Role of endoscopic vacuum therapy in the management of gastrointestinal transmural defects

Current status in endoscopic management of upper gastrointestinal perforations, leaks and fistulas

Recent advancement in endoscopic closure techniques have revolutionized the treatment of gastrointestinal perforations, leaks and fistulas. Traditionally, these have been managed surgically. The treatment strategy depends on the size and location of the defect, degree of contamination, presence of healthy surrounding tissues, patients' condition and the availability of expertise. One of the basic principles of management includes providing a barricade to the flow of luminal contents across the defect. This can be achieved with a wide range of endoscopic techniques. These include endoclips, stenting, suturing, tissue adhesives and glue, and endoscopic vacuum therapy. Each method has their distinct indications and shortcomings. Often, a combination of these techniques is required. Apart from endoscopic closure, drainage procedures by the interventional radiologist and surgical management also play an important role. In this review article, the outcomes of each of these endoscopic closure techniques in the literature is provided in tables, and practical management algorithms are being proposed.

Endoluminal vacuum therapy in the management of an esophago-pleural fistula as a complication of Boerhaave syndrome in a patient with eosinophilic esophagitis

BACKGROUND

Boerhaave syndrome is an uncommon condition that represents about 15% of all esophageal perforation. A subset of these patients has eosinophilic esophagitis, a chronic inflammatory disease of the esophagus, that carries a risk of perforation of about 2%. Esophageal perforations can rarely result in the development of an esophago-pleural fistula. Treatment of esophago-pleural fistula represent a challenge due to lack of high quality evidence and scarce reported experience. Endoluminal vacuum-assisted therapy could have a role in the management by using the same principle applied in external wounds which provide wound drainage and tissue granulation.

CASE PRESENTATION

We report a unique case of a 24-year-old man with eosinophilic esophagitis complicated with an esophageal rupture who developed an esophago-pleural fistula and was successfully managed with a non-surgical approach using endoluminal vacuum-assisted therapy. To our knowledge this could be the first experience reported in a patient with eosinophilic esophagitis.

CONCLUSION

Endoluminal vacuum-assisted therapy might be an effective and novel strategy in patients with eosinophilic esophagitis and esophago-pleural fistula as a consequence of Boerhaave syndrome. Appropriately designed studies are required.

Cost-effective modified endoscopic vacuum therapy for the treatment of gastrointestinal transmural defects: step-by-step process of manufacturing and its advantages

Video 1Cost-effective modified endoscopic vacuum therapy for GI transmural defects. Step-by-step process of manufacturing and potential advantages.1.Cut half gauze to the ideal size to cover only the fenestrated portion of the nasogastric tube (NGT).2.Wrap the gauze around the fenestrated portion of the NGT. The assistance of another person is important in this process.3.Cut the antimicrobial incise drape to match the size of the fenestrated portion of the NGT. Note that the incise drape is a very strong adhesive; therefore, 3 people are usually required to assemble it properly.4.Next, the suture is used to fix the gauze and drape to the NGT. Perform fixation of the modified sponge in 3 places. The first knot is in the proximal portion, just below the last fenestra of the NGT, as a marker of where the vacuum system starts. The second knot is at the distal end, to avoid migration of the modified sponge. The third knot is in the middle of the modified sponge, which is essential to serve as a guide during endoscopic placement. For example, in cases of defects without collection in which the sponge will be placed in an intraluminal position, it is ideal to place the vacuum system in the middle of the defect; in cases of intracavitary placement, it will work as a guide to how much of the modified sponge will be inside the collection.5.Finally, use a needle to make innumerable punctures in the modified sponge system to obtain adequate aspiration. An 18G needle is recommended because, in addition to having an adequate diameter, it is very sharp, which facilitates perforation of the modified sponge system.6.After creation of the modified endoscopic vacuum therapy, the functionality test is performed. Turn on the wall suction system, connect the distal end of the NGT to the tube of the canister connected on the wall, and place the NGT inside a bowl with a liquid solution. The aspiration of a large amount of liquid indicates proper functioning of the modified endoscopic vacuum therapy system.7.The device is then ready to be positioned endoscopically in the patient. After proper positioning, connect the NGT to the suction tube to avoid migration of the device upon removal of the scope.8.In addition to the cost-effective device as described, in our practice we also use wall suction to reduce costs associated with the use of the vacuum machine.9.Use the antimicrobial incise drape to seal the connection between the NGT and the suction tube to avoid leakage within the connection.10.Last, owing to instability of the negative wall pressure, a 20F intravenous catheter is connected to the tube to maintain a negative pressure between -75 and -150 mmHg, as confirmed by laboratory studies performed by our group.

Endoscopic negative pressure therapy as stand-alone treatment for perforated duodenal diverticulum: presentation of two cases

Background

Endoscopic negative pressure therapy is a novel and successful treatment method for a variety of gastrointestinal leaks. This therapy mode has been frequently described for rectal and esophageal leakages. Duodenal diverticular perforations are rare but life-threatening events. The early diagnosis of duodenal diverticular perforation is often complicated by inconclusive symptoms. This is the first report about endoscopic negative pressure therapy in patients with perforated duodenal diverticula.

Case presentation

We present two cases of duodenal diverticula perforations treated with endoscopic negative pressure therapy as stand-alone treatment. Start of symptoms varied from one to three days before hospital admission. Early sectional imaging led to the diagnosis of duodenal diverticular perforation. Both patients were treated with endoluminal endoscopic negative pressure therapy with simultaneous feeding option. Three respective changes of the suction device were performed. Both patients were treated with antibiotics and antimycotics during their hospital stay and be discharged from hospital after 20 days.

Conclusions

This is the first description of successful stand-alone treatment by endoscopic negative pressure therapy in two patients with perforated duodenal diverticulum. We thus strongly recommend to attempt interventional therapy with endoluminal endoscopic negative pressure therapy in patients with duodenal diverticular perforations upfront to surgery.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12876-021-02018-7.

Current Status of Endoscopic Vacuum Therapy in the Management of Esophageal Perforations and Post-Operative Leaks

Esophageal wall defects, including perforations and postoperative leaks, are associated with high morbidity and mortality and pose a significant management challenge. In light of the high morbidity of surgical management or revision, in recent years, endoscopic vacuum therapy (EVT) has emerged as a novel alternative treatment strategy. EVT involves transoral endoscopic placement of a polyurethane sponge connected to an externalized nasogastric tube to provide continuous negative pressure with the intention of promoting defect healing, facilitating cavity drainage, and ameliorating sepsis. In the last decade, EVT has become increasingly adopted in the management of a diverse spectrum of esophageal defects. Its popularity has been attributed in part to the growing body of evidence suggesting superior outcomes and defect closure rates in excess of 80%. This growing body of evidence, coupled with the ongoing evolution of the technology and techniques of deployment, suggests that the utilization of EVT has become increasingly widespread. Here, we aimed to review the current status of the field, addressing the mechanism of action, indications, technique methodology, efficacy, safety, and practical considerations of EVT implementation. We also sought to highlight future directions for the use of EVT in esophageal wall defects.

Learning of flexible endoscopy, particularly endoscopic vacuum therapy (EVT)

BACKGROUND

Anastomotic insufficiency and perforations in the gastrointestinal tract are severe complications associated with a high complication rate and mortality. Conventional treatment options (particularly re-operations) are often unsatisfactory. Endoscopic vacuum therapy (EVT) is increasingly being used as a promising alternative.

PROBLEM

The use of EVT requires a high level of competence in interventional flexible endoscopy, which is primarily not available to every surgeon. Special training programs are required here.

METHODS

Based on this need the long-proven Tuebingen training system for flexible endoscopy was modified to meet the special requirements of surgeons and is currently being extended by a special training module for EVT.

RESULTS

In addition to the theoretical principles, the training is focused on learning the manual skills for flexible endoscopy. A 2-stage process was developed for this purpose: 1) to become familiar with handling of the flexible endoscope and to learn spatial orientation by means of a didactically optimized abstract phantom ("Tuebingen Orientophant") and 2) learning and training of EVT using a newly developed patient-analogous training model with various insufficiencies and abscess cavities in the upper and lower gastrointestinal tract ("Tuebinger Spongiophant"). The procedure can be trained hands-on step by step exactly as with the patient, whereby the sponge can be applied using different methods, such as overtube and dragging procedures. The consequences of mistakes and complication management can also ideally be trained hands-on using the phantom.

DISCUSSION

Evaluations of the first course series show that surgeons achieve endoscopic competence very quickly and learn to master the new procedure. The structure of such a course must, however, be designed according to long-term experience in an optimal didactic manner. Decision-makers in healthcare policy should give much more support to such courses in order to improve patient care and to increase patient safety.

Endoscopic vacuum therapy versus endoscopic stenting for upper gastrointestinal transmural defects: Systematic review and meta-analysis

BACKGROUND

Upper gastrointestinal fistulas, leaks, and perforations represent a high cost burden to health systems worldwide, with high morbidity and mortality rates for affected patients. Management of these transmural defects remains therapeutically challenging.

OBJECTIVES

The aim of this study is to perform a systematic review and meta-analysis to investigate the efficacy and safety of self-expanding metal stents (SEMS) versus endoscopic vacuum therapy (EVT) for treatment of upper gastrointestinal transmural defects.

METHODS

Searches were performed on MEDLINE, EMBASE, Central Cochrane, Latin American and Caribbean Health (LILACS), and gray literature, as well as a manual search to identify studies comparing SEMS versus EVT to treat upper gastrointestinal transmural defects. Evaluated outcomes were: rates of successful closure, mortality, length of hospital stay, duration of treatment, and adverse events.

RESULTS

Five studies with a total of 274 patients were included. There was a 21% increase in successful fistula closure attributed to EVT compared with the SEMS group (RD 0.21, CI 0.10-0.32; P = 0.0003). EVT demonstrated a 12% reduction in mortality compared to stenting (RD 0.12, CI 0.03-0.21; P = 0.006) and an average reduction of 14.22 days in duration of treatment (CI 8.38-20.07; P < 0.00001). There was a 24% reduction in adverse events (RD 0.24, CI 0.13-0.35; P = 0.0001. There were no statistical differences between the studied therapies regarding the length of hospital stay.

CONCLUSION

Endoscopic vacuum therapy proves to be superior in successful defect closure, mortality, adverse events and duration of treatment.

Successful Late Endoscopic Stent-Grafting in a Patient with Boerhaave Syndrome

Patient: Male, 53-year-old

Final Diagnosis: Spontaneous esophageal rupture

Symptoms: Chest pain • dyspena • hydropneumothorax • purulent discharge from the umbilicus • vomiting

Medication: —

Clinical Procedure: Endoscopic stent-grafting • enteral feeding • pleural drainage

Specialty: Gastroenterology and Hepatology • Surgery

AGA Clinical Practice Update on Evaluation and Management of Early Complications After Bariatric/Metabolic Surgery: Expert Review

DESCRIPTION

Endoscopic techniques are paramount in the identification and management of complications after surgery, though collaboration with other specialties is obligatory. Unfortunately, the evaluation and treatment algorithms are not standardized and there is a paucity of high-quality prospective studies to provide clarity regarding the best approach. The purpose of this clinical practice update is to apprise the clinician with respect to the endoscopic evaluation and management of patients with early (<90 days) complications after undergoing bariatric/metabolic surgery.

METHODS

The best practice advice outlined in this expert review are based on available published evidence, including observational studies and systematic reviews, and incorporates expert opinion where applicable. BEST PRACTICE ADVICE 1: Clinicians performing endoscopic approaches to treat early major postoperative complications should do so in a multidisciplinary manner with interventional radiology and bariatric/metabolic surgery co-managing the patient. Daily communication is advised. BEST PRACTICE ADVICE 2: Clinicians embarking on incorporating endoscopic management of bariatric/metabolic surgical complications into their clinical practice should have a comprehensive knowledge of the indications, contraindications, risks, benefits, and outcomes of each of the endoscopic treatment techniques. They should also have knowledge of the risks and benefits of alternative methods such as surgical and interventional radiological based approaches. BEST PRACTICE ADVICE 3: Clinicians incorporating endoscopic management of bariatric/metabolic surgical complications into their clinical practice should have expertise in interventional endoscopy techniques, including but not limited to: using concomitant fluoroscopy, stent deployment and retrieval, managing stenosis, and managing percutaneous drains. BEST PRACTICE ADVICE 4: Clinicians should screen all patients undergoing endoscopic management of bariatric/metabolic surgical complications and dietary intolerance for comorbid medical (nutrient deficiencies, infection, pulmonary embolism) and psychological (depression, anxiety) conditions. BEST PRACTICE ADVICE 5: Endoscopic approaches to managing complications of bariatric/metabolic surgery may be considered for patients in the immediate, early and late postoperative periods depending on hemodynamic stability. BEST PRACTICE ADVICE 6: Clinicians incorporating endoscopic management of bariatric/metabolic surgical complications into their clinical practice should have a detailed understanding of the pathophysiologic mechanisms initiating and perpetuating conditions such as staple-line leaks. This will allow for a prompt diagnosis and appropriate therapy to be targeted not only at the area of interest, but also any concomitant downstream stenosis. BEST PRACTICE ADVICE 7: Clinicians should recognize that the goal for endoscopic management of staple-line leaks are often not necessarily initial closure of the leak site, but rather techniques to promote drainage of material from the perigastric collection into the gastric lumen such that the leak site closes by secondary intention.

Endoscopic vacuum therapy for anastomotic leak in esophagectomy and total gastrectomy: a systematic review and meta-analysis

The curative treatment for esophageal and gastric cancer is primarily surgical resection. One of the main complications related to esophagogastric surgery is the anastomotic leak. This complication is associated with a prolonged length of stay, reduced quality of life, high treatment costs, and an increased mortality rate. The placement of endoluminal stents is the most frequent endoscopic therapy in these cases. However, since its introduction, endoscopic vacuum therapy has been shown to be a promising alternative in the management of this complication. This study primarily aims to evaluate the efficacy and safety of endoscopic vacuum therapy for the treatment of anastomotic leak in esophagectomy and total gastrectomy. A systematic review and meta-analysis was performed. Studies that evaluated the use of endoscopic vacuum therapy for anastomotic leak in esophagectomy and total gastrectomy were included. Twenty-three articles were included. A total of 559 patients were evaluated. Endoscopic vacuum therapy showed a fistulous orifice closure rate of 81.6% (rate: 0.816; 95% CI: 0.777-0.864) and, when compared to the stent, there is a 16% difference in favor of endoscopic vacuum therapy (risk difference [RD]: 0.16; 95% CI: 0.05-0.27). The risk for mortality in the endoscopic vacuum therapy was 10% lower than in endoluminal stent therapy (RD: -0.10; 95% CI: -0.18 to -0.02). Endoscopic vacuum therapy might have a higher rate of fistulous orifice closure and a lower rate of mortality, compared to intraluminal stenting.

EFFICACY OF ENDOSCOPIC TOPICAL MITOMYCIN C APPLICATION IN CAUSTIC ESOPHAGEAL STRICTURES IN THE PEDIATRIC POPULATION: A SYSTEMATIC REVIEW AND META-ANALYSIS OF RANDOMIZED CONTROLLED TRIALS

BACKGROUND

Caustic ingestion and development of esophageal strictures are recognized major public health problems in childhood. Different therapeutic methods have been proposed in the management of such strictures.

OBJECTIVE

To evaluate efficacy and risk of endoscopic topical application of mitomycin C in the treatment of caustic esophageal strictures.

METHODS

We searched MEDLINE, EMBASE, Central Cochrane, and LILACS databases. The outcomes evaluated were dysphagia resolution rate, number of dilations performed in resolved cases, and the number of dilations performed in all patients.

RESULTS

Three randomized clinical trials were included for final analysis with a total of 190 patients. Topical mitomycin C application group showed a significant increase in dysphagia resolution rate, corresponding to a 42% higher dysphagia resolution as compared to endoscopic dilation alone, with statistical significance between the two groups (RD: 0.42 - [CI: 0.29-0.56]; P-value <0.00001). The mean number of dilations performed in resolved cases were significantly less in the topical mitomycin C application group, compared to endoscopic dilations alone, with statistical significance between the two groups (MD: 2.84 [CI: 1.98-3.69]; P-value <0.00001). When comparing the number of dilations in all patients, there was no statistical difference between the two groups (MD: 1.46 [CI: -1.53-4.44]; P-value =0.34).

CONCLUSION

Application of topical mitomycin C with endoscopic dilations in caustic esophageal strictures was more effective in dysphagia resolution than endoscopic therapy alone in the pediatric population. Moreover, topical mitomycin C application also reduced the number of dilation sessions needed to alleviate dysphagia without rising morbidity.

Effectiveness of endoscopic vacuum therapy as rescue treatment in refractory leaks after gastro-esophageal surgery

The treatment of leak after esophageal and gastric surgery is a major challenge. Over the last few years, endoscopic vacuum therapy (E-VAC) has gained popularity in the management of this life-threatening complication. We reported our initial experience on E-VAC therapy as rescue treatment in refractory anastomotic leak and perforation after gastro-esophageal surgery. From September 2017 to December 2019, a total of 8 E-VAC therapies were placed as secondary treatment in 7 patients. Six for anastomotic leak (3 cervical, 1 thoracic, 2 abdominal) and 1 for perforation of the gastric conduit. In 6 cases, E-VAC was placed intracavitary; while in the remaining 2, the sponge was positioned intraluminal (one patient was treated with both approaches). A total of 60 sponges were used in the whole cohort. The median number of sponge insertions was 10 (range: 5-14) with a median treatment duration of 41 days (range: 19-49). A complete healing was achieved in 4 intracavitary (67%) and in 1 intraluminal (50%) E-VAC. We observed only one E-VAC-related complication: a bleeding successfully managed endoscopically. E-VAC therapy seems to be a safe and effective tool in the management of leaks and perforations after upper GI surgery, although with longer healing time when it is used as secondary treatment.

Endoscopic negative pressure therapy (ENPT) in head and neck surgery: first experiences in treatment of postoperative salivary fistulas and cervical esophageal perforations

INTRODUCTION

Iatrogenic cervical esophageal perforations (CEP) and postoperative salivary fistulas (PSF) are some of the complications requiring treatment in head and neck surgery. Conservative, surgical and endoscopic therapeutic techniques are used. Both CEP and PSF are potentially life-threatening complications and require intensive treatment. Endoscopic negative pressure therapy (ENPT) is an innovative endoscopic surgical procedure for the treatment of transmural intestinal defects throughout the gastrointestinal tract (GIT). In this retrospective study, we demonstrate its application in head and neck surgery.

MATERIALS AND METHODS

In ENPT, open-pore drains are placed endoscopically in the wound area. The drains can be inserted in an intraluminal position spanning the length of the defect (intraluminal ENPT), or through the defect into the extraluminal wound cavity (intracavitary ENPT). An electronic suction pump applies and maintains a continuous negative pressure of - 125 mmHg over a period of several days. The endoscopic drains are changed at regular intervals every few days until stable intracorporeal wound healing by secondary intention or defect closure is achieved. Between 06/2008 and 05/2019 ten patients (f = 3, m = 7; 46-78 years old) were treated with ENPT for CEP or PSF. Five patients had postoperative wound defects with consecutive PSF after total laryngectomy or floor of mouth resection. In five patients iatrogenic CEP was found following endoscopic procedures.

RESULTS

In all patients treated with ENPT, healing of the perforation defect or fistula was achieved (cure rate 100%). The median treatment duration was 13.7 days (range 4-42 days). No relevant treatment-associated complications were observed.

CONCLUSION

ENPT is a new, minimally invasive method for treating PSF and CEP.

A novel treatment for esophageal lesions following atrial fibrillation ablation

This study presents a novel technique for the treatment of a deep esophageal ulcer after ablation of paroxysmal atrial fibrillation (AF). Pulmonary vein isolation was performed using a radiofrequency irrigated tip catheter. On Day 5 of follow-up, a deep esophageal ulcer was observed. No significant visual improvement was observed after conventional treatment. Endoscopic negative pressure therapy in the esophagus was then applied for 5 days. A significant decrease in diameter and depth of the lesion was observed, possibly preventing perforation. Endoscopic negative pressure therapy can be used to heal thermal lesions after AF ablation procedures.

The assessment of intraoperative technique-related risk factors and the treatment of anastomotic leakage after esophagectomy: a narrative review

Anastomotic leakage, including cervical anastomotic leakage and intrathoracic anastomotic leakage, is a serious complication of esophageal cancer and a leading cause of death after esophagectomy. In fact, anastomotic leakage after esophagectomy can be caused by numerous factors in the preoperative, intraoperative, and postoperative periods. Intraoperative technique-related risk factors, including surgical methods, anastomosis sites, anastomosis methods, the type of gastric tube, and reconstruction routes, are the key causes of its occurrence. Anastomotic leakage treatments include both surgical and non-surgical treatments, while surgical treatment has high risks, many complications, and high mortality. Actually, non-surgical methods including naso-leakage drainage, stent, negative pressure therapy, and so on, are also very critical in the treatment of anastomotic leakage. So, the selection of correct and appropriate treatment methods plays an important role in alleviating the suffering of patients, shortening hospitalization time, and reducing mortality. This study undertook a systematic review in which data in the PubMed database were searched and analyzed to assess the safety and efficacy of surgical technique-related factors in esophagectomy, and appropriate treatment of anastomotic leakage after esophagectomy. In conclusion, gastric tube, posterior mediastinal route and stapled anastomosis are safe among esophagectomy surgical techniques, and non-surgical treatment of anastomotic leakage such as naso-leakage drainage is feasible in the majority of cases.

Economic Burden of Endoscopic Vacuum Therapy Compared to Alternative Therapy Methods in Patients with Anastomotic Leakage After Esophagectomy

BACKGROUND

Endoscopic vacuum therapy (EVT) has become a promising option in the management of anastomotic leakage (AL) after esophagectomy. However, EVT is an effortful approach associated with multiple interventions. In this study, we conduct a comparative cost analysis for methods of management of AL.

METHODS

All patients who experienced AL treated by EVT, stent, or reoperation following Ivor Lewis esophagectomy for esophageal cancer were included. Cases that were managed by more than one modality were excluded. For the remaining cases, in-patient treatment cost was collected for material, personnel, (par)enteral nutrition, intensive care, operating room, and imaging.

RESULTS

42 patients were treated as follows: EVT n = 25, stent n = 13, and reoperation n = 4. The mean duration of therapy as well as length of overall hospital stay was significantly shorter in the stent than the EVT group (30 vs. 44d, p = 0.046; 34 vs. 53d, p = 0.02). The total mean cost for stent was €33.685, and the total cost for EVT was €46.136, resulting in a delta increase of 37% for EVT vs. stent cost. 75% (€34.320, EVT), respectively, 80% (€26.900, stent) of total costs were caused by ICU stay. Mean pure costs for endoscopic management were relatively low and comparable between both groups (EVT: €1.900, stent: €1.100, p = 0.28).

CONCLUSION

Management of AL represents an effortful approach that results in high overall costs. The expenses directly related to EVT and stent therapy were however comparatively low with more than 75% of costs being attributable to the ICU stay. Reduction of ICU care should be a central part of cost reduction strategies.

Endoluminal Vacuum Therapy for Iatrogenic Perforation of the Proximal Esophagus—Case Report of a Patient with Esophageal Involvement in Pemphigus Vulgaris

Pemphigus vulgaris (PV) is a rare autoimmune disease affecting the skin and mucous membranes. Recent studies have shown a relatively high incidence of esophageal involvement in PV. To distinguish between the esophageal involvement of PV and other pathologies, early endoscopic evaluation is essential to obtain tissue for histological analysis. Here, we present the first case of endoluminal vacuum therapy (EVT) for a patient with esophageal involvement in PV and with associated iatrogenic perforation of the proximal esophagus. In comparison to classical treatment options for perforations of the proximal esophagus consisting of either stent insertion or surgical intervention, EVT seems to be a promising alternative with a good clinical outcome.

Management of Tumor- and Nontumor-related Aorto-esophageal and Aorto-bronchial Fistulas

BACKGROUND

This study aims to review and compare the clinical presentation, management, and outcome in patients with tumor-related (TR) and nontumor-related (NTR) aorto-esophageal fistula (AEF) and aorto-bronchial fistula (ABF) with particular focus on the thoracic endovascular aortic repair.

METHODS

We retrospectively reviewed a series of 16 consecutive patients with TR (n = 8) and NTR (n = 8), ABF (n = 6), and AEF (n = 10) admitted to our hospital from 2011 to 2019.

RESULTS

The median age was 62 years (range 46-81), with 11 men. The most common predisposing factor was esophageal or gastric cardia cancer (n = 6), followed by open repair of the thoracic aorta (n = 5). Endoluminal vacuum therapy (Endo-SPONGE®) accounted for 3 cases of AEFs. Thoracic endovascular aortic repair (TEVAR) was applied in 13 patients (4 with ABFs and 9 with AEFs). The primary technical success of the TEVARs was 100%. One patient (8%) was complicated with postoperative middle cerebral artery syndrome and left-sided hemiparesis. The respective in-hospital, 6-month, and 1-year mortality rates were 0% (n = 0), 25% (n = 2), and 25% (n = 2) for the NTR group and 63% (n = 5), 88% (n = 7), and 100% (n = 8) for the TR group. After a mean period of 13 months, 5 (31%) patients were still alive, and one patient lost to follow-up after 11 months. The survivors (n = 5) had all nontumor-related ABF. Progression of underlying cancer and hemodynamic shock were the most common causes of death.

CONCLUSIONS

TEVAR represents a reliable option in the treatment of NTR ABFs. In the cases of TR fistulas and NTR AEFs, TEVAR should be applied more selectively. The associated mortality remains very high.

Preemptive endoluminal vacuum therapy after pancreaticoduodenectomy: A case report

BACKGROUND

Pancreaticoduodenectomy is a technically demanding operation, with reported morbidity rates of approximately 40%–50%. A novel idea is to use endoscopic vacuum therapy (EVT) in a preemptive setting to prevent anastomotic leakage and pancreatic fistulas. In a recent case series, EVT was proven to be effective in preventing leaks in patients with anastomotic ischemia. There have been no previous reports on preemptive EVT after pancreaticoduodenectomy.

CASE SUMMARY

We describe the case of a 71-year-old woman with hypertension and diabetes who was admitted to the emergency room with jaundice, choluria, fecal acholia, abdominal pain, and fever. Admission examinations revealed leukocytosis and hyperbilirubinemia (total: 13 mg/dL; conjugated: 12.1 mg/dL). Abdominal ultrasound showed cholelithiasis and dilation of the common bile duct. Magnetic resonance imaging demonstrated a stenotic area, and a biopsy confirmed cholangiocarcinoma. Considering the high risk of leaks after pancreaticoduodenectomy, preemptive endoluminal vacuum therapy was performed. The system comprised a nasogastric tube, gauze, and an antimicrobial incise drape. The negative pressure was 125 mmHg, and no adverse events occurred. The patient was discharged on postoperative day 5 without any symptoms.

CONCLUSION

Preemptive endoluminal vacuum therapy may be a safe and feasible technique to reduce leaks after pancreaticoduodenectomy.

Efficacy and Patient Tolerability of Split-Dose Sodium Picosulfate/Magnesium Citrate (SPMC) Oral Solution Compared to the Polyethylene Glycol (PEG) Solution for Bowel Preparation in Outpatient Colonoscopy: An Evidence-Based Review

BACKGROUND

Colonoscopy is the gold standard exam for evaluation of colonic abnormalities and for screening and surveillance for colorectal cancer. However, the efficacy of colonoscopy is dependent on the quality of the pre-colonoscopy bowel preparation. Polyethylene glycol (PEG) and sodium picosulfate/magnesium citrate (SPMC) have emerged as two of the most commonly used bowel preparation agents. We conducted an evidence-based review of current evidence to further investigate the efficacy and patient tolerability of split-dose SPMC oral solution compared to PEG solution for colonoscopy bowel preparation.

METHODS

A systematic search was performed using Pubmed (MEDLINE), Web of Science, EMBASE, and Cochran Central Register of Controlled Trials databases. All studies on split-dose bowel preparation with SPMC and PEG were reviewed. Relevant studies regarding colonoscopy and bowel preparations were also included. Randomized controlled trials were prioritized due to the high quality of evidence.

RESULTS

Eight randomized controlled trials were included. Split-dose SPMC and PEG were associated with similar results for adequacy of bowel preparation. Split-dose SPMC was associated with increased patient tolerability and compliance.

CONCLUSION

Split-dose SPMC and PEG are both adequate and safe for bowel preparation for outpatient colonoscopy, with split-dose SPMC being more tolerable for patients. Additional RCTs comparing these and other bowel preparation solutions are necessary to further investigate quality of bowel preparation, patient preference, and cost-effectiveness of the various options.

Gastric conduit perforation after Ivor Lewis esophagectomy successfully treated with endoscopic vacuum therapy (E-VAC): a case report

Gastric conduit perforation is a life-threatening complication after esophagectomy and currently there is no consensus about its optimal management. Endoscopic vacuum therapy (E-VAC) is a promising technique for the treatment of leaks and perforations after upper gastro-intestinal surgery. We report the case of a 65 years-old male patient who underwent an Ivor Lewis esophagectomy for esophago-gastric junction adenocarcinoma. He referred to our Emergency Department for septic shock and right hydropneumothorax. We performed an emergency thoracoscopy with intraoperative esophagogastroduodenoscopy which showed a pre-pyloric perforation of the gastric conduit. The perforation was initially treated with unsuccessful primary surgical closure and subsequently by means of E-VAC, firstly placed intraluminal and then intracavitary. With the latter technique, we assisted to a progressive clinical improvement until the definitive healing of the perforation. To our knowledge, this is the first case of a gastric tube perforation after esophagectomy successfully treated with E-VAC.

Role of Endoscopic Vacuum Therapy as a Treatment for Anastomosis Leak after Esophageal Cancer Surgery

Esophageal anastomotic leak is the most common and serious complication following esophagectomy. However, the standard treatment for anastomotic leaks remains unclear. Recently, endoscopic vacuum therapy has become an important non-surgical alternative treatment method for patients with esophageal anastomotic leak. This treatment involves the endoscopic placement of a sponge connected to a nasogastric tube into the defect cavity or lumen. Subsequently, continuous negative pressure is delivered to the cavity through the tube. Several studies have reported a treatment success rate of 80% to 100%. In this study, we review the mechanism of action, the method of performing the procedure, its safety and efficacy, and prognostic factors for failure of endoscopic vacuum therapy in the management of patients with anastomotic leak, and on this basis attempted to confirm the possibility of establishing a standardized treatment protocol using endoscopic vacuum therapy.

Management of Complications After Esophagectomy

Esophagectomy is a complex operation with many potential complications. Early recognition of postoperative complications allows for the best chance for patient survival. Diagnosis and management of conduit complications, including leak, necrosis, and conduit-airway fistulae, are reviewed. Other common complications, such as chylothorax and recurrent laryngeal nerve injury, also are discussed.

Efficacy of Intragastric Balloons for Weight Loss in Overweight and Obese Adults: a Systematic Review and Meta-analysis of Randomized Controlled Trials

Intragastric balloons (IGB) are the most widely used endoscopic bariatric and metabolic therapies. We aimed to evaluate the efficacy of IGB in comparison with sham or lifestyle interventions for weight loss in overweight and obese patients. This systematic review and meta-analysis was performed following the PRISMA guidelines. Electronic searches were performed to identify randomized controlled trials, which compared IGB with sham or lifestyle intervention. Thirteen RCTs with 1523 patients were included. The difference in mean %EWL and %TWL at follow-up was 17.98%, and 4.40%, respectively, which was significantly higher in the IGB group. Similarly, the difference in mean AWL and BMIL was 6.12 kg, and 2.13 kg/m2, respectively. IGB therapy is more effective than lifestyle intervention alone for weight loss in overweight and obese adults.

Endoscopic submucosal dissection versus transanal endoscopic surgery for the treatment of early rectal tumor: a systematic review and meta-analysis

BACKGROUND

Minimally invasive treatment of early-stage rectal lesion has presented good results, with lower morbidity than surgical resection. Transanal endoscopic microsurgery (TEM) and transanal minimally invasive surgery (TAMIS) are the main methods of transanal surgery. However, endoscopic submucosal dissection (ESD) has been gaining ground because it allows en bloc resections with low recurrence rates. The aim of this study was to analyze ESD in comparison with transanal endoscopic surgery.

METHODS

We searched MEDLINE, EMBASE, SciELO, Cochrane CENTRAL, and Lilacs/Bireme with no restrictions on the date or language of publication. The outcomes evaluated were recurrence rate, complete (R0) resection rate, en bloc resection rate, length of hospital stay, duration of the procedure, and complication rate.

RESULTS

Six retrospective cohort studies involving a collective total of 326 patients-191 in the ESD group and 135 in the transanal endoscopic surgery group were conducted. There were no statistically significant differences between the groups for any of the outcomes evaluated.

CONCLUSIONS

For the minimally invasive treatment of early rectal tumor, ESD and surgical techniques do not differ in terms of local recurrence, en bloc resection rate, R0 resection rate, duration of the procedure, length of hospital stay, or complication rate, however, evidence is very low.

Rigid esophagoscopy combined with angle endoscopy for treatment of superior mediastinal foreign bodies penetrating into the esophagus caused by neck trauma: A case report

BACKGROUND

Herein, we report a case in whom two foreign bodies entered the upper mediastinal cavity from the cervical root and subsequently the esophagus. Surgery is the preferred treatment method, and operational procedures depend on the size and location of the foreign body relative to the mediastinal vessels. Rigid esophagoscopy combined with angle endoscopic surgery was selected to avoid surgical trauma and complications.

CASE SUMMARY

A 63-year-old male patient with a 6-mo old history of neck trauma presented with a black-brown foreign body in the lateral wall of the esophagus. Neck and chest computed tomography (CT) revealed that two superior mediastinal foreign bodies penetrated the esophagus diagonally. We removed two foreign bodies through an esophagoscope. Owing to the rigid working channel of esophagoscope and good exposure of endoscope, the risk of injury to the adjacent vital tissues was minimized. Postoperative comprehensive therapies, including antibiotic administration and nutritional support, resulted in a prompt postoperative recovery. Postoperative CT confirmed the absence of a residual foreign body and neck and chest infections. In addition, upper gastrointestinal angiography and gastroscopy revealed the absence of an evident esophageal perforation. The patient received an oral diet and did not experience any complication at the time of discharge from the hospital.

CONCLUSION

Rigid esophagoscopy combined with angle endoscopy is an effective, minimally invasive treatment for penetrating neck injuries.