrectomy (LSG) has rapidly been gaining in popularity. However, there are limited data on the reduction of obesity-related comorbidities for LSG compared to laparoscopic Roux-en-Y gastric bypass (LRYGB). The aim of this study was to assess the effectiveness of laparoscopic LSG versus LRYGB for the treatment of obesity-related comorbidities.

METHODS

A total of 558 patients who underwent either LSG or LRYGB for morbid obesity at the Westchester Medical Center between April 2008 and September 2010 were included. Data were collected prospectively into a computerized database and reviewed for this study. Fisher's exact test analyses compared 30-day, 6-month, and 1-year outcomes of obesity-related comorbidities.

RESULTS

A total of 558 patients were included in the analysis of obesity-related comorbidity resolution; 200 underwent LSG and 358 underwent LRYGB. After 1 year, 86.2 % of the LSG patients had one or more comorbidities in remission compared to 83.1 % LRYGB patients (P = 0.688). With the exception of GERD (-0.09 vs. 50 %; P < 0.001), similar comorbidity remission rates were observed between LSG and LRYGB for sleep apnea (91.2 vs. 82.8 %; P = 0.338), hyperlipidemia (63 vs. 55.8 %; P = 0.633), hypertension (38.8 vs. 52.9 %; P = 0.062), diabetes (58.6 vs. 65.5 %; P = 0.638), and musculoskeletal disease (66.7 vs. 79.4 %; P = 0.472).

CONCLUSIONS

Laparoscopic sleeve gastrectomy markedly improves most obesity-related comorbidities. Compared to LRYGB, LSG may have equal in reducing sleep apnea, hyperlipidemia, hypertension, diabetes, and musculoskeletal disease. LRYGB appears to be more effective at GERD resolution than LSG.

Reduction in obesity-related comorbidities: is gastric bypass better than sleeve gastrectomy?

BACKGROUND

Bariatric surgery is currently the most effective treatment for morbid obesity. It provides not only substantial weight loss, but also resolution of obesity-related comorbidities. Laparoscopic sleeve gastrectomy (LSG) has rapidly been gaining in popularity. However, there are limited data on the reduction of obesity-related comorbidities for LSG compared to laparoscopic Roux-en-Y gastric bypass (LRYGB). The aim of this study was to assess the effectiveness of laparoscopic LSG versus LRYGB for the treatment of obesity-related comorbidities.

METHODS

A total of 558 patients who underwent either LSG or LRYGB for morbid obesity at the Westchester Medical Center between April 2008 and September 2010 were included. Data were collected prospectively into a computerized database and reviewed for this study. Fisher's exact test analyses compared 30-day, 6-month, and 1-year outcomes of obesity-related comorbidities.

RESULTS

A total of 558 patients were included in the analysis of obesity-related comorbidity resolution; 200 underwent LSG and 358 underwent LRYGB. After 1 year, 86.2 % of the LSG patients had one or more comorbidities in remission compared to 83.1 % LRYGB patients (P = 0.688). With the exception of GERD (-0.09 vs. 50 %; P < 0.001), similar comorbidity remission rates were observed between LSG and LRYGB for sleep apnea (91.2 vs. 82.8 %; P = 0.338), hyperlipidemia (63 vs. 55.8 %; P = 0.633), hypertension (38.8 vs. 52.9 %; P = 0.062), diabetes (58.6 vs. 65.5 %; P = 0.638), and musculoskeletal disease (66.7 vs. 79.4 %; P = 0.472).

CONCLUSIONS

Laparoscopic sleeve gastrectomy markedly improves most obesity-related comorbidities. Compared to LRYGB, LSG may have equal in reducing sleep apnea, hyperlipidemia, hypertension, diabetes, and musculoskeletal disease. LRYGB appears to be more effective at GERD resolution than LSG.

Effect of adjustable gastric banding on changes in gastroesophageal reflux disease (GERD) and quality of life

OBJECTIVE

Bariatric surgery is an effective treatment for the reduction of weight in obese patients (BMI ≥ 40 kg/m(2) or 30 kg/m(2) with ≥1 comorbidities), who are refractory to behavioral and medical therapies. This study examined the effect of the adjustable gastric band (AGB) system on changes in gastroesophageal reflux disease (GERD) and patient-reported outcomes, including measures of quality of life.

METHODS

Two-year interim analysis of patients (N = 171) in the 5 year, prospective APEX study who reported GERD prior to the AGB procedure. An unrecorded number of hiatal hernia repairs were conducted during the APEX study.

RESULTS

At baseline, 171 of 395 patients (43%) reported GERD requiring daily medical therapy. After 2 years, 122 patients had sufficient data to assess outcome (71%). Complete resolution of GERD was reported in 98 patients (80%), improvement in 13 (11%), no change in 9 (7%), and worsening in 2 (2%). Overall, 91% of GERD patients experienced resolution and/or improvement of GERD. Baseline BMI was not significantly different among the GERD response categories (resolved, improved, and stable/worse), p = 0.4581. Mean ΔBMI and percentage excess weight loss (%EWL) were: -8.8 kg/m(2)/-0.9%, -11.4 kg/m(2)/-53.9%, -6.4 kg/m(2)/-36.1%, and -7.1 kg/m(2)/-31.2%, respectively. There were no significant differences in reductions in BMI or %EWL between responder groups (resolved versus stable/worse ΔBMI p = 0.1031, %EWL p = 0.0667 OR resolved/improved versus stable/worse ΔBMI p = 0.0918, %EWL p = 0.0552). After 2 years, resolution or improvement occurred in pre-existing comorbidities: type 2 diabetes (96%), hypertension (91%), hyperlipidemia (77%), obstructive sleep apnea (86%), osteoarthritis (93%), and depression (75%). Patient satisfaction with AGB was assessed as: very satisfied/satisfied (87%), very satisfied (50%), dissatisfied (5.0%). Quality of life measured by the Obesity and Weight-Loss Quality of Life Instrument (GERD patients) significantly improved from baseline.

CONCLUSION

Obese patients with GERD had meaningful improvement in patient-reported outcomes with the AGB system. In addition, other obesity-related comorbidities and measures of quality of life improved.

[Recommendations for the peri-operative management of bariatric surgery patients: results of a national survey]

To standardise possible peri-operative bariatric surgery protocols, a survey was prepared to be filled in by members of the Spanish Society for Obesity (Sociedad Española de Cirugía de la Obesidad) (SECO), and to approve it at the XII National Congress. A total of 47 members of SECO from 14 autonomous communities responded, and it unanimously approved by the Congress. As highly recommended peri-operative procedures, were proposed: full laboratory analysis (98%) with an endocrine study (90%), ECG (96%), chest x-ray (98%), an oesophageal-gastric imaging test (endoscopy or gastro-duodenal transit study (98%), antibiotic prophylaxis (92%) and use of low molecular weight heparins pre-operatively (96%), and for 2 weeks (83%). Pre-surgical, abdominal ultrasound (86%), spirometry (80%), diet (88%) and psychological study (76%), and during surgery, use of elastic stockings (76%), leak tests (92%) and drainages (90%), were established as advisable procedures.

Symptoms of gastroesophageal reflux following laparoscopic sleeve gastrectomy are related to the final shape of the sleeve as depicted by radiology

BACKGROUND

Laparoscopic sleeve gastrectomy (LSG) is gaining popularity as a primary procedure in selected morbidly obese patients. Like most other bariatric procedures LSG results in alterations of the upper GI anatomy that might affect gastroesophageal reflux postoperatively. The study was conducted to assess the presence of reflux symptoms in patients before and after laparoscopic sleeve gastrectomy and any possible relation of these symptoms to the postoperative gastric anatomy as depicted by gastrografin swallow studies.

METHODS

The study included 85 consecutive morbidly obese patients who underwent LSG as a primary bariatric procedure. Patients were evaluated for symptoms of gastroesophageal reflux (heartburn, regurgitation, and vomiting) preoperatively and at 1 and 6 months and 1 year postoperatively. To assess the postoperative gastric anatomy, the gastrografin studies that were routinely performed in all patients on the third postoperative day were retrospectively evaluated. Changes of each one of the reflux symptoms were assessed in relation to the radiological pattern of the gastric sleeve.

RESULTS

Three radiological patterns of the gastric sleeve were identified: (a) the tubular (65.9%), (b) the superior pouch (25.9%), and (c) the inferior pouch pattern (8.2%). Patients showed an overall tendency towards relief of heartburn and increase of regurgitation and vomiting postoperatively. However, only changes in regurgitation and vomiting were found to be statistically significant (p < 0.01); interestingly, those were observed in patients with the tubular gastric pattern.

CONCLUSIONS

The final shape of the gastric sleeve as depicted by radiological studies seems to have an impact on reflux symptoms after laparoscopic sleeve gastrectomy.

A focus on surgical preoperative evaluation of the bariatric patient--the Cleveland Clinic protocol and review of the literature

Bariatric surgery is well established as a safe and effective treatment for morbid obesity and related metabolic diseases. As an elective procedure, it is critical that individuals considering bariatric surgery should be carefully selected, extensively evaluated, and optimized in order to achieve optimal outcomes. This patient population has unique and challenging issues, including an extensive range of potential medical, psychiatric, and psychological comorbidities, and often patients have unrealistic expectations of the surgery. Therefore, a multidisciplinary, comprehensive and timely assessment preoperatively is of great importance. Individual bariatric units utilise different preoperative patient evaluation protocols. There is at present no uniformly accepted or recommended practice. In this article we describe what we believe are the essential components of a preoperative bariatric surgery evaluation, with supporting evidence for each recommendation. We also present a protocol currently in practice at a high volume bariatric center of excellence; the Bariatric and Metabolic Institute in the Cleveland Clinic, Ohio.

Association between gastroesophageal reflux disease and laparoscopic sleeve gastrectomy

BACKGROUND

Gastroesophageal reflux disease (GERD) is a common co-morbidity identified in obese patients. It is well established that patients with GERD and morbid obesity experience a marked improvement in their GERD symptoms after Roux-en-Y gastric bypass. Conflicting data exist for adjustable laparoscopic gastric banding and GERD. Laparoscopic sleeve gastrectomy (LSG) has become a popular adjunct to bariatric surgery in recent years. However, very little data exist concerning LSG and its effect on GERD.

METHODS

A retrospective chart review was performed of 176 LSG patients from January 2006 to August of 2009. The preoperative and postoperative GERD symptoms were evaluated using follow-up surveys and chart review.

RESULTS

Of the 176 patients, 85.7% of patients were women, with an average age of 45 years (range 22-65). The average preoperative body mass index was 46.6 kg/m(2) (range 33.2-79.6). The average excess body weight lost at approximately 6, 12, 24 months was calculated as 54.2%, 60.7%, and 60.3%, respectively. Of the LSG patients, 34.6% had preoperative GERD complaints. Postoperatively, 49% complained of immediate (within 30 d) GERD symptoms, 47.2% had persistent GERD symptoms that lasted >1 month after LSG, and 33.8% of patients were taking medication specifically for GERD after LSG. The most common symptoms were heartburn (46%), followed by heartburn associated with regurgitation (29.2%).

CONCLUSION

In the present study, LSG correlated with the persistence of GERD symptoms in patients with GERD preoperatively. Also, patients who did not have GERD preoperatively had an increased risk of postoperative GERD symptoms.