Abstract:
INTRODUCTION:Endoscopic ultrasound (EUS)-directed transgastric endoscopic retrograde cholangiopancreatography (EDGE) is a minimally invasive option for pancreaticobiliary access in patients with Roux-en-Y anatomy. The procedure involves creating a fistulous tract between the remnant stomach or jejunum and the bypassed stomach with the deployment of a lumen-apposing metal stent (LAMS), followed by the advancement of an endoscope through the LAMS to perform an ERCP or EUS. It is a technically challenging procedure, requiring skills in EUS, fluoroscopy, and LAMS deployment. The aim of this study was to determine the learning curve for EDGE. METHODS:Consecutive patients undergoing EDGE by a single operator were included from a prospective registry over 3 years. Demographics, procedure info, postprocedure follow-up data, and adverse events were collected. Nonlinear regression and cumulative sum analyses were conducted for the learning curve. Technical success was defined as the successful creation of the fistulous tract. Clinical success was defined as successful EUS or ERCP via the LAMS. RESULTS:Nineteen patients were included (21% male, mean age 58.7 y). Indication included symptomatic biliary stricture (n=6, 32%), choledocholithiasis (n=5, 26%), pancreatitis (n=3, 16%). Technical success was 100%. All patients had a 15 mm LAMS placed, 3 (16%) had cautery-enhanced LAMS. Clinical success was achieved in 18/19 (95%) patients. Fourteen patients had an ERCP, 1 patient had a EUS, and 3 patients had both. Adverse events included 2 cases of bleeding, 1 case of post-ERCP pancreatitis, and 1 jejunal perforation during duodenoscope insertion managed endoscopically.Median procedure time was 54.5 minutes (range: 31 to 88 min). Cumulative sum chart shows a 54-minute procedure time was achieved at the ninth procedure hence indicating efficiency. Apart from 2 outliers, the procedure duration further reduced with consequent procedures with the last 3 being under 40 minutes indicating that after 25 to 35 procedures a plateau may be reached indicating mastery (nonlinear regression P<0.0001). CONCLUSIONS:Endoscopists experienced in EDGE are expected to achieve a reduction in procedure time over successive cases, with efficiency reached 54.5 minutes and a learning rate of 9 cases. After 25 to 35 procedures, a plateau may be reached indicating mastery.
journal_name
J Clin Gastroenteroljournal_title
Journal of clinical gastroenterologyauthors
Tyberg A,Kedia P,Tawadros A,Tarnasky PR,Gaidhane M,Nieto J,Kahaleh Mdoi
10.1097/MCG.0000000000001326subject
Has Abstractpub_date
2020-07-01 00:00:00pages
569-572issue
6eissn
0192-0790issn
1539-2031journal_volume
54pub_type
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