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Keswani RN, Duloy A, Nieto JM, Panganamamula K, Murad MH, Bazerbachi F, Shaukat A, Elmunzer BJ, Day LW. Interventions to improve the performance of ERCP and EUS quality indicators. Gastrointest Endosc 2023; 97:825-838. [PMID: 36967249 DOI: 10.1016/j.gie.2022.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 12/11/2022] [Indexed: 04/21/2023]
Affiliation(s)
- Rajesh N Keswani
- Division of Gastroenterology, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Anna Duloy
- Division of Gastroenterology, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Jose M Nieto
- Digestive Disease Consultants, Jacksonville, Florida, USA
| | - Kashyap Panganamamula
- Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Penn Presbyterian Medical Center, Philadelphia, Pennsylvania, USA
| | - M Hassan Murad
- Division of Public Health, Infectious Diseases and Occupational Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Fateh Bazerbachi
- CentraCare, Interventional Endoscopy Program, St Cloud Hospital, St Cloud, Minnesota, USA
| | - Aasma Shaukat
- Division of Gastroenterology and Hepatology, NYU Grossman School of Medicine, New York, New York, USA
| | - B Joseph Elmunzer
- Division of Gastroenterology and Hepatology, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Lukejohn W Day
- Division of Gastroenterology, Department of Medicine, Zuckerberg San Francisco General Hospital and University of San Francisco, San Francisco, California, USA
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Steerable catheter based on wire-driven seamless artificial blood vessel tube for endoscopic retrograde transpapillary interventions. Int J Comput Assist Radiol Surg 2023; 18:433-447. [PMID: 36477583 DOI: 10.1007/s11548-022-02805-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 11/22/2022] [Indexed: 12/13/2022]
Abstract
PURPOSE Current steerable catheters (SCs) for endoscopic retrograde cholangiopancreatography (ERCP) have performance limitations caused by an asymmetric multiple-slit tube design with a small maximum bend angle, lesser curvatures, and insufficient durability. We propose a wire-driven SC for balanced bidirectional bending using artificial blood vessel material to overcome these limitations. We assess the SC prototype's steerability using phantom and animal models. METHODS The SC prototype employed a slit-less and multiple-lumen seamless tube with a polytetrafluoroethylene (PTFE) body with stretch-retractable porous expanded PTFE at the distal end, and loop-formed control wires. We evaluated the wire routing design using a static model. The bending performance was compared with conventional SCs. Feasibility studies were performed, including major duodenal papilla insertions and ductal branch selections in desktop phantoms and a mini-pig model. RESULTS The proposed design reduced the wire contact force by 48% compared to the single wire configuration. The maximum bend angle was 162°, almost twofold larger than that for conventional SCs. The lateral tip position in the bent shape was maximally 56% smaller. The tip flexibility was comparable to conventional SCs, and the insertion resistance was similar to the passive catheters. Phantom studies showed that the SC prototype could perform the large and protuberant papilla insertions and fine ductal branch selections without breaking; the animal study was completed successfully. CONCLUSION We propose a wire-driven SC design for ERCP using a multi-lumen seamless tube and two loop-formed control wires, different from the conventional SC design with a multiple-slit tube and single control wire. The SC prototype records balanced bidirectional bending with a maximum bending angle of ± 162° without breakage risk. The phantom and animal studies show that the prototype performance potentially facilitates papilla cannulations and intrahepatic ductal branch seeking.
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Abstract
Successful biliary cannulation of a native papilla is usually the rate-limiting step toward a successful ERCP. Standard cannulation techniques usually succeed, particularly when utilizing the wire-guided technique. There are, however, a myriad of confirmations of the major papilla as well as anatomic variants and certain pathologies which can make cannulation exceedingly difficult. For these cases, advanced cannulation techniques and techniques termed "access sphincterotomy" have been developed which should allow successful cannulation in >90% of cases. This article should help all those performing ERCP to improve their cannulation rate.
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Affiliation(s)
- Robert H Hawes
- Orlando Health Digestive Health Institute, 1335 Sligh Boulevard, 3rd Floor, Orlando, FL 33806, USA; Center for Advanced Endoscopy, Research and Education (CARE); University of Central Florida College of Medicine.
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Tse F, Liu J, Yuan Y, Moayyedi P, Leontiadis GI. Guidewire-assisted cannulation of the common bile duct for the prevention of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis. Cochrane Database Syst Rev 2022; 3:CD009662. [PMID: 35349163 PMCID: PMC8963249 DOI: 10.1002/14651858.cd009662.pub3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Cannulation techniques have been recognized as being important in causing post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). However, considerable controversy exists about the usefulness of the guidewire-assisted cannulation technique for the prevention of PEP. OBJECTIVES To assess the effectiveness and safety of the guidewire-assisted cannulation technique compared to the conventional contrast-assisted cannulation technique for the prevention of PEP in people undergoing diagnostic or therapeutic ERCP for biliary or pancreatic diseases. SEARCH METHODS For the previous version of this review, we searched CENTRAL (the Cochrane Library), MEDLINE, Embase, CINAHL and major conference proceedings, up to February 2012, with no language restrictions. An updated search was performed on 26 February 2021 for the current version of this review. Two clinical trial registries, clinicaltrials.gov and WHO ICTRP, were also searched in this update. SELECTION CRITERIA Randomized controlled trials (RCTs) comparing the guidewire-assisted cannulation technique versus the contrast-assisted cannulation technique in people undergoing ERCP. DATA COLLECTION AND ANALYSIS Two review authors conducted study selection, data extraction, and methodological quality assessment independently. Using intention-to-treat analysis with random-effects models, we combined dichotomous data to obtain risk ratios (RR) with 95% confidence intervals (CI). We assessed heterogeneity using the Chi² test (P < 0.10) and I² statistic (> 50%). To explore sources of heterogeneity, we conducted a priori subgroup analyses according to trial design, publication type, risk of bias, use of precut sphincterotomy, inadvertent guidewire insertion or contrast injection of the pancreatic duct (PD), use of a PD stent, cannulation device, and trainee involvement in cannulation. To assess the robustness of our results, we carried out sensitivity analyses using different summary statistics (RR versus odds ratio (OR)) and meta-analytic models (fixed-effect versus random-effects) and per-protocol analysis. MAIN RESULTS 15 RCTs comprising 4426 participants were included. There was moderate heterogeneity among trials for the outcome of PEP (P = 0.08, I² = 36%). Meta-analyses suggest that the guidewire-assisted cannulation technique probably reduces the risk of PEP compared to the contrast-assisted cannulation technique (RR 0.51, 95% CI 0.36 to 0.72, 15 studies, moderate-certainty evidence). In addition, the guidewire-assisted cannulation technique may result in an increase in primary cannulation success (RR 1.06, 95% CI 1.01 to 1.12, 13 studies, low-certainty evidence), and probably reduces the need for precut sphincterotomy (RR 0.79, 95% CI 0.64 to 0.96, 10 studies, moderate-certainty evidence). Compared to the contrast-assisted cannulation technique, the guidewire-assisted cannulation technique may result in little to no difference in the risk of post-sphincterotomy bleeding (RR 0.87, 95% CI 0.49 to 1.54, 7 studies, low-certainty evidence) and perforation (RR 0.93, 95% CI 0.11 to 8.23, 8 studies, very low-certainty evidence). Procedure-related mortality was reported by eight studies, and there were no cases of deaths in both arms (moderate-certainty evidence). Subgroup analyses suggest that the heterogeneity for the outcome of PEP could be explained by differences in trial design. The results were robust in sensitivity analyses. AUTHORS' CONCLUSIONS There is moderate-certainty evidence that the guidewire-assisted cannulation technique probably reduces the risk of PEP compared to the contrast-assisted cannulation technique. There is low-certainty evidence that the guidewire-assisted cannulation technique may result in an increase in primary cannulation success. There is low- and very low-certainty evidence that the guidewire-assisted cannulation technique may result in little to no difference in the risk of bleeding and perforation. No procedure-related deaths were reported. Therefore, the guidewire-assisted cannulation technique appears to be superior to the contrast-assisted cannulation technique considering the certainty of evidence and the balance of benefits and harms. However, the routine use of guidewires in biliary cannulation will be dependent on local expertise, availability, and cost. Future research should assess the effectiveness and safety of the guidewire-assisted cannulation technique in the context of other pharmacologic or non-pharmacologic interventions for the prevention of PEP.
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Affiliation(s)
- Frances Tse
- Department of Medicine, Division of Gastroenterology, McMaster University, Hamilton, Canada
- Farncombe Family Digestive Health Research Institute, Hamilton, Canada
| | - Jasmine Liu
- Department of Medicine, McMaster University, Hamilton, Canada
| | - Yuhong Yuan
- Department of Medicine, Division of Gastroenterology, McMaster University, Hamilton, Canada
| | - Paul Moayyedi
- Department of Medicine, Division of Gastroenterology, McMaster University, Hamilton, Canada
- Farncombe Family Digestive Health Research Institute, Hamilton, Canada
| | - Grigorios I Leontiadis
- Department of Medicine, Division of Gastroenterology, McMaster University, Hamilton, Canada
- Farncombe Family Digestive Health Research Institute, Hamilton, Canada
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Dietrich CF, Bekkali NL, Burmeister S, Dong Y, Everett SM, Hocke M, Ignee A, On W, Hebbar S, Oppong K, Sun S, Jenssen C, Braden B. Controversies in ERCP: Technical aspects. Endosc Ultrasound 2021; 11:27-37. [PMID: 34677144 PMCID: PMC8887038 DOI: 10.4103/eus-d-21-00102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The aim of the series of papers on controversies of biliopancreatic drainage procedures is to discuss pros and cons of the varying clinical practices and techniques in ERCP and EUS for drainage of biliary and pancreatic ducts. While the first part focuses on indications, clinical and imaging prerequisites prior to ERCP, sedation options, post-ERCP pancreatitis prophylaxis, and other related technical topics, the second part discusses specific procedural ERCP techniques including precut techniques and their timing as well as management algorithms. In addition, reviews on controversies in EUS-guided bile duct and pancreatic drainage procedures are under preparation.
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Affiliation(s)
- Christoph F Dietrich
- Department of Ultrasound, The First Affiliated Hospital of Zhengzhou University, China; Johann Wolfgang Goethe University, Frankfurt/Main, Germany; Department of Allgemeine Innere Medizin, Kliniken Hirslanden Beau Site, Salem und Permanence, Bern, Switzerland
| | - Noor L Bekkali
- Translational Gastroenterology Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Sean Burmeister
- Surgical Gastroenterology Unit, Groote Schuur Hospital, Cape Town, South Africa
| | - Yi Dong
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai, China
| | | | - Michael Hocke
- Medical Department, Helios Klinikum Meiningen, Germany
| | - Andre Ignee
- Medical Department 2, Caritas-Krankenhaus, Uhlandstr 7, D-97980 Bad Mergentheim, Germany
| | - Wei On
- Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom
| | - Srisha Hebbar
- University Hospitals of North Midlands, United Kingdom
| | - Kofi Oppong
- HPB Unit, Freeman Hospital, Newcastle upon Tyne, United Kingdom
| | - Siyu Sun
- Endoscopy Center, ShengJing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Christian Jenssen
- Krankenhaus Märkisch-Oderland, Department of Internal Medicine, Strausberg; Brandenburg Institute for Clinical Ultrasound (BICUS) at Medical University Brandenburg, Neuruppin, Germany
| | - Barbara Braden
- Translational Gastroenterology Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom; Johann Wolfgang Goethe University, Frankfurt/Main, Germany
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Pereira-Lima J, Arciniegas Sanmartin ID, Watte G, Contin I, Pereira-Lima G, Quadros Onófrio FD, Altmayer S, Oliveira Dos Santos CE. Biliary cannulation with contrast and guide-wire versus exclusive guide-wire: A prospective, randomized, double-blind trial. Pancreatology 2021; 21:459-465. [PMID: 33526383 DOI: 10.1016/j.pan.2020.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND The use of exclusive guide-wire cannulation (e-GW) instead of contrast injection reduces post-ERCP pancreatitis (PEP) and pre-cutting and increases cannulation rate. Herein, we intend to compare e-GW with the hybrid technique (GW-C and/or contrast injection). METHODS Prospective single-center randomized comparative study, which included all patients referred to ERCP to our unit. Patients with non-naïve papilla; previous ERCP; direct infundibulotomy, ampullectomy, Billroth II gastrectomy or pancreatic sphincterotomy and patients lost to follow up were excluded. RESULTS 727 consecutive patients were assessed. Of these, 588 naïve papilla patients were included and randomized to receive e-GW (n = 299) or GW-C (n = 289) for selective biliary cannulation. The mean age was 60.3 years and 60.5% were women. PEP occurred in 15(5%) cases in e-GW group and 9(3.1%) in the GW-C group (p = 0.29). Time to reach deep cannulation was faster in the latter group (75% < 5 min vs. 50.2% < 5 min, p<0.001). > 10 min until cannulation was observed in 21% vs. 10% of the ERCPs (groups e-GW and GW-C, respectively, p < 0.001). Total ERCP time was also shorter in the GW-C group (12 vs. 10 min; p < 0.001). Pre-cut (23.8 vs.11.8%, p < 0.001) and pancreatic sphincterotomy as a pre-cut technique (15.8 vs. 5.6%, p < 0.001) were used more frequently in the e-GW group. CONCLUSIONS Compared to exclusive G-W- assisted biliary cannulation, the hybrid technique did not significantly reduce the PEP rate, however it promoted faster cannulation and, consequently, reduced the total procedure time and the use of pre-cut techniques.
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Affiliation(s)
- Julio Pereira-Lima
- Department of Gastroenterology and Hepatology, Division of Endoscopy, Santa Casa Hospital, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil.
| | - Ivan David Arciniegas Sanmartin
- Department of Gastroenterology and Hepatology, Division of Endoscopy, Santa Casa Hospital, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - Guilherme Watte
- Department of Biostatistics and Epidemiology, Santa Casa Hospital and PUC, Porto Alegre, Brazil
| | - Isabela Contin
- Department of Gastroenterology and Hepatology, Division of Endoscopy, Santa Casa Hospital, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - Guilherme Pereira-Lima
- Department of Gastroenterology and Hepatology, Division of Endoscopy, Santa Casa Hospital, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | | | - Stephan Altmayer
- Department of Biostatistics and Epidemiology, Santa Casa Hospital and PUC, Porto Alegre, Brazil
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Impact of a Novel Oblique-Tip Papillotome for Biliary Cannulation during ERCP: A Nonrandomized Coarsened Exact Matching Study. Gastroenterol Res Pract 2020; 2020:2417841. [PMID: 32454813 PMCID: PMC7229551 DOI: 10.1155/2020/2417841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 04/24/2020] [Indexed: 01/08/2023] Open
Abstract
Background We developed a novel oblique-tip papillotome (OT-papillotome) to facilitate biliary cannulation during endoscopic retrograde cholangiopancreatography (ERCP). This study was performed to evaluate the utility of the OT-papillotome for contrast-guided cannulation (CGC) and wire-guided cannulation (WGC) during ERCP, compared with standard cannulation by WGC using a standard-tip papillotome (ST-papillotome). Methods A prospective study was performed at two centers. CGC with the OT-papillotome (OT-CGC group) was performed at Jikei University Hospital, while WGC was done with the OT-papillotome and ST-papillotome (OT-WGC and ST-WGC groups, respectively) at the University of Malaya Medical Centre. The results of the OT-CGC and OT-WGC groups were compared with those of the ST-WGC group after performing coarsened exact matching (CEM) to reduce bias due to nonrandomized and center-based patient allocation. Results Eighty patients were enrolled in each of the OT-CGC, OT-WGC, and ST-WGC groups. After CEM, the successful biliary cannulation rate was significantly higher in the OT-CGC and OT-WGC groups than in the ST-WGC group, while rescue cannulation was reduced. The mean number of unintended pancreatic access events in the OT-WGC and OT-CGC groups was similar to the ST-WGC group. However, it was significantly lower in the OT-WGC group than in the OT-CGC group. Multivariate analysis revealed that the OT-papillotome was independently associated with less frequent rescue cannulation and a higher successful biliary cannulation rate. Conclusions Although use of the OT-papillotome in biliary cannulation did not reduce unintended pancreatic access events or PEP compared to the ST-papillotome, the OT-papillotome increased the successful biliary cannulation rate, while reducing the frequency of rescue cannulation procedures. Combining the OT-papillotome with WGC might be the best cannulation technique for minimizing unintended pancreatic access.
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Søreide JA, Karlsen LN, Sandblom G, Enochsson L. Endoscopic retrograde cholangiopancreatography (ERCP): lessons learned from population-based national registries: a systematic review. Surg Endosc 2019; 33:1731-1748. [DOI: 10.1007/s00464-019-06734-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 03/06/2019] [Indexed: 02/07/2023]
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Adler DG. Guidewire cannulation in ERCP: from zero to hero! Gastrointest Endosc 2018; 87:202-204. [PMID: 29241850 DOI: 10.1016/j.gie.2017.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Douglas G Adler
- Department of Gastroenterology and Hepatology, University of Utah School of Medicine, Salt Lake City, Utah, USA
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Kitamura K, Yamamiya A, Ishii Y, Sato Y, Iwata T, Nomoto T, Ikegami A, Yoshida H. 0.025-inch vs 0.035-inch guide wires for wire-guided cannulation during endoscopic retrograde cholangiopancreatography: A randomized study. World J Gastroenterol 2015; 21:9182-9188. [PMID: 26290646 PMCID: PMC4533051 DOI: 10.3748/wjg.v21.i30.9182] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 02/25/2015] [Accepted: 04/30/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To compare the clinical outcomes between 0.025-inch and 0.035-inch guide wires (GWs) when used in wire-guided cannulation (WGC).
METHODS: A single center, randomized study was conducted between April 2011 and March 2013. This study was approved by the Medical Ethics Committee at our hospital. Informed, written consent was obtained from each patient prior to study enrollment. Three hundred and twenty-two patients with a naïve papilla of Vater who underwent endoscopic retrograde cholangiopancreatography (ERCP) for the purpose of selective bile duct cannulation with WGC were enrolled in this study. Fifty-three patients were excluded based on the exclusion criteria, and 269 patients were randomly allocated to two groups by a computer and analyzed: the 0.025-inch GW group (n = 109) and the 0.035-inch GW group (n = 160). The primary endpoint was the success rate of selective bile duct cannulation with WGC. Secondary endpoints were the success rates of the pancreatic GW technique and precutting, selective bile duct cannulation time, ERCP procedure time, the rate of pancreatic duct stent placement, the final success rate of selective bile duct cannulation, and the incidence of post-ERCP pancreatitis (PEP).
RESULTS: The primary success rates of selective bile duct cannulation with WGC were 80.7% (88/109) and 86.3% (138/160) for the 0.025-inch and the 0.035-inch groups, respectively (P = 0.226). There were no statistically significant differences in the success rates of selective bile duct cannulation using the pancreatic duct GW technique (46.7% vs 52.4% for the 0.025-inch and 0.035-inch groups, respectively; P = 0.884) or in the success rates of selective bile duct cannulation using precutting (66.7% vs 63.6% for the 0.025-inch and 0.035-inch groups, respectively; P = 0.893). The final success rates for selective bile duct cannulation using these procedures were 92.7% (101/109) and 97.5% (156/160) for the 0.025-inch and 0.035-inch groups, respectively (P = 0.113). There were no significant differences in selective bile duct cannulation time (median ± interquartile range: 3.7 ± 13.9 min vs 4.0 ± 11.2 min for the 0.025-inch and 0.035-inch groups, respectively; P = 0.851), ERCP procedure time (median ± interquartile range: 32 ± 29 min vs 30 ± 25 min for the 0.025-inch and 0.035-inch groups, respectively; P = 0.184) or in the rate of pancreatic duct stent placement (14.7% vs 15.6% for the 0.025-inch and 0.035-inch groups, respectively; P = 0.832). The incidence of PEP was 2.8% (3/109) and 2.5% (4/160) for the 0.025-inch and 0.035-inch groups, respectively (P = 0.793).
CONCLUSION: The thickness of the GW for WGC does not appear to affect either the success rate of selective bile duct cannulation or the incidence of PEP.
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Hatlani MA, Kortan P, May G, Ling SC, Walters T, Avitzur Y. Wire-guided cannulation versus contrast-guided cannulation in pediatric endoscopic retrograde cholangiopancreatography. Saudi J Gastroenterol 2015; 21:25-9. [PMID: 25672235 PMCID: PMC4355858 DOI: 10.4103/1319-3767.151219] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND/AIM Wire-guided cannulation (WGC) of the common bile duct may be associated with fewer complications and higher success rate compared with contrast-guided cannulation (CGC) in adults. Data in children are lacking. The aim of this study was to compare the successful cannulation and complication rate of WGC and CGC in pediatric endoscopic retrograde cholangiopancreatography (ERCP). PATIENTS AND METHODS We report a retrospective cohort study comparing WGC to CGC in a pediatric cohort. We reviewed the medical records of 167 children who underwent ERCP over a 10-year time period (CGC, 1999-2003, WGC, 2003-2009). Indications, findings, and success were analyzed. RESULTS A total of 93 patients (56%) underwent WGC and 74 (44%) CGC. Children in the WGC group were younger (9.5 ± 4.7 vs. 11.5 ± 4.6 years in CGC; P = 0.006) and underwent more therapeutic ERCP interventions (70% vs. 40% in CGC), whereas diagnostic ERCP was more common in the CGC group (60%; P < 0.005). The overall success (96%) and complication rate (8%) were identical in both groups but a trend toward a reduction in the complication rate over time was noted in the WGC group. Post-ERCP pancreatitis (PEP) was documented in one patient in the WGC group (1.1%) and three patients (4.2%) in the CGC group (P-NS). CONCLUSION The success and complication rate in both CGC and WGC are comparable in children but considering the patient and procedure complexity and the trend toward lower PEP in the WGC group, WGC may be the preferable cannulation technique for ERCP in children.
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Affiliation(s)
- Maher Al Hatlani
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Canada,Department of Pediatrics and KAIMRC, King Abdulaziz Medical City, Ministry of National Guard, Riyadh, Saudi Arabia,Address for correspondence: Dr. Maher Mohammed Al Hatlani, Division of Gastroenterology, Hepatology and Nutrition, King Abdulaziz Medical City, Ministry of National Guard, Prince Miteb Bin Abdulaziz Road, Riyadh 11426 P.O Box 22490, Saudi Arabia. E-mail:
| | - Paul Kortan
- Division of Gastroenterology, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | - Gary May
- Division of Gastroenterology, St. Michael's Hospital, University of Toronto, Toronto, Canada
| | - Simon C. Ling
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Canada
| | - Thomas Walters
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Canada
| | - Yaron Avitzur
- Division of Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Canada
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Song BJ, Kang DH. Prevention of postendoscopic retrograde cholangiopancreatography pancreatitis: the endoscopic technique. Clin Endosc 2014; 47:217-21. [PMID: 24944984 PMCID: PMC4058538 DOI: 10.5946/ce.2014.47.3.217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 04/24/2014] [Accepted: 04/24/2014] [Indexed: 12/25/2022] Open
Abstract
Pancreatitis is the most frequent and distressing complication of endoscopic retrograde cholangiopancreatography (ERCP). Many recent studies have reported the use of pharmacological agents to reduce post-ERCP pancreatitis (PEP); however, the most effective agents have not been established. Reduction in the incidence of PEP in high-risk patients has been reported through specific cannulation techniques such as guide wire-assisted cannulation and the use of pancreatic stents. The present review focuses on ERCP techniques for the prevention of PEP.
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Affiliation(s)
- Byeong Jun Song
- Department of Internal Medicine, Medical Research Institute, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Dae Hwan Kang
- Department of Internal Medicine, Medical Research Institute, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
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Abstract
Pancreatitis is one of the most common complications of endoscopic retrograde cholangiopancreatography (ERCP). A variety of patient-related and procedure-related factors have been identified to risk-stratify patients. Several measures can be undertaken in order to decrease the risk of post-ERCP pancreatitis in high-risk groups. These measures include pancreatic duct stenting and rectal indomethacin, amongst others.
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Affiliation(s)
- Jennifer Maranki
- Temple University School of Medicine, 3401 N. Broad St., Suite 830 Parkinson Pavilion, Philadelphia, PA, 19140, USA,
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Kobayashi G, Fujita N, Imaizumi K, Irisawa A, Suzuki M, Murakami A, Oana S, Makino N, Komatsuda T, Yoneyama K. Wire-guided biliary cannulation technique does not reduce the risk of post-ERCP pancreatitis: multicenter randomized controlled trial. Dig Endosc 2013; 25:295-302. [PMID: 23368891 DOI: 10.1111/j.1443-1661.2012.01372.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 07/20/2012] [Indexed: 12/11/2022]
Abstract
AIM To evaluate the effect of wire-guided biliary cannulation (WGC) on the prevention of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). METHODS We investigated the impact of the WGC technique on the incidence of PEP by comparing the conventional cannulation (CC) technique in selective bile duct cannulation during ERCP with a cross-over design in a prospective multicenter randomized controlled trial and the potential risk factors for PEP. This involved six tertiary referral centers and three university hospitals. A total of 322 patients with indications for ERCP requiring selective biliary cannulation were enrolled from April 2008 to March 2009. RESULTS One hundred and sixty-three patients were assigned to the WGC group and 159 to the CC group. The incidence of PEP was the same between the groups (6.1% vs 6.3%, P = 0.95). Primary successful biliary cannulation was achieved in 136 patients (83%) in the WGC group and in 138 (87%) in the CC group (P = 0.40). The mean time required for primary successful biliary cannulation was 7.4 ± 8.3 min and 7.2 ± 7.9 min, respectively (P = 0.83). Multivariate analysis demonstrated that accidental guidewire insertions and unintended injections of contrast into the main pancreatic duct were the only independent risk factors for PEP (P = 0.001, relative risk [RR]: 8.70, 95% confidence interval [CI]: 2.46-30.81). CONCLUSION The WGC technique does not reduce the risk of PEP and also does not improve the success rate of selective bile duct cannulation.
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Affiliation(s)
- Go Kobayashi
- Tohoku Bilio-pancreatic Interventional Endoscopy Group, Tohoku.
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Moon SH, Kim MH. Prophecy about post-endoscopic retrograde cholangiopancreatography pancreatitis: From divination to science. World J Gastroenterol 2013; 19:631-637. [PMID: 23429236 PMCID: PMC3574588 DOI: 10.3748/wjg.v19.i5.631] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 12/28/2012] [Accepted: 01/13/2013] [Indexed: 02/06/2023] Open
Abstract
One unresolved issue of endoscopic retrograde cholangiopancreatography (ERCP) is post-ERCP pancreatitis (PEP), which occurs in up to 40% of patients. Identification of risk factors for PEP is especially important in the field of ERCP practice because it may assist physicians in taking protective measures in situations with high risk. A decade ago, Freeman et al meticulously evaluated a large number of potentially relevant risk factors for PEP, which can be divided into patient-related and procedure-related issues. In this commentary, we summarize this classic article and reevaluate the risk factors for PEP from the current point of view. This is followed by assessment of strategies for prevention of PEP that can be divided into mechanical and pharmacologic methods.
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Anderson MA, Appalaneni V, Ben-Menachem T, Decker GA, Early DS, Evans JA, Fanelli RD, Fisher DA, Fisher LR, Fukami N, Hwang JH, Ikenberry SO, Jain R, Jue TL, Khan K, Krinsky ML, Malpas PM, Maple JT, Sharaf RN, Shergill AK, Dominitz JA, Cash BD. The role of endoscopy in the evaluation and treatment of patients with biliary neoplasia. Gastrointest Endosc 2013; 77:167-74. [PMID: 23219047 DOI: 10.1016/j.gie.2012.09.029] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 09/20/2012] [Indexed: 02/08/2023]
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A prospective randomized study of thin versus regular-sized guide wire in wire-guided cannulation. Surg Endosc 2012; 27:1662-7. [PMID: 23239304 DOI: 10.1007/s00464-012-2653-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 10/10/2012] [Indexed: 12/16/2022]
Abstract
BACKGROUND Endoscopic retrograde cholangiopancreatography (ERCP) is a valuable tool in the diagnosis and management of various pancreatobiliary disorders. Our aim was to evaluate whether the combination of a thin guide wire and a thin sphincterotome would facilitate selective cannulation of the bile duct and reduce the incidence of post-ERCP pancreatitis (PEP) by reducing papillary trauma when compared with a regular-sized hydrophilic guide wire. METHODS Between June 2011 and February 2012, we performed 100 biliary cannulations for a native papilla in a randomized controlled trial. Having given their written informed consent, patients were randomly assigned to a 0.025-inch guide wire and sphincterotome group (n = 50) or to a 0.035-inch guide wire and sphincterotome group (n = 50). Number of cannulation attempts, number of accidental guide wire passages into the pancreatic duct, secondary cannulation techniques after failed primary cannulation, time to change the technique, and time for successful cannulation were collected in a database. Patients were followed up after ERCP, and all post-ERCP complications were recorded. RESULTS Primary cannulation was successful in 80 %. With accessory techniques, cannulation of the biliary duct was achieved in every case except one. There was no difference in primary cannulation rate between the 0.025-inch and 0.035-inch wire groups (n = 40 in each group). PEP was diagnosed in two patients (2.0 %), one in each study group. Postsphincterotomy bleeding occurred in one patient (1.0 %). CONCLUSIONS The thickness of the hydrophilic guide wire does not appear to affect either the success rate of primary cannulation or the risk of complications.
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Tse F, Yuan Y, Moayyedi P, Leontiadis GI. Guidewire-assisted cannulation of the common bile duct for the prevention of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis. Cochrane Database Syst Rev 2012; 12:CD009662. [PMID: 23235679 PMCID: PMC6885057 DOI: 10.1002/14651858.cd009662.pub2] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Cannulation techniques have been recognized to be important in causing post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). However, considerable controversy exists about the usefulness of the guidewire-assisted cannulation technique for the prevention of PEP. OBJECTIVES To systematically review evidence from randomised controlled trials (RCTs) assessing the effectiveness and safety of the guidewire-assisted cannulation technique compared to the conventional contrast-assisted cannulation technique for the prevention of PEP. SEARCH METHODS We searched CENTRAL (The Cochrane Library), MEDLINE, EMBASE, and CINAHL databases and major conference proceedings, up to February 2012, using the Cochrane Upper Gastrointestinal and Pancreatic Diseases model with no language restrictions. SELECTION CRITERIA RCTs comparing the guidewire-assisted cannulation technique versus the contrast-assisted cannulation technique in patients undergoing ERCP. DATA COLLECTION AND ANALYSIS Two review authors conducted study selection, data extraction and methodological quality assessment independently. Using intention-to-treat analysis with random-effects models, we combined dichotomous data to obtain risk ratios (RR) with 95% confidence intervals (CI). We assessed heterogeneity using the Chi² test (P < 0.15) and I² statistic (> 25%). To explore sources of heterogeneity, we conducted a priori subgroup analyses according to trial design, publication type, risk of bias, use of precut sphincterotomy, inadvertent guidewire insertion or contrast injection of the pancreatic duct (PD), use of a PD stent, cannulation device, and trainee involvement in cannulation. To assess the robustness of our results we carried out sensitivity analyses using different summary statistics (RR versus odds ratio (OR)) and meta-analytic models (fixed-effect versus random-effects), and per protocol analysis. MAIN RESULTS Twelve RCTs comprising 3450 participants were included. There was statistical heterogeneity among trials for the outcome of PEP (P = 0.04, I² = 45%). The guidewire-assisted cannulation technique significantly reduced PEP compared to the contrast-assisted cannulation technique (RR 0.51, 95% CI 0.32 to 0.82). In addition, the guidewire-assisted cannulation technique was associated with greater primary cannulation success (RR 1.07, 95% CI 1.00 to 1.15), less precut sphincterotomy (RR 0.75, 95% CI 0.60 to 0.95), and no increase in other ERCP-related complications. Subgroup analyses indicated that this significant risk reduction in PEP with the guidewire-assisted cannulation technique existed only in 'non-crossover' trials (RR 0.22, 95% CI 0.12 to 0.42). The results were robust in sensitivity analyses. AUTHORS' CONCLUSIONS Compared with the contrast-assisted cannulation technique, the guidewire-assisted cannulation technique increases the primary cannulation rate and reduces the risk of PEP, and it appears to be the most appropriate first-line cannulation technique.
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Affiliation(s)
- Frances Tse
- Department of Medicine, Division of Gastroenterology, McMaster University, Hamilton, Canada.
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Abstract
PURPOSE OF REVIEW This article reviews the most recent literature with significant findings pertaining to the prevention of postendoscopic retrograde cholangiopancreatography (ERCP) pancreatitis. RECENT FINDINGS Despite several promising reports of pharmacologic agents that have demonstrated the efficacy for prophylaxis against post-ERCP pancreatitis such as nonsteroidal anti-inflammatory drugs and secretin, there are currently no universally accepted agents for use in high-risk patients. The greatest reductions in the incidence of post-ERCP pancreatitis in high-risk patients have been demonstrated through advancements in endoscopic techniques such as pancreatic duct stenting and dye-free guidewire cannulation. SUMMARY Pancreatitis requiring hospitalization is the most common complication of ERCP. Numerous pharmaceutical and procedure related interventions have been studied in attempts to prevent this complication; however, morbidity associated with ERCP remains significant. The most effective methods for preventing post-ERCP pancreatitis are careful patient selection and identification of risk factors prior to procedure.
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Affiliation(s)
- Matthew E Feurer
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah 84132, USA
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Anderson MA, Fisher L, Jain R, Evans JA, Appalaneni V, Ben-Menachem T, Cash BD, Decker GA, Early DS, Fanelli RD, Fisher DA, Fukami N, Hwang JH, Ikenberry SO, Jue TL, Khan KM, Krinsky ML, Malpas PM, Maple JT, Sharaf RN, Shergill AK, Dominitz JA. Complications of ERCP. Gastrointest Endosc 2012; 75:467-73. [PMID: 22341094 DOI: 10.1016/j.gie.2011.07.010] [Citation(s) in RCA: 281] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 07/11/2011] [Indexed: 12/11/2022]
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Mariani A, Giussani A, Di Leo M, Testoni S, Testoni PA. Guidewire biliary cannulation does not reduce post-ERCP pancreatitis compared with the contrast injection technique in low-risk and high-risk patients. Gastrointest Endosc 2012; 75:339-46. [PMID: 22075192 DOI: 10.1016/j.gie.2011.09.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 09/01/2011] [Indexed: 12/13/2022]
Abstract
BACKGROUND Guidewire (GW) cannulation can reduce the risk of post-ERCP pancreatitis (PEP) by avoiding the opacification of the main pancreatic duct. OBJECTIVE To compare the effects of conventional contrast ERCP and GW cannulation of the common bile duct on the rate of PEP in low- and high-risk patients. DESIGN Prospective, comparative-intervention single-center study. SETTING Tertiary referral center. PATIENTS Patients with biliary disease with an intact papilla were prospectively examined by ERCP. INTERVENTIONS Biliary cannulation using a sphincterotome with contrast injection (ConI) or a hydrophilic GW without contrast injection. MAIN OUTCOME MEASUREMENTS Pancreatitis rate in the GW group and the contrast injection (ConI) group. RESULTS PEP occurred in 60 of 1249 patients (4.8%), 35 of 678 (5.2%) in the GW group and 25 of 571 (4.4%) in the ConI group (not significant). The overall rate of PEP was significantly higher in high-risk patients (12.2%) than in low-risk patients (3.5%) (P < .001), but was similar for the 2 techniques within each of these 2 groups. In patients with unintended main pancreatic duct (MPD) cannulation or opacification, the rate of PEP was not significantly different with the GW (15.2%) and ConI (8.4%) techniques but was associated with a significantly higher rate of pancreatitis (11.9%) than in patients in whom the contrast medium or GW did not enter the MPD (3.5%) (P < .001). Multivariate analysis indicated that more than 10 papillary cannulation attempts, MPD cannulation or opacification, suspected sphincter of Oddi dysfunction, and precut methods were significant risk factors independently associated with PEP. LIMITATIONS Lack of randomization. CONCLUSIONS For selective cannulation of the CBD, the risk of inducing PEP is similar with the ConI and GW techniques in high-risk and low-risk patients. Any manipulation of the MPD must be considered a high-risk factor for PEP, such as multiple attempts on the papilla or use of the precut method.
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Affiliation(s)
- Alberto Mariani
- Division of Gastroenterology and Gastrointestinal Endoscopy, Vita-Salute San Raffaele University, Scientific Institute San Raffaele, Milan, Italy
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Imazu H, Ikeda K, Kakutani H, Sumiyama K, Kawamura M, Kanazawa K, Hino S, Ang TL, Omar S, Tajiri H. A pilot study of the novel offset-tip papillotome for selective biliary cannulation in ERCP. MINIM INVASIV THER 2011; 21:335-41. [PMID: 22098440 DOI: 10.3109/13645706.2011.635659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
INTRODUCTION We developed a new offset-tip papillotome to facilitate biliary cannulation and reduce the incidence of unintended contrast injection into the pancreatic duct during ERCP. The aim of the present retrospective cohort study was to evaluate the utility of the novel offset-tip papillotome in achievement of biliary cannulation, and prevention of unintended contrast injection into the pancreatic duct during ERCP, compared with a standard straight-tip catheter. MATERIAL AND METHODS Patients with native papilla who required biliary ERCP were retrospectively reviewed. Biliary ERCPs were performed by two experienced endoscopists using either the offset-tip papillotome or a standard catheter. Patients in whom ERCP involved fellows in training were excluded. RESULTS Eighty-five patients were included and divided into two cohorts: The offset-tip papillotome (OT; n = 40) and the standard straight-tip cohort (ST; n = 45). Biliary cannulation success rates in OT and ST cohort were 92.5% and 88.9%, respectively. The frequency of unintended contrast injection into the pancreatic duct and time to biliary cannulation of the OT cohort during biliary cannulation were significantly less than those of the ST cohort (0.56 vs. 1.65 times and 103.3 vs. 287.9 seconds). CONCLUSION The novel offset-tip papillotome could reduce the incidence of unintended contrast injection into the pancreatic duct and the time to biliary cannulation.
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Affiliation(s)
- Hiroo Imazu
- Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan.
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Park DH. Wire-guided cannulation for endoscopic retrograde cholangiopancreatography: now is the time to teach trainees a standardized technique. J Gastroenterol Hepatol 2011; 26:1470-2. [PMID: 21950743 DOI: 10.1111/j.1440-1746.2011.06856.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Nambu T, Ukita T, Shigoka H, Omuta S, Maetani I. Wire-guided selective cannulation of the bile duct with a sphincterotome: a prospective randomized comparative study with the standard method. Scand J Gastroenterol 2011; 46:109-15. [PMID: 20923377 DOI: 10.3109/00365521.2010.521889] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Wire-guided cannulation (WGC) is expected to reduce the incidence of post-ERCP pancreatitis (PEP). Our aim was to compare the incidence of PEP and the success rate of deep biliary cannulation using WGC or the standard cannulation method with contrast injection (STD). MATERIAL AND METHODS A total of 172 cases with an intact papilla were randomized into the STD group (n = 86) and the WGC group (n = 86). First a trainee endoscopist attempted the cannulation and if it was not successful, an expert endoscopist tried. When the cannulation was not successful within 10 min, the other method was conducted as a second attempt. The primary endpoint was the incidence of PEP and the secondary endpoint was the success rate of selective cannulation. RESULTS In successful cases, PEP occurred in 6.5% in the STD group and 3.0% in the WGC group in the first attempt. Overall rate of PEP was 6.0% (3, mild; 1, moderate and 1, severe) in the STD group and 2.3% (2, mild) in the WGC group, which were not significantly different. Selective cannulation rate in the first attempt was 73.8% in the STD group and 77.9% in the WGC group. After a crossover, the cannulation was successful in the second attempt in 36.4% and 42.1% and finally in 95.2% and 100% by the STD and WGC method, respectively. CONCLUSIONS The incidence of PEP tended to be lower in the WGC method compared to the STD method. In addition, all cases of pancreatitis in the WGC group were mild. The success rate of cannulation was comparable between two groups.
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Affiliation(s)
- Tomoko Nambu
- Division of Gastroenterology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo, Japan.
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Qayed E, Reid AL, Willingham FF, Keilin S, Cai Q. Advances in endoscopic retrograde cholangiopancreatography cannulation. World J Gastrointest Endosc 2010; 2:130-7. [PMID: 21160728 PMCID: PMC2998904 DOI: 10.4253/wjge.v2.i4.130] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 04/01/2010] [Accepted: 04/08/2010] [Indexed: 02/05/2023] Open
Abstract
Endoscopic retrograde cholangiopancreatography is an important tool in the diagnosis and treatment of pancreatobiliary diseases. A critical step in this procedure is deep cannulation of the bile duct as failure of cannulation generally results in an aborted procedure and failed intervention. Expert endoscopists usually achieve a high rate of successful cannulation while those less experienced typically have a much lower rate and a greater incidence of complications. Prolonged attempts at cannulation can result in significant morbidity to patients, anxiety for endoscopists, unnecessary radiation exposure and inefficient patient care. Here we review the most common endoscopic techniques used to achieve selective biliary cannulation. Pharmacologic aids to cannulation are also discussed briefly in this review.
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Affiliation(s)
- Emad Qayed
- Emad Qayed, Ashley L Reid, Field F Willingham, Steve Keilin, Qiang Cai, Division of Digestive Diseases, Emory University School of Medicine, Atlanta, GA 30322, United States
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