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1145 Jamil Altered Anatomy and Endoscopy [Recovered] Copy Altered Anatomy and Endoscopy Laith H Jamil, MD, FASGE, FACG Associate Professor / Cedars Sinai Medical Center Key Points for Success § What is the altered anatomy? § What kind of surgery (operative report) § Indication and what (where) do you want to reach § What scope(s) will get you there § What accessories will you need § Positioning of the patient § Sedation § Fluoroscopy § Length of procedure § Know the “expected” anatomy § Bring your dinner for evening cases! Natural Anatomical Variants § Zencker’s diverticulum § Malrotation of the gut § Situs Inversus Case § 90 + year old presents with symptoms suggestive of ascending cholangitis (Abn LFTs, confusion, hypotension, elevated WBC) § Patient intubated § Unable to advance the duodenoscope across the UES Zenker’s False Diverticulum § Just above the cricopharyngeal muscle § Suspect if resistance is encountered during intubation of the upper esophagus § Use a forward viewing gastroscope for evaluation and diagnosis § Exchange scope over a wire http://headandnecksurgery.ucla.edu/body.cfm?id=127 Zenker’s False Diverticulum § If fail, advance a large overtube over a forward viewing gastroscope and advance the duodenoscope through the overtube Mal-rotation of the gut § Duodenojejunal flexure to lie to the right of the midline § Duodenal tract will be different § Should not impact ERCP significantly https://www.med-ed.virginia.edu/courses/rad/peds/abd_webpages/abdominal16.html Situs Inversus § Organs in the chest and abdomen are positioned in a mirror image from their normal positions § Make sure your flouro images http://emedicine.medscape.com/article/413679-overview are correct! Types of Surgeries § Bariatric surgeries: Restrictive, Malabsorptive, Combination § Esophageal surgeries § Antireflux surgeries § Gastric surgeries – Billroth I, Billroth II, Roux-en-Y gastrectomy, partial and total gastrectomy, Gastric bypass (gastrojejunostomy) without gastric resection § Duodenal Bypass Restrictive Bariatric Surgeries § Vertical Band Gastroplasty § Laparoscopic Adjustable Gastric Band § Sleeve Gastrectomy Vertical Band Gastroplasty - Normal esophagus, GE junction - Gastric pouch with banded stoma - The banded stoma is generally 10 to 12 mm in diameter - Normal distal stomach and duodenum Huang C et al Gastro Cli N A 2005 Laparoscopic Adjustable Gastric Band - Normal esophagus, GE junction - Proximal gastric pouch - Impression of the band - Normal distal gastric pouch and duodenum Sleeve Gastrectomy - Normal esophagus, GE junction - Long tubular stomach - Staple line parallel to lesser curvature - Normal pylorus & duodenum ERCP in Restrictive Bariatric Surgeries § Better to start with a forward viewing gastroscope § If anticipate difficulty passing a duodenoscope, then dilate up to 13.5- 15 mm using a CRE balloon § Position of the duodenoscope for cannulation might be slightly different Malabsorptive Biliopancreatic diversion ERCP not possible Jejunoileal bypass ERCP possible Biliopancreatic diversion and duodenal switch ERCP not possible Roux-en-Y Gastric Bypass (RYGB) - Normal esophagus and GE junction - Gastric pouch (size varies) - GJ usually 10-12 mm - A short, Blind limB is often visiBle alongside the efferent jejunal limB - The Roux limB is usually 75cm-150 cm - Bilio-Pancreatic limB length varies, usually around 40 cm http://www.weightlosssurgery.ca/about-our- surgeries/laparoscopic-roux-en-y-gastric-bypass/ Roux-en-Y Gastric Bypass (RYGB) § Jejuno-jejunal (J-J) anastomosis occasionally accessible with a forward- viewing endoscope § J-J anastomosis can be side to side, or end to side (difficult intubation) ERCP in patients with Roux en Y § Roux-en-Y mandates use of long scope – Colonoscope – push enteroscope – DBE – SBE § Challenge is in cannulation Courtesy of Simon K Lo Find correct lumen in J-J anastomsis See Bile, slow down!! Remember to tattoo! Courtesy of Simon K Lo DBE-ERCP § 129 DBE-ERCPs / 103 consecutive post-RYGB patients § 2 operators – Operator A (18 years of high-volume ERCP practice before acquiring DBE skill in 2004) – Operator B ( < 2 years' experience in DBE and ERCP) § DBE-ERCP success rates among patients with an intact papilla – Operator A's first (87.5 %) and last (92.9 %) 20 cases – Operator B (92.9 %) ( P = 1.00 for both) Kashani A…. Jamil LH Endosc Int Open.2018 Jul;6(7):E885-E891 EUS-guided gastrogastrostomy-assisted ERCP Bukhari M et al Gastrointest Endosc 2018 Sep;88(3):486-494 Esophageal Surgeries § Esophageal strictures post esophagectomy with gastric pull up (31.3%) § Diverticula or mal-alignment of the esophagus lumen can develop § If resistance to passage of a side-viewing scope, switch to a forward- viewing scope and assess path, dilated if necessary Briel JW et al J Am Coll Surg. 198:536-542 2004 Antireflux Surgeries § Nissen Fundoplication: A short and loose 360-degree wrap is created around the distal esophagus § Partial Fundoplication – Dor: A partial anterior fundoplication usually performed following a Heller myotomy. – Toupet: A posterior partial wrap is created by suturing the edges of the stomach to the anterior esophagus, leaving a space in between http://safesurgery.com.au/surgery/acid-reflux/ Antireflux Surgeries § Belsey Mark IV: A partial wrap is created through a thoracotomy by progressive invagination of the esophagus into the stomach § Collis Gastroplasty: Creates a tubular segment of http://clinicalgate.com/postsurgical-endoscopic-anatomy stomach in continuity to the esophagus, long enough to be encircled by a 360-degree fundoplication placed below the diaphragm § If patient has symptoms (dysphagia, nausea, vomiting, etc), consider a forward viewing scope first to evaluate http://slideplayer.com/slide/717028/ Gastric Surgeries § Billroth I § Billroth II § Gastric resection and Roux-en-Y § Total gastrectomy § Gastrojejunostomy without gastric resection Billroth I § Antrectomy and partial resection of the duodenal bulb § Major and Minor papilla are more proximal in the duodenum § Problems: – Short stomach (no antrum) – Poor scope anchor – Papilla at acute angle http://clinicalgate.com/postsurgical-endoscopic-anatomy/ § Solutions: – Long scoping – More scope rotation Billroth II § Partial gastrectomy, the duodenal stump is closed and a gastrojejunostomy is created § Antiperistaltic anastomosis: The afferent limb is attached to the lesser curvature § Isoperistaltic anastomosis: The afferent limb is attached to greater curvature. http://clinicalgate.com/postsurgic al-endoscopic-anatomy/ Billroth II § Antecolic reconstruction: The anastomosis is anterior to the transverse colon leading to a longer afferent limb § Retrocolic reconstruction: The anastomosis passes through the mesocolon creating a shorter afferent limb http://clinicalgate.com/postsur gical-endoscopic-anatomy/ Billroth II Isoperistaltic: Antiperistaltic: the opening the opening linked to the linked to the greater greater curvature curvature corresponds to corresponds to the afferent the efferent limb limb Courtesy of Simon K Lo, M.D. Identifying The Afferent Limb § Usually the stomal opening linked to the lesser curvature is more difficult to access with the endoscope because of the relative verticalization of the anastomosis § Bile may be seen coming predominantly from the afferent limb § Visible peristaltic waves advancing away from the endoscope suggest that you’re in the efferent limb Forward or Side Viewing Scope in BII? § Prospective randomized study of 45 patients in Korea – Side-viewing (22 patients): cannulation (68%), sphincterotomy (80%) – Forward-viewing (23 patients): cannulation (87%), sphincterotomy (83%) – Forward-viewing endoscopes were safer to use (4 jejunal perforations in side viewing scope) § Retrospective study of 185 Billroth II ERCP procedures – Failure rate was 34% – Perforation 6% Kim MH et al Endoscopy. 29:82-85 1997 Faylona JM et al Endoscopy. 31:546-549 1999 Tips For Using Side-Viewing Scope in BII § Enter the intended limb similar to the pylorus § Once the duodenoscope is into the afferent limb, orient the lumen to the 6 o’clock position § If you see 2 lumens, follow the lower one § Occasional gentle pressure by the staff maybe required § Use fluoroscopy: passage of the endoscope into the RUQ toward the liver or previous cholecystectomy clips suggests entry into the afferent limb § Sometimes its too far especially if antecolic reconstruction Papilla in BII § The ampulla is vertically inverted (upside down) in the endoscopic image § Wire-guided Billroth II papillotome § S-shaped tip § A rotatable sphincterotome Billroth II ERCP § Problems: § Solutions: – What scope – Forward or side viewing – Which lumen – Try either lumen (more likely the one on the left or the more difficult one!) – Entering lumen – Gentle please – Wrong lumen – Remember where you went, leave a wire with a forward viewing scope – Check fluoro for the path – Orientating papilla – Keep papilla at 12 o'clock – Cannulating papilla – Use special cannula Braun Modification BII § An anastomosis that connects the afferent and efferent limbs, usually 10-15 cm distal to the GJ § Three openings can be noted http://clinicalgate.com/postsurgical- endoscopic-anatomy/ Gastric Resection and Roux-en-Y § End to side gastrojejunostomy § Short blind stump and a long Roux limb (40-60 cm before the J-J anastomosis) § Usually requires longer endoscopes http://clinicalgate.com/postsurgical-endoscopic-anatomy/#bib37 Total Gastrectomy § Esophagojejunostomy § Downstream is a side-to-side or end-to-side jejunojejunostomy § Usually a side-viewing gastroscope can reach the ampulla § Position and
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