Outcomes of endoscopic treatment of leaks and fistulae after sleeve gastrectomy: results from a large multicenter U.S. cohort

Esophageal Self-Expandable Metal Stents Can Fracture in the Distal Third When Used for Post-Bariatric Surgery Complications: A Single Center Experience and Review of the Literature with Video

Background: Esophageal self-expandable metal stents (SEMS) are an important endoscopic tool. These stents have now been adapted successfully to manage post-bariatric surgery complications such as anastomotic leaks and strictures. In centers of expertise, this has become the primary standard-of-care treatment given its minimally invasive nature, and that it results in early oral feeding, decreased hospitalization, and overall favorable outcomes. Self-expandable metal stents (SEMS) fractures are a rare complication of unknown etiology. We aimed to investigate possible causes of SEMS fractures and highlight a unique endoscopic approach utilized to manage a fractured and impaled SEMS. Methods: This is a retrospective study of consecutive patients who underwent esophageal SEMS placement between 2015-2021 at a tertiary referral center to identify fractured SEMS. Patient demographics, stent characteristics, and possible etiologies of fractured SEMS were identified. A comprehensive literature review was also conducted to evaluate all prior cases of fractured SEMS and to hypothesize fracture theories. Results: There were seven fractured esophageal SEMS, of which six were used to manage post-bariatric surgery complications. Five SEMS were deployed with their distal ends in the gastric antrum and proximal ends in the distal esophagus. All stents fractured within 9 weeks of deployment. Most stents (5/7) were at least 10 cm in length with fractures commonly occurring in the distal third of the stents (6/7). The wires of a fractured SEMS were embedded within the esophagogastric junction in one case, prompting the use of an overtube that was synchronously advanced while steadily extracting the stent. Discussion: We suggest the following four etiologies of SEMS fractures: anatomical, physiological, mechanical, and chemical. Stent curvature at the stomach incisura can lead to strain- and stress-related fatigue due to mechanical bending with exacerbation from respiratory movements. Physiologic factors (gastric body contractions) can result in repetitive squeezing of the stent, adding to metal fatigue. Intrinsic properties (long length and low axial force) may be contributing factors. Lastly, the stomach acidic environment may cause nitinol-induced chemical weakness. Despite the aforementioned theories, SEMS fracture etiology remains unclear. Until more data become available, it may be advisable to remove these stents within 6 weeks.

Comparison of long-term quality of life outcomes between endoscopic vacuum therapy and other treatments for upper gastrointestinal leaks

BACKGROUND

While endoscopic vacuum assisted closure (EVAC) therapy is a validated treatment for gastrointestinal leaks, its impact on long-term quality of life (QoL) is uncertain. The purpose of this study was to evaluate the impact of successful EVAC management on long-term QoL outcomes.

METHODS

An institutional review board approved prospectively maintained database was retrospectively reviewed to identify patients undergoing treatment for gastrointestinal leaks between June 2012 and July 2022. The Short-Form 36 (SF-36) survey was used to assess QoL. Patients were contacted by telephone and sent the survey electronically. QoL outcomes between patients who underwent successful EVAC therapy and those who required conventional treatment (CT) were analyzed and compared.

RESULTS

A total of 44 patients (17 EVAC; 27 CT) completed the survey and were included in our analysis. All included patients had foregut leaks with sleeve gastrectomy being the most common sentinel operation (n = 20). The mean time from the sentinel operation was 3.8 years and 4.8 years for the EVAC and CT groups, respectively. When evaluating long-term QoL, the EVAC group scored higher in all QoL domains when compared to the CT group with physical functioning (87.3 vs 69.3, p = 0.04), role limitations due to physical health (84.1 vs 45.7, p = 0.02), energy/fatigue (60.0 vs 40.9, p = 0.04), and social functioning (86.2 vs 64.1, p = 0.04) reaching statistical significance. Overall, patients who achieved organ preservation via successful EVAC therapy scored higher in all domains with role limitations due to physical health (p = 0.04) being statistically significant. In a multivariable regression analysis, increased age and a history of prior abdominal surgery at the time of the sentinel operation were patient characteristics that negatively impacted QoL outcomes.

CONCLUSION

Patients with gastrointestinal leaks successfully managed by EVAC therapy have better long-term QoL outcomes when compared to patients undergoing other treatments.

Is the Surgical Drainage Mandatory for Leak after Sleeve Gastrectomy?

INTRODUCTION

Despite the unanimous acknowledgement of the laparoscopic sleeve gastrectomy (LSG) worldwide, the leak remains its deficiency. For the last decade, the surgical treatment was practically considered mandatory for almost any collection following LSG. The aim of this study is to evaluate the need for surgical drainage for leak following LSG.

METHODS

All consecutive patients having gone through LSG from January 2017 to December 2020 were enrolled in our study. Once the demographic data and the leak history were registered, we analyzed the outcome of the surgical or endoscopic drainage, the characteristics of the endoscopic treatment, and the evolution to complete healing.

RESULTS

A total of 1249 patients underwent LSG and the leak occurred in 11 cases (0.9%). There were 10 women with a mean age of 47.8 years (27-63). The surgical drainage was performed for three patients and the rest of the eight patients underwent primary endoscopic treatment. The endoscopic treatment was represented with pigtails for seven cases and septotomy with balloon dilation for four cases. In two out of these four cases, the septotomy was anticipated by the use of a nasocavitary drain for 2 weeks. The average number of endoscopic procedures was 3.2 (range 2-6). The leaks achieved complete healing after an average duration of 4.8 months (range 1-9 months). No mortality was recorded for a leak.

CONCLUSIONS

The treatment of the gastric leak must be tailored to each patient. Although there is still no consensus for the endoscopic drainage of leaks after LSG, the surgical approach can be avoided in up to 72%. The benefits of pigtails and nasocavitary drains followed by endoscopic septotomy are undeniable, and they should be included in the armamentarium of any bariatric center.

Endoscopic Stent Placement Can Successfully Treat Gastric Leak Following Laparoscopic Sleeve Gastrectomy If and Only If an Esophagoduodenal Megastent Is Used

PURPOSE

Gastric staple line leakage (GL) is a serious complication of laparoscopic sleeve gastrectomy (LSG), with a specific mortality ranging from 0.2 to 3.7%. The current treatment of choice is stent insertion. However, it is unclear whether the type of stent which is inserted affects treatment outcome. Therefore, we aimed not only to determine the effectiveness of stent treatment for GL but also to specifically clarify whether treatment outcome was dependent on the type of stent (small- (SS) or megastent (MS)) which was used.

PATIENTS AND METHODS

A single-centre retrospective study of 23 consecutive patients was conducted to compare the outcomes of SS (n = 12) and MS (n = 11) for the treatment of GL following LSG. The primary outcome measure was the success rate of stenting, defined as complete healing of the GL without changing the treatment strategy. Treatment change or death were both coded as failure.

RESULTS

The success rate of MS was 91% (10/11) compared to only 50% (6/12) for SS (p = 0.006). An average of 2.3 ± 0.5 and 6.8 ± 3.7 endoscopies were required to achieve healing in the MS and SS groups respectively (p < 0.001). The average time to resumption of oral nutrition was shorter in the MS group (1.4 ± 1.1 days vs. 23.1 ± 33.1 days, p = 0.003).

CONCLUSIONS

Stent therapy is only effective and safe for the treatment of GL after LSG if a MS is used. Treatment with a MS may not only increase treatment success rates but may also facilitate earlier resumption of oral nutrition and shorten the duration of hospitalization.

A Comprehensive Review of Endoscopic Management of Sleeve Gastrectomy Leaks

BACKGROUND

Bariatric surgery leaks result in significant morbidity and mortality. Experts report variable therapeutic approaches, without uniform guidelines or consensus.

OBJECTIVE

To review the pathogenesis, risk factors, prevention, and treatment of gastric sleeve leaks, with a focus on endoscopic approaches. In addition, the efficacy and success rates of different treatment modalities are assessed.

DESIGN

A comprehensive review was conducted using a thorough literature search of 5 online electronic databases (PubMed, PubMed Central, Cochrane, EMBASE, and Web of Science) from the time of their inception through March 2020. Studies evaluating gastric sleeve leaks were included. MeSH terms related to "endoscopic," "leak," "sleeve," "gastrectomy," "anastomotic," and "bariatric" were applied to a highly sensitive search strategy. The main outcomes were epidemiology, pathophysiology, diagnosis, treatment, and outcomes.

RESULTS

Literature search yielded 2418 studies of which 438 were incorporated into the review. Shock and peritonitis necessitate early surgical intervention for leaks. Endoscopic therapies in acute and early leaks involve modalities with a focus on one of: (i) defect closure, (ii) wall diversion, or (iii) wall exclusion. Surgical revision is required if endoscopic therapies fail to control leaks after 6 months. Chronic leaks require one or more endoscopic, radiologic, or surgical approaches for fluid collection drainage to facilitate adequate healing. Success rates depend on provider and center expertise.

CONCLUSION

Endoscopic management of leaks post sleeve gastrectomy is a minimally invasive and effective alternative to surgery. Their effect may vary based on clinical presentation, timing or leak morphology, and should be tailored to the appropriate endoscopic modality of treatment.

Endoscopic Management of Bariatric Surgery Complications According to a Standardized Algorithm

BACKGROUND AND AIMS

Endoscopy is effective in management of bariatric surgery (BS) adverse events (AEs) but a comprehensive evaluation of long-term results is lacking. Our aim is to assess the effectiveness of a standardized algorithm for the treatment of BS-AE.

PATIENTS AND METHODS

We retrospectively analyzed 1020 consecutive patients treated in our center from 2012 to 2020, collecting data on demographics, type of BS, complications, and endoscopic treatment. Clinical success (CS) was evaluated considering referral delay, healing time, surgery, and complications type. Logistic regression was performed to identify variables of CS.

RESULTS

In the study period, we treated 339 fistulae (33.2%), 324 leaks (31.8%), 198 post-sleeve gastrectomy twist/stenosis (19.4%), 95 post-RYGB stenosis (9.3 %), 37 collections (3.6%), 15 LAGB migrations (1.5%), 7 weight regains (0.7%), and 2 hemorrhages (0.2%). Main endoscopic treatments were as follows: pigtail-stent positioning under endoscopic view for both leaks (CS 86.1%) and fistulas (CS 77.2%), or under EUS-guidance for collections (CS 88.2%); dilations and/or stent positioning for sleeve twist/stenosis (CS 80.6%) and bypass stenosis (CS 81.5%). After a median (IQR) follow-up of 18.5 months (4.29-38.68), complications rate was 1.9%. We found a 1% increased risk of redo-surgery every 10 days of delay to the first endoscopic treatment. Endoscopically treated patients had a more frequent regular diet compared to re-operated patients.

CONCLUSIONS

Endoscopic treatment of BS-AEs following a standardized algorithm is safe and effective. Early endoscopic treatment is associated with an increased CS rate.

Retrospective multicenter study on endoscopic treatment of upper GI postsurgical leaks

BACKGROUND AND AIMS

Therapeutic endoscopy plays a critical role in the management of upper GI (UGI) postsurgical leaks. Data are scarce regarding clinical success and safety. Our aim was to evaluate the effectiveness of endoscopic therapy for UGI postsurgical leaks and associated adverse events (AEs) and to identify factors associated with successful endoscopic therapy and AE occurrence.

METHODS

This was a retrospective, multicenter, international study of all patients who underwent endoscopic therapy for UGI postsurgical leaks between 2014 and 2019.

RESULTS

Two hundred six patients were included. Index surgery most often performed was sleeve gastrectomy (39.3%), followed by gastrectomy (23.8%) and esophagectomy (22.8%). The median time between index surgery and commencement of endoscopic therapy was 16 days. Endoscopic closure was achieved in 80.1% of patients after a median follow-up of 52 days (interquartile range, 33-81.3). Seven hundred seventy-five therapeutic endoscopies were performed. Multimodal therapy was needed in 40.8% of patients. The cumulative success of leak resolution reached a plateau between the third and fourth techniques (approximately 70%-80%); this was achieved after 125 days of endoscopic therapy. Smaller leak initial diameters, hospitalization in a general ward, hemodynamic stability, absence of respiratory failure, previous gastrectomy, fewer numbers of therapeutic endoscopies performed, shorter length of stay, and shorter times to leak closure were associated with better outcomes. Overall, 102 endoscopic therapy-related AEs occurred in 81 patients (39.3%), with most managed conservatively or endoscopically. Leak-related mortality rate was 12.4%.

CONCLUSIONS

Multimodal therapeutic endoscopy, despite being time-consuming and requiring multiple procedures, allows leak closure in a significant proportion of patients with a low rate of severe AEs.

Roux-en-Y Gastric Bypass for the Treatment of Leak Following Sleeve Gastrectomy

PURPOSE

Laparoscopic sleeve gastrectomy (LSG) is estimated to be its most severe complication. An aggressive management with surgical reconstructive procedures can be proposed in patients in whom all the conservative endoscopic techniques fail. The purpose of the present study was to report our experience with Roux-en-Y gastric bypass (RYGBP) as treatment for the chronic leak after LSG.

METHODS

Between January 2013 and July 2019, 17 consecutive patients underwent RYGBP for the treatment of chronic leak after LSG. The initial intervention, the endoscopic approach and the definitive surgical repair were carefully reviewed.

RESULTS

Seventeen patients (13 women) with a median age of 39 years (24-67) with a median body mass index (BMI) of 40 kg/m² (30-52) underwent RYGBP for persistent fistula. Sixteen patients had their early LSG performed in another hospital. Eleven patients had an initial endoscopic treatment by pigtail drains following laparoscopic drainage and 6 other patients had the endoscopic stent as the first-choice line treatment. The overall average fistula diagnosis was done at 7.7 months (2-49 months) for 12 patients. For the rest of five patients, the procedure was performed almost in the acute setting (< 30 days). All procedures were performed by laparotomy but one. Five patients had a gastrojejunal anastomosis leak diagnosed by salivary flow in the drainage, but all patients were treated conservatively. No post-operative mortality was recorded.

CONCLUSIONS

Surgery should be considered in case of failure of the endoscopic treatment of chronic leak after LSG. Further research is needed to clearly identify the appropriate treatment, but in our experience, RYGBP approach including the leak site offers a low morbidity rate.

Surgical Management of a Chronic Sleeve Gastrocolic Fistula with Near Total Gastrectomy and Roux-en-Y Reconstruction

BACKGROUND

Management of the leak is determined by the duration of the leak from the initial surgery. Acute leaks occurring less than 72 hours after surgery are best managed with reoperation and primary repair. Intermediate leaks, greater than 72 hours but less than 12 weeks, can be managed with non-operative management in non-septic patients. When non-operative management fails beyond 12 weeks the leak is considered a chronic fistula which are best treated with definitive operative management. Sub-total gastrectomy with Roux-En-Y reconstruction with gastrojejunostomy, has been reported with resolution of the fistula in over 90% of cases.

OBJECTIVES

To demonstrate the operative management of chronic sleeve gastrectomy leaks.

METHODS

A 37-year-old male with a history of a sleeve gastrectomy, developed a chronic fistula between the distal gastric staple line and the transverse colon. After non-operative management failed the patient was taken to the operating room for a diagnostic laparoscopy with plans to perform a revision. A fistula between the distal sleeve staple line and the transverse colon was identified. The gastroesophageal junction was dissected and inspected, there was no fistula at the angle of His. A near total gastrectomy was then performed leaving a small gastric pouch. The colonic side of the fistula was oversewn. Roux-En-Y reconstruction was then performed.

RESULTS

No leak identified at four-month follow-up.

CONCLUSION

Leak after sleeve gastrectomy can be difficult to manage. Chronic leaks do not respond well to non-operative management. Partial gastrectomy with Roux-En-Y reconstruction is a technically challenging option with good results.

The evolution of surgical treatment for chronic leak following sleeve

BACKGROUND

Leak is estimated to be the most severe complication of laparoscopic sleeve gastrectomy (LSG), with sporadic failure of endoscopic techniques. In such cases, an aggressive management with surgical reconstructive procedures can be proposed to patients in whom all the conservative endoscopic techniques failed.

OBJECTIVES

The purpose of the present study was to report our experience with surgical approach for the treatment of chronic leak after LSG.

SETTING

University hospital, France.

METHODS

Between January 2013-December 2019, 21 consecutive patients underwent reconstructive surgery for the treatment of chronic leak after LSG. The initial intervention, the endoscopic approach, and the definitive surgical repair were carefully reviewed.

RESULTS

Twenty-one patients (17 women) with a mean (standard deviation [SD]) age of 42.7 years (9.81) and a mean (SD) body mass index (BMI) of 27.3 (5.2) kg/m² underwent reconstructive surgery for persistent fistula. Seventeen patients (81%) had their early LSG performed in another hospital. Endoscopic treatment was represented by the pigtail drain or stent in 9 cases each, ovesco in 8 cases, and glue for 2 patients. The reconstructive surgery was performed within 6 months in 8 cases; between 6-12 months in 6 cases; between 1-3 years in 4 cases, and >3 years in 3 cases. There were 14 fistulo-jejunostomy (66.7%), 5 Roux-en-Y gastric bypass (23.8%), and 2 total gastrectomies (9.5%). The operative time was between 99 minutes and 5.5 hours (mean = 216.2, median = 225 min). The hospital stay ranged from 5-30 days (mean = 12.67, median = 11 d) and the surgical reintervention rate was 23.8% (5/21 patients), including 1 case of recurrent hemorrhage requiring 3 surgical operations over 1 month of postoperative follow-up. No postoperative mortality was recorded.

CONCLUSIONS

Surgery should be considered in case of failure of the endoscopic treatment of chronic leak after LSG. Further research is needed to clearly identify the appropriate treatment, but in our experience the fistulo-jejunostomy approach shows a low morbidity rate. (Surg Obes Relat Dis 2020;17:278-283.) © 2020 American Society for Metabolic and Bariatric Surgery. All rights reserved.