Managing Complications of Bariatric Surgery. Objectives
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1 Managing Complications of Bariatric Surgery John J. Vargo, II, MD, MPH, FACG Chair, Department of Gastroenterology and Hepatology Digestive Disease and Surgery Institute Cleveland Clinic Cleveland, OH Objectives Examine endoscopic treatment options for: Marginal ulceration Leaks fistulas GERD Stenosis Foreign body GI bleeding Choledocholithiasis Dilated stoma & weight recidivism Page 1 of 32
2 Types of Bariatric Surgery VBG Restrictive SG Restrictive LAGB Restrictive RYGB Restrictive Maldigestive Behavioral Modification DS/BPD Restrictive Maldigestive General Principles Direct communication with surgeon Operative note Roux limb length cm Use of silastic bands at G-J anastomosis Antecolic vs retrocolic roux approach Endoscope choice Early postoperative and /or leak, consider contrast study Page 2 of 32
3 Signs and Symptoms Prompting Endoscopic Evaluation Nausea Vomiting Dysphagia Pain Reflux Diarrhea Anemia / Bleeding Weight Gain Marginal Ulceration Page 3 of 32
4 Marginal Ulcers 1-6 mos after surgery, 95% by 12 mos Incidence: 1-36% Abd pain, nausea, bleeding, asymptomatic N = % healing with PPI Adding sulcralfate of no benefit 22 pts: suture / staple removal 5 pts: surgical revision, one emergent Azagury DE et al. Endoscopy 2011;43: Marginal Ulcers: Risk Factors No analysis of H. pylori Azagury DE et al. Endoscopy 2011; 43: Page 4 of 32
5 Marginal Ulcer Suture Staple Marginal Ulcer Therapy Endoscopic suturing Jirapinyo J, et al. Gastrointest Endosc 2012;76: Page 5 of 32
6 Leaks - Fistulas Anastomotic Leak Management Operative Laparoscopic vs. open repair Enteral access, drainage Non-operative NPO / TPN IV Abx G-tube Drainage Endoscopic Page 6 of 32
7 Leaks 1-6% incidence; lap>open Leaks: G-J anastomosis, > remnant stomach> J-J anastomosis Tachycardia, fever, N/V, abd pain Peritonitis, abscess, MOF, death Can present with tachycardia only #2 most common cause for mortality Leaks Mortality rate: 6-14% RYGB sites: GJA (68%), pouch staple lines 10%, JJA (5%), multiple 10% SG sites: 90% in proximal stomach near GEJ Page 7 of 32
8 Fistulas - Leaks Can be difficult CT / water soluble contrast: limited sensitivity but high PPV Endoscopy Endoscopy with fluoroscopy Injection of contrast Injection of contrast / methylene blue into drain Bubble test Fistulas Fistula: (gastro-gastric) Chronic GG fistula: highest when pouch and excluded stomach are contiguous N/V epigastric pain Weight gain Contrast study vs endoscopy Page 8 of 32
9 Suturing Stents SEMS SEPS Fistulas - Leaks Mechanical Closure Clips OTSC Closure Vacuumassisted Sponges Sealants Fibrin Cyanoacrylate Fistula Plugs Stents for Bariatric Surgery Leaks Pooled proportion of successful leak closure:87.8% (95% CI, 79.4%-94.2%). Pooled proportion of successful endoscopic stent removal: 91.6% (95% CI, 84.2%-96.8%) Stent migration: 16.9% (95% CI, 9.3%-26.3%) Puli et al Gastrointest Endosc 2012;75: Page 9 of 32
10 Leaks categorized based on time from initial operation Acute: <7 days Early: 1-6 weeks Late: 6-12 weeks Chronic: >12 weeks Stents appropriate for acute, early, and late Stents for Bariatric Surgery Leaks Document sealing Establish enteral nutrition if possible Evaluate q2-4 wks OR with New / Recurrent sx s Complications Migration Tissue ingrowth (change 2-4 wks or use SEPS indwell) Collapse Bleeding, Pain Page 10 of 32
11 Stent Placement (18 mm x 123 mm partially covered) Post-operative acute abdominal series Page 11 of 32
12 Post-operative acute abdominal series UGI series (Stent in place) Page 12 of 32
13 Endoscopic Closure of Postoperative Gastrointestinal Leakage and Fistulas with OTSC 9 upper, 5 lower leaks 100% technical success 5 months therapy 79% overall closure rate Includes chronic leaks Mennigen et al. J Gastrointest Surg 2013;17: Page 13 of 32
14 Endoscopic Repair of Gastrogastric Fistula After RYGB Fernandez-Esparrach G et al. Surg Obes Relat Dis 2010;6: pts Clip or Suture Mean f/u:395±49d 95% initial closure 59 (65%) with reopening at 177 ±202d Page 14 of 32
15 Hybrid ESD for Fistula Abidi WM, Thompson CC Gastrointest Endosc 2016;83: GERD Page 15 of 32
16 GERD Consider endoscopy refractory cases G-J anastomotic stenosis G-G fistula Tight band with VBD Motility disorders Endoscopic Management of Stenosis Page 16 of 32
17 Stenosis Unique to operation Most common in RYGB 3-22% Occurs in sleeve gastrectomy as well Approach needs to be tailored to operation Stenosis N/V, dysphagia, GERD Normal G-J anastomosis: mm Open RYGB: 3-9% Lap RYGB: 5-12% Page 17 of 32
18 Anatomic Considerations Operative notes Linear, circular stapler 21 or 25 mm Upper endoscopy Upper GI CT To evaluate extraluminal milieu Stenosis The most common sites of postoperative stenosis: Gastric band Gastrojejunal anastomosis (most common; 4-19% incidence) circular staplers have a significantly higher rate than hand-sewn or linear staplers. Site of passage through mesocolon Jejunojejunal anastomosis Adhesions Page 18 of 32
19 Stenosis Endoscopy preferable to contrast studies Beware retrocolic tunneled roux limb G-J anastomosis nl, jejunum beyond will be dilated until the point where it traverses the mesentery where the stricture will be seen. High perforation risk Classification of Strictures Chronicity Less than 90 days 90 days to 12 months Greater than 12 months Page 19 of 32
20 Classification of Strictures Chronicity Less than 90 days 90 days to 12 months Greater than 12 months Etiology Acute complications with late manifestation Leak, sub-clinical Technical Classification of Strictures Chronicity Less than 90 days 90 days to 12 months Greater than 12 months Etiology Acute complications with late manifestation Leak, sub-clinical Technical Chronic process Marginal ulceration - Smoking, NSAIDs Foreign body, carcinoma Page 20 of 32
21 Endoscopy for Stricture Management Dilation with balloons Bougie dilators for chronic, longsegment Stenosis Staged TTS balloon dilation to 15 mm 2-4 sessions Start 4 wks post op and repeat q2-3 wks 66-93% successful Suture / staple removal to optimize 15 mm target Decreased rate of restenosis Not associated with increased weight gain Alternative therapy: needle knife incision Steroid injection s/p TTS balloon dilation Peifer KJ, et al. Gastrointest Endosc 2007;66: Catalano MF, et al. Obes Surg 2007;17: Page 21 of 32
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24 Endoscopy for Stricture Management Response rates up to 90% for early strictures Etiologies? NSAIDS H pylori Foreign body (suture) Not without complications Recurrence, perforation Overall, safe and effective Ukleja et al, Surg Endosc 2008 Endoscopy for Stricture Management Response rates up to 90% for early strictures Not without complications Recurrence, perforation Overall, safe and effective Page 24 of 32
25 Bezoars First month postoperatively onward N/V, dysphagia VBG, RYGB Bezoar disruption and treatment of G-J anastomotic stenosis Foreign Body Sutures, staples, bands Pain, ulceration, bezoar, obstruction Variety of endoscopic devices can be used to remove sutures and staples Bands: VBG vs LAGB Surgery may be needed LAGB: endoscopic removal if buckle visible: transection then removal of device. SEPS for VBG and LAGB Page 25 of 32
26 GI Bleeding / Anemia Acute bleeding in early postoperative period, think staple line Iron deficiency in 30-50% of RYGB pts Multifactorial Endoscopic / imaging evaluation Low volume colonoscopy preps Retrograde exam of distal stomach / duodenum (pediatric colonoscope, enteroscope). Success much lower (25%) if roux limb >100 cm. Wright BE et al. Gastrointest Endosc 2002;56: Choledocholithiasis Postoperative incidence of cholelithiasis: 27-71% Postoperative incidence of choledocholithiasis: unknown Assessment: ultrasound, MRCP Approach to bile duct Deep enteroscopy platforms (>70% success rate) If Roux limb >100 cm, much lower success Laparoscopically assisted Percutaneous (IR or EUS-assisted) Deep enteroscopy-assisted PEG Lumen opposing metallic stents; risk of GGF? Page 26 of 32
27 Weight Gain Dilated pouch Dilated G-J anastomosis Endoscopic Revision Advantages: Avoids re-operative surgical intervention Low morbidity Disadvantages: Efficacy Long-term durability Page 27 of 32
28 Risk Factors for Weight Gain After RYGB GJ stoma diameter (mm) Time from RYGB (yr) Marginal ulcer presence Abu Dayyeh et al, Clin Gastroenterol Hepatol 2011;9: Endoscopic Suturing for Transoral Outlet Reduction (TORe) Increases Weight Loss After Roux-en-Y Gastric Bypass Surgery Multicenter RCT with sham controls Weight gain or inadequate weight loss after RYGB GJ diameter >2 cm The primary end point: weight loss at 6 months measured as a percentage of baseline weight. 77 pts enrolled Thompson CC et al., Gastroenterology 2013;145: Page 28 of 32
29 TORe Thompson CC et al., Gastroenterology 2013;145: TORe Weight loss or stabilization achieved in 96% subjects receiving TORe vs. 78% of controls (p=.019) Thompson CC et al., Gastroenterology 2013;145: Page 29 of 32
30 Modified TORe APC ablation of anastomotic margin Purse string suture Dilation balloon placed through second endoscope channel and inflated to 8 mm Purse string cinched around balloon Kumar N, Thompson CC. Gastrointest Endosc 2015;82:956. Sclerotherapy 2-center study 231 consecutive pts, 575 sclerotherapy procedures Abu Dayyeh et al., Gastrointest Endosc 2012;76: Page 30 of 32
31 Sclerotherapy Predictors of response 1. Amount of weight gain 2. # sclerotherapy sessions P=0.003 Abu Dayyeh et al., Gastrointest Endosc 2012;76: Modified ESD before G-J Revision Abidi WM et al, Gastrointest Endosc 2016;83: Page 31 of 32
32 Summary Many complications of bariatric surgery can be managed endoscopically Know the post surgical anatomy Each bariatric surgical procedure has its own footprint of complications Team approach Page 32 of 32
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