Risk factors for complications after performance of ERCP

Needle-knife fistulotomy in patients with periampullary diverticula and difficult bile duct cannulation

BACKGROUND AND AIM

Needle-knife fistulotomy has commonly been used for overcoming difficult bile duct cannulation. Periampullary diverticula (PAD) can be an impediment to endoscopic retrograde cholangiopancreatography (ERCP) procedures. There are little data on needle-knife fistulotomy in patients with PAD. We evaluated the efficacy and safety of needle-knife fistulotomy between patients with and without PAD.

METHODS

  Data from December 2005 to October 2010 were reviewed. Patients who underwent needle-knife fistulotomy were divided into the group with PAD and the group without PAD (control group). The technical success and complications were compared.

RESULTS

A total of 3012 ERCP cases were analyzed. Needle-knife fistulotomy was performed in 154 out of 3012 cases (5.1%) with 138 of these patients (89.6%) experiencing successful bile duct cannulation. The overall cannulation success rate was not significantly different between PAD group (n=33) and control group (n =121) (93.9% vs 88.4%; P=0.523). There was no significant difference in pancreatitis, bleeding and perforation between the two groups.

CONCLUSIONS

  Needle-knife fistulotomy can be performed effectively and safely in patients with periampullary diverticula and difficult bile duct cannulation.

[Endoscopic retrograde cholangiopancreatography at a regional hospital of the Instituto Mexicano del Seguro Social, 2002-2011: risk factors and complications]

BACKGROUND

Endoscopic retrograde cholangiopancreatography (ERCP) is a valuable study in the approach to diseases of the biliary and pancreatic ducts. It was first used for diagnostic purposes, but today its use is mainly therapeutic. It can present a variety of complications.

AIMS

To determine the frequency of complications and the risk factors associated with ERCP.

MATERIAL AND METHODS

A prolective study was carried out to analyze ERCP that was performed on 1.145 patients over a 10-year period of time (2.002-2.011). Complications were determined at the time of the procedure, through the personal communication of relatives, and/or when the patient was admitted to the emergency room. Follow-up was carried out for one month after ERCP in the out-patient service of the Department of Gastroenterology. Complications were evaluated with a multiple logistic regression model.

RESULTS

The sample included 1.145 patients. Mean age was 55,3 years (SD=18,7; CI 95%: 54,2-56,3). Women made up 60,5% (n=693) of the study participants. Therapeutic endoscopy was performed in 51,0% of the total number of procedures. Complications presented in 2,1% (n=24) of the patients; the most frequent was hemorrhage (n=14, 1,2%), followed by acute pancreatitis (n=6, 0,5%), respiratory distress (n=3, 0,3%), and cholangitis (n=1, 0,1%). There was a 1,4 times higher complication risk in patients that underwent precut/sphincterotomy, adjusted by age (CI 95%: OR 1,02-5,43; p=0,045).

CONCLUSIONS

This study shows a complication frequency similar to that published by other authors. However, this figure could be further reduced if ERCP were performed only for therapeutic purposes by highly qualified endoscopy physicians.

Prevention and management of post-endoscopic retrograde cholangiopancreatography complications

Endoscopic retrograde cholangiopancreatography (ERCP) is associated with a spectrum of complications such as pancreatitis, hemorrhage, perforation, and cardiopulmonary events. These complications can range from mild to severe resulting in extended hospitalization, requiring surgical intervention, and leading to permanent disability or even death. Complications of ERCP have been better understood in the past decade, with adoption of standardized consensus-based definitions of complications and introduction of new recommendations to minimize risks of ERCP. Adequate selection of patients undergoing ERCP, skilled operators using novel techniques and prompt identification and treatment are key to successful prevention and management.

Low-dose rectal diclofenac for prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis: a randomized controlled trial

BACKGROUND

Acute pancreatitis is a common complication of endoscopic retrograde cholangiopancreatography (ERCP). Rectal nonsteroidal anti-inflammatory drugs (specifically, 100 mg of diclofenac or indomethacin) have shown promising prophylactic activity in post-ERCP pancreatitis (PEP). However, the 100-mg dose is higher than that ordinarily used in Japan.

METHODS

We performed a prospective randomized controlled study to evaluate the efficacy of low-dose rectal diclofenac for the prevention of PEP. Patients who were scheduled to undergo ERCP were randomized to receive a saline infusion either with 50 mg of rectal diclofenac (diclofenac group) or without (control group) 30 min before ERCP. The dose of diclofenac was reduced to 25 mg in patients weighing <50 kg. The primary outcome measure was the occurrence of PEP.

RESULTS

Enrollment was terminated early because the planned interim analysis found a statistically significant intergroup difference in the occurrence of PEP. A total of 104 patients were eligible for this study; 51 patients received rectal diclofenac. Twelve patients (11.5%) developed PEP: 3.9% (2/51) in the diclofenac group and 18.9% (10/53) in the control group (p = 0.017). After ERCP, the incidence of hyperamylasemia was not significantly different between the two groups. Post-ERCP pain was significantly more frequent in the control group than in the diclofenac group (37.7 vs. 7.8%, respectively; p < 0.001). There were no adverse events related to diclofenac.

CONCLUSIONS

Low-dose rectal diclofenac can prevent PEP.

ERCP procedures in a Finnish community hospital: a retrospective analysis of 1207 cases

BACKGROUND AND AIMS

Endoscopic retrograde cholangiopancreatography (ERCP) is a procedure with a risk of serious and life-threatening complications. The most common complications are pancreatitis, haemorrhage, perforation and cholangitis. The aim of this study was to determine indications, success rates and complications in a low-volume ERCP unit in Kanta-Häme Central Hospital (KHCH).

MATERIAL AND METHODS

Data on 1207 consecutive ERCPs performed in KHCH between 2002 and 2009 was collected retrospectively from patient histories. Complications were classified according to need for intervention and length of hospitalisation.

RESULTS

Cannulation of the desired duct was successful in 89.2% of 825 ERCPs with no earlier sphincterotomy. Complete stone removal was achieved in 91.3% of procedures. Standard biliary sphincterotomy was performed in 73.8% and precut sphincterotomy in 12.0 % of cases. Cholangitis developed in 2.1%, bleeding in 1.9%, pancreatitis in 1.9%, perforation in 1.0% and cardio-pulmonary or miscellaneous complications in 4.2% of cases. The majority of complications could be managed conservatively. In procedures with no earlier sphincterotomy ERCP-related 30-day mortality was 0.2% (n=2) and overall 30-day mortality was 3.3% (n=27).

CONCLUSIONS

ERCP indications and success rates, as well as morbidity and mortality were comparable to those re-ported earlier. Although the success rate of cannulation and thereby ERCP procedures seem to be somewhat lower than in tertiary referral centres, ERCP procedures can be safely performed in a low-volume ERCP unit by concentrating procedures on a few experienced endoscopists. The success rates may be further improved with the latest cannulation techniques, used selectively in the last years of the study period.

Complications of endoscopic retrograde cholangiopancreatography: avoidance and management

Endoscopic retrograde cholangiopancreatography (ERCP) is now almost exclusively a therapeutic modality for pancreatic as well as biliary disorders. ERCP alone or with associated pancreatic and biliary therapy can cause a spectrum of mild and severe complications, including pancreatitis, hemorrhage, perforation, and cardiopulmonary events. Understanding of complications of ERCP has progressed substantially in the past decade, including widespread adoption of standardized consensus-based definitions of complications, large multicenter multivariate studies that have permitted clearer understanding of patient and technique-related risk factors for complications, and introduction of new technical approaches to minimize risks of ERCP.

Oral magnesium prevents the development of pancreatitis and hyperamylasemia in patients after ERCP

AIM: To investigate the effect of oral magnesium on the development of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP) and hyperamylasemia.

METHODS: One hundred and twenty patients with cholelithiasis were randomly divided into two groups: magnesium group (n = 60), in which 50% magnesium was given 30 min before ERCP, and control group (n = 60), in which no magnesium was given. Serum levels of amylase were measured in all the patients before ERCP and at 3 and 24 h after ERCP. The incidences of hyperamylasemia and PEP were also observed.

RESULTS: Serum levels of amylase did not differ significantly before ERCP between the two groups (P > 0.05), but were higher in both groups at 3 and 24 h after ERCP than before ERCP, and were lower in the magnesium group than in the control group at 3 and 24 h after ERCP. The incidences of hyperamylasemia and PEP in magnesium group were significantly lower than those in the control group (both P < 0.05).

CONCLUSION: Oral magnesium may decrease serum levels of amylase and prevent the occurrence of PEP and hyperamylasemia in patients after ERCP.

Unusual penetration of plastic biliary stent in a large ampullary carcinoma: A case report

Endoscopic biliary stenting is a well-established treatment of choice for many obstructive biliary disorders. Commonly used plastic endoprostheses have a higher risk of clogging and dislocation. Distal stent migration is an infrequent complication. Duodenum is the most common site of a migrated biliary stent. Intestinal perforation can occur during the initial insertion or endoscopic or percutaneous manipulation, or as a late consequence of stent placement. A 52-year-old male who presented with obstructive jaundice underwent endoscopic retrograde cholangiopancreatography (ERCP) with plastic stent placement. However, jaundice did not improve and he then underwent ERCP which revealed the plastic stent penetrating the ampullary tumor into the duodenal wall causing malfunction of the stent. A new plastic stent was inserted and the patient underwent Whipple's operation. He is currently doing well after the operation.

Sedative techniques for endoscopic retrograde cholangiopancreatography

BACKGROUND

Endoscopic retrograde cholangiopancreatography (ERCP) is an uncomfortable therapeutic procedure that cannot be performed without adequate sedation or general anaesthesia. A considerable number of ERCPs are performed annually in the UK (at least 48,000) and many more worldwide.

OBJECTIVES

The primary objective of our review was to evaluate and compare the efficacy and safety of sedative or anaesthetic techniques used to facilitate the procedure of ERCP in adult (age > 18 years) patients.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2010, Issue 8); MEDLINE (1950 to September 2011); EMBASE (1950 to September 2011); CINAHL, Web of Science and LILACS (all to September 2011). We searched for additional studies drawn from reference lists of retrieved trial materials and review articles and conference proceedings.

SELECTION CRITERIA

We considered all randomized or quasi-randomized controlled studies where the main procedures performed were ERCPs. The three interventions we searched for were (1) conscious sedation (using midazolam plus opioid) versus deep sedation (using propofol); (2) conscious sedation versus general anaesthesia; and (3) deep sedation versus general anaesthesia. We considered all studies regardless of which healthcare professional administered the sedation.

DATA COLLECTION AND ANALYSIS

We reviewed 124 papers and identified four randomized trials (with a total of 510 participants) that compared the use of conscious sedation using midazolam and meperidine with deep sedation using propofol in patients undergoing ERCP procedures. All sedation was administered by non-anaesthetic personnel. Due to the clinical heterogeneity of the studies we decided to review the papers from a narrative perspective as opposed to a full meta-analysis. Our primary outcome measures included mortality, major complications and inability to complete the procedure due to sedation-related problems. Secondary outcomes encompassed sedation efficacy and recovery.

MAIN RESULTS

No immediate mortality was reported. There was no significant difference in serious cardio-respiratory complications suffered by patients in either sedation group. Failure to complete the procedure due to sedation-related problems was reported in one study. Three studies found faster and better recovery in patients receiving propofol for their ERCP procedures. Study protocols regarding use of supplemental oxygen, intravenous fluid administration and capnography monitoring varied considerably. The studies showed either moderate or high risk of bias.

AUTHORS' CONCLUSIONS

Results from individual studies suggested that patients have a better recovery profile after propofol sedation for ERCP procedures than after midazolam and meperidine sedation. As there was no difference between the two sedation techniques as regards safety, propofol sedation is probably preferred for patients undergoing ERCP procedures. However, in all of the studies that were identified only non-anaesthesia personnel were involved in administering the sedation. It would be helpful if further research was conducted where anaesthesia personnel were involved in the administration of sedation for ERCP procedures. This would clarify the extent to which anaesthesia personnel should be involved in the administration of propofol sedation.

Sedative techniques for endoscopic retrograde cholangiopancreatography

BACKGROUND

Endoscopic retrograde cholangiopancreatography (ERCP) is an uncomfortable therapeutic procedure that cannot be performed without adequate sedation or general anaesthesia. A considerable number of ERCPs are performed annually in the UK (at least 48,000) and many more worldwide.

OBJECTIVES

The primary objective of our review was to evaluate and compare the efficacy and safety of sedative or anaesthetic techniques used to facilitate the procedure of ERCP in adult (age > 18 years) patients.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2010, Issue 8); MEDLINE (1950 to September 2011); EMBASE (1950 to September 2011); CINAHL, Web of Science and LILACS (all to September 2011). We searched for additional studies drawn from reference lists of retrieved trial materials and review articles and conference proceedings.

SELECTION CRITERIA

We considered all randomized or quasi-randomized controlled studies where the main procedures performed were ERCPs. The three interventions we searched for were (1) conscious sedation (using midazolam plus opioid) versus deep sedation (using propofol); (2) conscious sedation versus general anaesthesia; and (3) deep sedation versus general anaesthesia. We considered all studies regardless of which healthcare professional administered the sedation.

DATA COLLECTION AND ANALYSIS

We reviewed 124 papers and identified four randomized trials (with a total of 510 participants) that compared the use of conscious sedation using midazolam and meperidine with deep sedation using propofol in patients undergoing ERCP procedures. All sedation was administered by non-anaesthetic personnel. Due to the clinical heterogeneity of the studies we decided to review the papers from a narrative perspective as opposed to a full meta-analysis. Our primary outcome measures included mortality, major complications and inability to complete the procedure due to sedation-related problems. Secondary outcomes encompassed sedation efficacy and recovery.

MAIN RESULTS

No immediate mortality was reported. There was no significant difference in serious cardio-respiratory complications suffered by patients in either sedation group. Failure to complete the procedure due to sedation-related problems was reported in one study. Three studies found faster and better recovery in patients receiving propofol for their ERCP procedures. Study protocols regarding use of supplemental oxygen, intravenous fluid administration and capnography monitoring varied considerably. The studies showed either moderate or high risk of bias.

AUTHORS' CONCLUSIONS

Results from individual studies suggested that patients have a better recovery profile after propofol sedation for ERCP procedures than after midazolam and meperidine sedation. As there was no difference between the two sedation techniques as regards safety, propofol sedation is probably preferred for patients undergoing ERCP procedures. However, in all of the studies that were identified only non-anaesthesia personnel were involved in administering the sedation. It would be helpful if further research was conducted where anaesthesia personnel were involved in the administration of sedation for ERCP procedures. This would clarify the extent to which anaesthesia personnel should be involved in the administration of propofol sedation.

Post-ERCP pancreatitis: review of current preventive strategies

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.

[The effect of periampullary diverticulum on the outcome of bile duct stone treatment with endoscopic papillary large balloon dilation]

BACKGROUND/AIMS

Periampullary diverticulum (PAD) causes difficulty in the extraction of common bile duct (CBD) stones with conventional endoscopic therapy. Our study was designed to evaluate the effect of PAD on endoscopic large balloon dilation (EPLBD) with/without limited endoscopic sphincterotomy (EST) for CBD stone treatment.

METHODS

We retrospectively reviewed cases of 141 patients treated CBD stones by EPLBD with/without limited EST at Gachon Gil Medical Center from September 2008 to February 2010. PAD were classified into three groups according to the location of the papilla and diverticulum. Clinical parameters, endoscopic parameters, and procedure outcomes were analyzed.

RESULTS

PAD were identified in 46.1% (65/141), with 23 male (35.4%) and 42 female (64.6%) and a mean age of 72.9±11.1 years. Mean diameter of the stones was 14.8±6.0 mm and mean diameter of CBD was 21.6±7.7 mm. PAD group was significantly older than control group (72.9 vs. 68.6, p=0.043) and the incidence of large stone (≥15 mm) was higher in PAD group (60.0% vs. 42.1%, p=0.034). Success rate of complete removal of stones in the first session was 32/65 patients (49.2%) and overall successful complete stone removal rates was 63/65 (96.9%). There was no significant difference between the PAD and control groups in success rate. Major complications were similar between two groups.

CONCLUSIONS

PAD is associated with an increased incidence of large bile duct stones and older age. PAD seems to not increase technical failure rate or complication risk on EPLBD with/without limited EST.

Endoscopic complications--avoidance and management

The frequency of endoscopic complications is likely to rise owing to the increased number of indications for therapeutic procedures and also to the increased complexity of endoscopic techniques. Informed patient consent should be obtained as part of the procedure. Prevention of endoscopic adverse events is based on knowledge of the relevant risk factors and their mechanisms of occurrence. Thus, suitable training of future gastroenterologists and endoscopists is required for these complex procedures. When facing a complication, appropriate management is generally provided by an early diagnosis followed by prompt therapeutic care tailored to the situation. The most common complications of diagnostic and therapeutic upper gastrointestinal endoscopy, retrograde cholangiopancreatography, small bowel endoscopy and colonoscopy are reviewed here. Different modalities of medical, endoscopic or surgical management are also considered.

Guidewire biliary cannulation does not reduce post-ERCP pancreatitis compared with the contrast injection technique in low-risk and high-risk patients

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.

[A single institution's experience of endoscopic retrograde cholangiopancreaticography in the eldery patients: outcomes, safety and complications]

BACKGROUND/AIMS

As the population ages, endoscopic retrograde cholangiopancreaticography (ERCP) is being used increasingly as a diagnostic and therapeutic tool for elderly patients with pancreatobiliary disease. The aim of this study was to assess the outcomes, safety and complications associated with ERCP performed in the elderly patients.

METHODS

We retrospectively reviewed the medical record of 596 patients who were 50 years of age or older and underwent ERCP from January 2005 to September 2010. The patients were classified into two groups according to the age: non-elderly, 50-74 years old and elderly, ≥75 years old. Comparisons were made between two groups.

RESULTS

Five hundred and ninety-six patients (132 elderly and 464 non-elderly patients) were enrolled. The success rate of ERCP was 89.4% in the elderly and 91.9% in the non-elderly. The major complications were occurred in 11 patients of the elderly and 16 of the non-elderly, and the complication rate was significantly higher in the elderly compared to the non-elderly (8.3% vs. 3.4%, p=0.011). Pancreatitis occurred in 2 elderly patients and 10 non-elderly patients (1.5% vs. 2.1%, p=1.0). There was a higher rate of bleeding in the elderly patients (4.5% vs. 1.3%, p=0.01).

CONCLUSIONS

ERCP is effective and safe even in elderly patients. Outcomes of diagnostic and therapeutic ERCP in the elderly patients were similar to those in non-elderly patients. Elderly patients undergoing ERCP carried similar risk of pancreatitis but a higher risk of bleeding and perforation compared to non-elderly patients.

Comorbidities, sphincterotomy, and balloon dilation predict post-ERCP adverse events in PSC patients: operator experience is protective

BACKGROUND

Primary sclerosing cholangitis (PSC) is a chronic cholestatic disease. Interventional ERCP improves survival in PSC patients.

AIMS

To describe the frequency and risk factors for post-ERCP adverse events in patients with PSC via multivariate analysis.

METHODS

Retrospective cohort study included patients with a diagnosis of PSC who underwent ERCP at academic institutions between February 2000 and October 2009. Demographis, co-morbid conditions, antibiotic use, cannulation method, ERCP maneuvers and 30-day post-ERCP adverse events were collected. Multivariate analysis was performed using logistic regression.

RESULTS

A total of 185 procedures were performed on 75 PSC patients (58 M,17 F). Seven endoscopists performed ERCPs. Comorbidies included ulcerative colitis (44%, n = 33), Crohn's disease (12%, n = 9 patients), Cirrhosis (8%, n = 6 patients) and autoimmune hepatitis (2.7%, n = 2). Cannulation was achieved using dye-free guidewire cannulation techniques in 139/185 procedures (76%) and with contrast-based techniques in 46/185 procedures (24%). Thirty-day post-ERCP adverse events included post-ERCP pancreatitis (5%, n = 9, cholangitis (1%, n = 2), acute cholecystitis (0.5%, n = 1), stent occlusion (0.5%, n = 1), stent migration (0.5%, n = 1), and bile leak (0.5%, n = 1). In the multivariate analysis, associations with specific endoscopists who performed the procedure (P = 0.01), biliary dilation (P = 0.02), sphincterotomy (P = 0.03), presence of cirrhosis (P = 0.05), Crohn's disease (P < 0.001), and autoimmune hepatitis (P < 0.001) significantly predicted a complication following ERCP. Gender, stenting during procedure, presence of a dominant stricture, and cholangitis were not predictive for post-ERCP adverse events.

CONCLUSIONS

Factors predicting 30-day post-ERCP adverse events included certain co-morbid conditions, the endoscopist ERCP volume, maneuvers during ERCP including dilation and sphincterotomy. Stenting was not associated with adverse events.

Female gender and post-ERCP pancreatitis: is the association caused by difficult cannulation?

OBJECTIVE

Female gender is a well-known risk factor for the development of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis, but the underlying mechanism for this increased risk has remained unknown. We hypothesize that cannulation difficulty might play a part in this association. The aim of the current study was to determine whether the female papilla is more difficult to cannulate than the male papilla.

MATERIAL AND METHODS

Prospective data collection with emphasis on cannulation was conducted in 364 consecutive biliary ERCP procedures performed by very experienced ERCP endoscopists through native papilla in a tertiary referral university hospital.

RESULTS

Although the cannulation times seemed to be longer and alternative cannulation techniques seemed to be needed more frequently for successful cannulation in female than male patients, no statistically significant differences (p = 0.061 and 0.054, respectively) in the cannulation process could be found between the genders.

CONCLUSIONS

The study was not able to confirm that the cannulation of the female papilla is more troublesome than the cannulation of the male papilla.

Sphincter of Oddi disorder: what is the clinical issue?

Sphincter of Oddi disorder (SOD) is a functional disorder of the sphincter of Oddi (SO) and is pathophysiologically equivalent to functional gastrointestinal disorder (FGID) of the digestive tract. SOD is important as a cause of biliary pain of unknown origin and idiopathic acute recurrent pancreatitis; however, the concept of SOD has not generally spread in the same way as FGID. SOD is diagnosed using ROME III criteria which were revised in 2006 to reduce the number of unnecessary and potentially risky procedures. Many cases of SOD still need SO manometry (SOM) which is performed during endoscopic retrograde cholangiopancreatography (ERCP). It is problematic that SOD patients, who already have a high risk of post-ERCP pancreatitis, require SOM for a definitive diagnosis. SOM is an invasive examination that is accompanied by a high risk of post-procedure pancreatitis and can be performed only at a limited number of institutions because of technical difficulties. In the treatment of SOD, the effectiveness of the drugs is uncertain, and the role of drug therapy in the management of SOD has not yet been established. In recent years, endoscopic sphincterotomy (EST) has been recognized as standard treatment for SOD; however, the effect of EST is not yet clear. The development of less invasive diagnostic techniques is desirable in the future. Furthermore, patient eligibility criteria for EST and the long-term prognosis after EST should be clarified.

Endoscopic pancreatic duct stents reduce the incidence of post-endoscopic retrograde cholangiopancreatography pancreatitis in high-risk patients

BACKGROUND & AIMS

Pancreatitis is the most common and potentially serious complication of post-endoscopic retrograde cholangiopancreatography (ERCP). Post-ERCP pancreatitis (PEP) is caused mostly by postprocedural papillary edema and retention of pancreatic juice. We conducted a randomized controlled trial to determine whether placement of a temporary-type, pancreatic duct stent prevents PEP and to identify risk factors for PEP.

METHODS

We analyzed data from 426 consecutive patients who underwent ERCP-related procedures at 37 endoscopic units. The patients were assigned randomly to groups that received stents (S group, n = 213) or did not (nS group, n = 213). The stent used was temporary, 5F in diameter, 3 cm long, and straight with an unflanged inner end.

RESULTS

The overall frequency of PEP was 11.3%. The frequencies of PEP in the S and nS groups were 7.9% and 15.2%, respectively; the lower incidence of PEP in the S group was statistically significant based on the full analysis set (P = .021), although there was no statistically significant differences in an intention-to-treat analysis (P = .076). There were significant differences in PEP incidence between groups in multivariate analysis for the following risk factors: pancreatography first, nonplacement of a pancreatic duct stent after ERCP, procedure time of 30 minutes or more, sampling of pancreatic tissue by any method, intraductal ultrasonography, and difficulty of cannulation (≥15 min). Patients with more than 3 risk factors had a significantly greater incidence of pancreatitis.

CONCLUSIONS

Placement of a pancreatic duct stent reduces the incidence of PEP. Several risk factors are associated with PEP.

Impact of introduction of wire-guided cannulation in therapeutic biliary endoscopic retrograde cholangiopancreatography

BACKGROUND AND AIM

Wire-guided cannulation (WGC) might increase the biliary cannulation rate and decrease the risk of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis (PEP). We assessed the learning curve for WGC in therapeutic biliary ERCP (study 1) and compared WGC and conventional contrast-assisted cannulation (CC) by a matched case-control study (study 2).

METHODS

Prospectively collected data of 500 therapeutic biliary ERCP cases (250 consecutive cases of WGC and 250 matched controls of CC) were retrospectively studied. Rate and time of biliary cannulation, total procedure time, PEP, and hyperamylasemia were analyzed.

RESULTS

In study 1, biliary cannulation by WGC was successful in 96% of the first 50 cases, with a median time to cannulation of 3 min. Rates of hyperamylasemia were within 10% after 100 WGC. In study 2, there were no significant differences in the overall cannulation rate and PEP between WGC and CC, but the total procedure time was shorter in WGC (30 vs 35 min, P = 0.059). Rates of hyperamylasemia and the change in serum amylase levels was lower (9% vs 14%, P = 0.069, and + 62.8 U/L vs+ 169.5 U/L, P = 0.043) in WGC, which was more prominent in experienced endoscopists (9% vs 17%, P = 0.025, and + 68.9 U/L vs+ 229.3 U/L, P = 0.014).

CONCLUSIONS

The introduction of WGC was effective in the first 50 cases and did not increase the rate of PEP in biliary therapeutic ERCP.

Precut sphincterotomy, repeated cannulation and post-ERCP pancreatitis in patients with bile duct stone disease

BACKGROUND

Repeated attempts at cannulating the papilla of Vater and "needle-knife" precut sphincterotomy are independent risk factors for post-ERCP pancreatitis. Whether precut alone or repeated attempts at cannulation is the culprit factor in the development of post-ERCP pancreatitis remains controversial.

AIM

To retrospectively assess the role of precutting and multiple cannulation in the occurrence of post-ERCP pancreatitis in a consecutive series of patients with bile stone disease.

METHODS

2004 patients who had undergone endoscopic retrograde cholangio-pancreatography over a 9-year period for bile stones were evaluated. Pancreatitis rate was assessed in relation to the number of cannulation attempts (<10 and ≥10) and precutting.

RESULTS

Procedures were successful in 1878 patients (93.7%). Cannulation was done without precutting in 1717 cases and with in 161. Pancreatitis occurred in 2.7% of patients who had undergone biliary cannulation without precutting and in 6.5% with (p=0.006). It was lower with <10 attempts than with ≥10 (p<0.0001), either without (p<0.0001) or with precutting (p<0.01). Pancreatitis rate did not differ without and with precutting when <10 attempts at cannulation were done, whilst it was lower when precut was done before 10 attempts than when 10 or more attempts were made without precutting (p=0.02).

CONCLUSIONS

Pancreatitis rate was lower when precut was done with <10 attempts than when ≥10 attempts were made without precutting. In experienced hands precut biliary sphincterotomy does not seem to be an independent risk factor for post-ERCP pancreatitis in patients undergoing endoscopic retrograde cholangio-pancreatography for bile duct stones.

Complications of endoscopic retrograde cholangiopancreatography (ERCP) and their risk factors

PURPOSE

Determination of the type and frequency of complications developing after diagnostic and therapeutic endoscopic retrograde cholangiopancreatography (ERCP) as well as the risk factors predisposing to them.

MATERIAL/METHODS

The retrospective study, including 734 ERCP performed in 550 patients, with 404 (55%) ES (endoscopic sphincterotomy) during a 4-year period.

RESULTS

Among 734 ERCP procedures, 76.4% (561) had both diagnostic and therapeutic purpose, 15.2% (112) were only diagnostic. Complications developed after 26 procedures (3.5%): acute pancreatitis (AP) in 8 patients (1.09%), cholangitis in 7 (0.95%) and delayed bleeding in 11 (1.5%) patients. After 49 (6.7%) ES immediate bleeding was observed. The risk factors for AP were: unintentional pancreatic duct contrasting, mechanical lithotripsy, the use of the "pre-cut" technique and bile duct dilatation. Cholangitis was more common in cases with difficult cannulation at older age and with lower baseline bilirubin level. The risk factors for delayed bleeding were: location of the ampulla of Vater in the diverticulum and the use of the "precut" technique. Immediate bleeding was more frequent after revision of bile ducts with Dormia's basket or with balloon, after introduction of contrast medium to the pancreatic duct or in ductal cholelithiasis.

CONCLUSIONS

ERCP performed in the endoscopy unit of a specialist hospital department is a relatively safe procedure, with a low burden of complications as compared to the benefits it provides to appropriately qualified patients.

Bleeding after sphincterotomy in liver transplanted patients with biliary complications

OBJECTIVE

To investigate the rate of immediate persistent bleeding requiring haemostasis and of delayed bleeding after endoscopic sphincterotomy in liver transplanted patients.

METHODS

Clinical records of patients who underwent endoscopic sphincterotomy at our Center between January 2003 and December 2009 were reviewed. Platelets count, international normalized ratio, aminosalicylic acid use, presence of cholangitis and use of precut were evaluated as risk factors for bleeding. Crude and adjusted risk ratios (RR) with 95% confidence interval were calculated, using Poisson model.

RESULTS

Forty-nine liver transplanted patients and 202 controls were studied. Rate of delayed bleeding, but not need of immediate haemostasis, was increased in liver transplanted patients, RRs of 11.0 (3.0-40.0) and 1.5 (0.7-3.4) respectively. The RR of delayed bleeding remained unchanged once adjusted for the other evaluated variables.

CONCLUSION

In liver transplanted patients, the risk of bleeding after endoscopic sphincterotomy is markedly increased. Reasons for this increase still need to be elucidated.

Risk factors for postendoscopic retrograde cholangiopancreatography pancreatitis: a retrospective analysis of 7,168 cases

BACKGROUND AND AIMS

Postendoscopic retrograde cholangiopancreatography pancreatitis (PEP) is one of the most common and serious complications after endoscopic retrograde cholangiopancreatography (ERCP). This study aims to test the hypothesis that the incidence of PEP declined over time due to improved patient selection and/or endoscopic equipment and endoscopic techniques. Therefore, we compared the incidence and risk factors of PEP between four arbitrary chronologically stratified groups.

METHODS

A total of 7,168 cases of ERCP procedures were retrospectively analyzed. According to the different developmental stages of ERCP equipment and techniques, cases were divided into four groups. The incidence rates and major risk factors for acute PEP were compared between groups.

RESULTS

Among the 7,168 cases, the overall incidence of PEP was 3.70% (265/7,168). When analyzed against each stage of ERCP development, the incidence of PEP was 4.09% (77/1,884) in stage I, 5.79% (86/1,489) in stage II, 3.95% (62/1,568) in stage III and 1.80% (40/2,227) in stage IV. By univariate analysis, pancreatic stent placement (OR: 0.300) and use of propofol-balanced anesthesia (OR: 0.632) seem to be protective factors for acute PEP. By multivariate analysis, the following risk factors for PEP could be identified: repeated cannulation (OR: 3.462), pancreatic duct injection (OR: 3.218), balloon dilation of biliary sphincter (OR: 2.847), papillae precut (OR: 2.493), nonselective high-pressure injection (OR: 1.428), excessive electrocoagulation incision (OR: 1.263), history of pancreatitis (OR: 3.843) and suspected sphincter of Oddi dysfunction (OR: 1.782).

CONCLUSIONS

Improved technical procedures were associated with a significant reduction in the incidence of PEP. Risks for developing PEP may be minimized by constant improvement in ERCP techniques, such as routine use of a guidewire, highly selective cannulation, pancreatic stent placement and cautious incision.

Complications of the treatment of endoscopic biliary strictures developing after liver transplantation

BACKGROUND

Bile duct strictures remain a major source of morbidity after orthotopic liver transplantation (OLT). Endoscopic management by the conventional methods of biliary dilatation and/or stent placement has been successful, but sometimes severe complications occur, necessitating prolonged therapy. The aim of this study is to clarify the complications of the endoscopic approach for endoscopic dilatation and/or stent placement.

METHOD

Of 46 patients who underwent living-donor liver transplantation, 10 were diagnosed as having anatomic biliary strictures by endoscopic retrograde cholangiopancreatography (ERCP). Two patients developing biliary strictures after deceased-donor liver transplantation were also enrolled in the study. For the purpose of comparison, 302 patients with a total of 550 consecutive ERCP cases (including 115 patients with 250 malignant bile duct strictures) were recruited in this study. Success rate, number of endoscopy sessions, the median procedure time for ERCP, and incidence of complications including post-ERCP pancreatitis were compared in the OLT cases and other cases.

RESULTS

The following results were obtained in the OLT cases, malignant stricture cases, and all cases, respectively: mean number of endoscopy sessions was 3.62, 2.17, and 1.94 (P = 0.0216, P < 0.0001); post-ERCP pancreatitis occurred in 5 (12.5%), 10 (4.0%), and 19 cases (3.5%) (P = 0.0327, P = 0.0093); and severe pancreatitis occurred in 2 cases of OLT. In a univariate analysis for post-ERCP pancreatitis, OLT was extracted as the only significant risk factor.

CONCLUSIONS

Endoscopic maneuvering for biliary dilatation and/or stent placement following OLT was associated with a higher risk of post-ERCP pancreatitis than the use of the same technique for the treatment of malignant biliary stricture. Endoscopic treatment after OLT was a significant risk factor for post-ERCP pancreatitis.

Prevention of Post-ERCP Pancreatitis

Pancreatitis is the most common complication of ERCP. It can be associated with substantial morbidity. Hence, the minimization of both the incidence and severity of post-ERCP pancreatitis is paramount. Considerable efforts have been made to identify factors that may be associated with an increased risk of this complication. In addition, both procedure- and pharmacological-related interventions have been proposed that may prevent this complication. This paper outlines these interventions and presents the evidence to support their use in the prevention of post-ERCP pancreatitis.

Complications after ERCP in liver transplant recipients

BACKGROUND

Complications of the biliary tract after liver transplantation are successfully managed with ERCP; however, the incidence and risk factors for post-ERCP complications remain unknown.

OBJECTIVE

To examine the incidence, risk factors, and short-term outcome of post-ERCP complications in liver transplant (LT) recipients.

DESIGN

Retrospective evaluation of all ERCPs performed in LT recipients at our institution during a 7-year, 4-month period.

SETTING

Tertiary referral center.

PATIENTS

A total of 243 ERCPs performed in 121 LT recipients with duct-to-duct anastomosis.

MAIN OUTCOME MEASUREMENTS

Incidence of post-ERCP complications. Predictive factors were determined by univariate and multivariate analyses.

RESULTS

Overall complications occurred in 22 procedures (9%) (13 mild, 9 moderate): pancreatitis in 9 patients (3.7%), cholangitis in 8 patients (3.3%), postsphincterotomy bleeding in 4 patients (1.6%), and subcapsular hematoma in 1 patient (0.4%). The mean hospitalization for post-ERCP complications was 4.8 days (range 2-11 days). Logistic regression identified mammalian target of rapamycin inhibitors (odds ratio [OR], 4.65; 95% CI, 1.01-21.81; P = .049), serum creatinine level greater than 2 mg/dL (OR, 4.17; 95% CI, 1.07-16.26; P = .04), biliary sphincterotomy (OR, 3.03; 95% CI, 1.07-8.53; P = .037), and more than 2 pancreatic duct contrast injections (OR, 2.95; 95% CI, 1.10-7.91; P = .032) as independent risk factors for post-ERCP complications, whereas steroid therapy (OR, 0.23; 95% CI, 0.08-0.63; P = .004) was an independent protective factor.

LIMITATIONS

Single-center retrospective study.

CONCLUSIONS

The rate of complications after ERCP in LT recipients seems to be similar to that of non-LT recipients. Complications in this analysis were more common in LT recipients receiving mammalian target of rapamycin inhibitors and those with renal failure, biliary sphincterotomy, and more than 2 pancreatic duct injections, whereas they were less common in those patients on steroid therapy.

Difficult biliary cannulation during ERCP: how to facilitate biliary access and minimize the risk of post-ERCP pancreatitis

Endoscopic retrograde cholangio-pancreatography (ERCP) is one of the most technically challenging procedures in therapeutic endoscopy; difficulties in biliary cannulation and post-ERCP pancreatitis are still significant problems. Deep cannulation of Vater's papilla may fail in up to 5% of cases; selective biliary cannulation reportedly fails in 15-35% of cases, even in experienced hands; repeated and prolonged attempts at cannulation increase the risk of post-procedure pancreatitis. Therefore, cannulation technique plays a pivotal role in successful cannulation and occurrence of post-procedure pancreatitis. This review presents and discusses the techniques that can be used for achieving biliary cannulation after an initial failure and for minimizing the risk of pancreatitis, including guide wire assisted technique, needle knife precutting, trans-pancreatic sphincterotomy, and pancreatic stenting.

Individual and practice differences among physicians who perform ERCP at varying frequency: a national survey

BACKGROUND

ERCP practice patterns in the United States are largely unknown.

OBJECTIVE

To characterize the ERCP practice of U.S. gastroenterologists, stratified by their annual case volume: high volume (HV, >200), moderate volume (MV, 50-200), and low volume (LV, <50).

DESIGN

Anonymous electronic survey.

SUBJECTS

American Society for Gastrointestinal Endoscopy members who are practicing U.S. gastroenterologists.

RESULTS

Among all responders (N = 1006), 63% were derived from community practices. Physicians who performed ERCPs and provided data on annual volume (n = 669) were classified as LV (n = 254), MV (n = 284), and HV (n = 131). During training, 77% of LV physicians did not complete 180 ERCPs compared with 58% of MV and 34% of HV physicians (P < .0001). Only 58% of LV physicians enjoy performing ERCP compared with 88% of MV and 98% of HV physicians (P < .0001); 60% reported being "very comfortable" with ERCP compared with more than 90% of MV and HV physicians (P < .0001). LV physicians are less comfortable with pancreatic duct stenting (PDS) (57% vs 92% [MV] and 98% [HV], P ≤ .02) and using prophylactic PDS. Although HV physicians (42%) were least likely to use short-wire devices (P < .02), use of wire-guided cannulation was similar (74% LV, 72% MV, 66% HV, P = .13). Thirty-seven percent of LV physicians reported comfort with needle-knife sphincterotomy compared with 75% (MV) and 99% (HV) (P < .0001).

LIMITATIONS

Survey completion rate of 18.5%.

CONCLUSIONS

Self-reported comfort and/or enjoyment with ERCP is lower among LV physicians. Wire-guided cannulation is used by the majority of all ERCP practitioners, but prophylactic PDS is less frequently used by LV physicians. Because many LV physicians perform ERCP for higher-grade indications and use advanced techniques (eg, needle-knife sphincterotomy), further LV physician ERCP outcomes data are needed.

Intravenous synthetic secretin reduces the incidence of pancreatitis induced by endoscopic retrograde cholangiopancreatography

OBJECTIVES

This study aimed to evaluate whether synthetic secretin is effective in reducing post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis.

METHODS

This is a single academic medical center, prospective, randomized, double-blind, placebo-controlled trial using secretin (dose of 16 μg) administered intravenously immediately before ERCP. Patients were evaluated for the primary outcome of post-ERCP pancreatitis as diagnosed by a single investigator.

RESULTS

A total of 1100 patients were screened, of whom 869 were randomly assigned to receive secretin (n = 426) or placebo (n = 443) before ERCP and were evaluated after the procedure for efficacy of secretin. The incidence of pancreatitis in the secretin group compared with the placebo group was 36 (8.7%) of 413 patients versus 65 (15.1%) of 431 patients, respectively, P = 0.004. In the subgroup analysis, secretin was highly protective against post-ERCP pancreatitis for patients undergoing biliary sphincterotomy (6/129 vs 32/142, P < 0.001), patients undergoing cannulation of the common bile duct (26/339 vs 56/342, P < 0.001), and patients not undergoing pancreatic sphincterotomy (26/388 vs 57/403, P = 0.001). Analysis of the interaction between these groups reveals that the primary effect of secretin prophylaxis was prevention of post-ERCP pancreatitis in patients undergoing biliary sphincterotomy.

CONCLUSIONS

Synthetic secretin reduces the risk of post-ERCP pancreatitis, particularly in patients in undergoing biliary sphincterotomy.

Life-threatening hemorrhage from the papilla following stent removal (with video)

A 73-year-old man was admitted with acute cholangitis due to stent occlusion. He had had type B chronic hepatitis for 14 years but no liver cirrhosis or coagulopathy. The stent was placed 2 months previously for the treatment of obstructive jaundice due to a very large hepatoma. Emergency endoscopic retrograde cholangiopancreatography was performed. Immediately after removing the stent, using snare forceps through the working channel of the endoscope, spurting and continuous bleeding was seen from the papilla. Biliary deep cannulation was successfully performed using a conventional catheter and guidewire. The tip of the catheter was advanced into the left intrahepatic bile duct for pressure hemostasis. Ten minutes later, the bleeding completely stopped and a 10-Fr stent was inserted into the bile duct.

Predictors of complications after endoscopic retrograde cholangiopancreatography: a prognostic model for early discharge

BACKGROUND

Several studies have evaluated predictors for complications of endoscopic retrograde cholangiopancreatography (ERCP), but their relative importance is unknown. In addition, currently used blood tests to detect post-ERCP pancreatitis are inconsistent. The aim of this study was to determine predictors of post-ERCP complications that could discriminate between patients at highest and lowest risk of post-ERCP complications and to develop a model that is able to identify patients that can safely be discharged shortly after ERCP.

METHODS

In a single-center, retrospective analysis over the period 2002-2007, predictors of post-ERCP complications were evaluated in a multivariable analysis and compared with those identified from a literature review. A prognostic model was developed based on these risk factors, which was further evaluated in a prospective patient population.

RESULTS

From our retrospective analysis and literature review, we selected the eight most important risk factors for post-ERCP pancreatitis and cholangitis. In the prognostic model, the risk factors (precut) sphincterotomy, sphincter of Oddi dysfunction, younger age, female gender, history of pancreatitis, pancreas divisum, and difficult cannulation accounted for a score of 1 each, whereas primary sclerosing cholangitis (PSC) accounted for a score of 2. A sum score of 4 or more in the prognostic model was associated with a high risk of developing pancreatitis and cholangitis (27%; 6/22) in the prospective patient population, whereas a sum score of 3 or less was associated with a low to intermediate risk (8%; 20/252).

CONCLUSIONS

We identified specific patient- and procedure-related factors that are associated with post-ERCP complications. The prognostic model based on these factors is able to identify patients who can be safely discharged the same day after ERCP.

Endoscopy in the diagnosis and management of motility disorders

BACKGROUND

Gastrointestinal illness may result from either an underlying structural abnormality (e.g. neoplastic obstruction), or a functional disorder (e.g. motor diarrhea), or both (e.g. achalasia with squamous esophageal cancer).

AIMS

The purpose of this study was to highlight the potential value and role of endoscopy in the recognition and management of patients with functional and motility disorders.

METHODS

We performed a literature review in PubMed.

RESULTS

Diagnostic and therapeutic endoscopy may be under-used by motility-oriented gastroenterologists; in contrast, motility and other functional studies may be under-used by endoscopists. Yet, many areas of cross-exchange exist.

CONCLUSIONS

This review aims to guide the appropriate indications for the use of endoscopy in diagnosing and treating functional GI and motility disorders and serve as a bridge and a forum of exchange between endoscopists and motility specialists.

ERCP with cholangiopancreatoscopy may be associated with higher rates of complications than ERCP alone: a single-center experience

BACKGROUND

Comparative data regarding complications associated with ERCP alone or when performed with cholangiopancreatoscopy (CP) are lacking.

OBJECTIVE

To determine whether ERCP complications are more frequent when concomitant CP is performed.

DESIGN

A retrospective query of a prospectively maintained database of ERCP, CP, and complications.

MAIN OUTCOME MEASUREMENTS

Consensus criteria complications and additional adverse events (AEs), including unplanned medical evaluation, cardiopulmonary/sedation events, and others.

SETTING

Academic, tertiary referral center.

RESULTS

A total of 4214 ERCPs were performed (337 sphincter of Oddi manometry cases excluded) during the study period, of which 3475 ERCPs and 402 ERCPs with CP were analyzed. There were 28 of 402 AEs (7.0%) in the ERCP with CP group and 101 of 3475 (2.9%) in the ERCP-only group (odds ratio [OR], 2.50; 95% CI, 1.56-3.89). Subgroup analysis revealed a significantly higher rate of cholangitis in the CP group versus ERCP group (1.0% vs 0.2%; OR, 4.98; 95% CI, 1.06-19.67) and similar rates of pancreatitis (2.2% vs 1.3%; OR, 1.75; 95% CI, 0.74-3.65) and perforation (1.0% vs 0.3%; OR, 3.16; 95% CI, 0.73-10.75).

LIMITATIONS

Retrospective review of a complications database that relies on physician self-reporting.

CONCLUSIONS

AEs from CP may be more than double those of ERCP alone (when sphincter of Oddi manometry cases are excluded). CP appears to be associated with a significantly higher rate of cholangitis, possibly because of intermittent intraductal irrigation required during the procedure.

EUS and ERCP complication rates are not increased in elderly patients

BACKGROUND

Further studies evaluating the safety of advanced endoscopic procedures in elderly patients are needed.

AIM

To evaluate the safety of endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound (EUS) in the elderly.

METHODS

The study population, consisting of 1,000 patients who underwent ERCP or EUS, was divided into two cohorts. The elderly cohort consisted of patients ≥ 75 years old. The nonelderly cohort consisted of patients <75 years old. The data collected included demographic information, type of procedure completed, procedure medication used, and endoscopic intervention performed. Complications included any event which occurred during the procedure or up to 1 month post procedure.

RESULTS

A total of 600 ERCPs and 400 EUS were included. The mean age of the elderly cohort was 80 years (range 75-95 years, n = 184) versus 54 years (range 13-74 years, n = 816) for the nonelderly cohort. The ERCP complication rate was 10.0% in the elderly versus 10.6% (P = 1.0) for the nonelderly. The EUS complication rate was 4.8% in the elderly versus 3.1% in the nonelderly (P = 0.49). The overall complication rates were identical at 7.6% (P = 1.0). Sedation doses were lower for the elderly cohort (P < 0.001). There was a higher rate of procedure bleeding in the elderly cohort (P = 0.016).

CONCLUSION

Advanced age is not a contraindication for advanced endoscopic procedures. There is no significant increase in the rate of overall procedure-related complications seen with either ERCP or EUS in elderly patients; however, elderly patients have a higher risk of bleeding. Less procedure-related sedation medication is required for elderly patients.

Difficult biliary cannulation

Endoscopic retrograde cholangiopancreatography (ERCP) is the most technically challenging procedure routinely performed by endoscopists. ERCP cannulation requires the insertion of a subcentimeter catheter through a tiny orifice at a distance of almost a meter from the operator. Only after successful cannulation of the bile duct can the real "business" of ERCP be performed (eg, sphincterotomy, stone extraction, stent placement). Selective bile duct cannulation is all the more exacting due to the occasional anatomic challenge (eg, postsurgical anatomy, duodenal stricture) or wayward catheter. Serious morbid complications can and do occur, even in the hands of the most gifted and facile endoscopists. Although there are some "tricks" to facilitate successful cannulation of the bile duct, experience "trumps" all tricks. Of greatest importance when faced with a difficult cannulation is the recognition of one's personal limitations.

Biliary stent placement is associated with post-ERCP pancreatitis

BACKGROUND

A variety of factors have been linked to post-ERCP pancreatitis. However, the role of biliary stenting has not been well studied.

OBJECTIVE

To evaluate the relationship between biliary stenting and post-ERCP pancreatitis.

DESIGN

Prospective study of all patients undergoing ERCP with biliary stenting over a 7.5-year period. All patients had follow-up at 24 to 48 hours after the procedure and at 1 month.

SETTING

A single-center tertiary referral academic medical center.

PATIENTS

Consecutive patients undergoing ERCP over a 7.5-year period.

INTERVENTIONS

Endoscopic therapy based on the indication for and findings of ERCP.

MAIN OUTCOME MEASUREMENTS

The rate of post-ERCP pancreatitis.

RESULTS

A total of 3499 patients underwent ERCP with bile duct stent placement of a native papilla performed in 660: 544 (83%) 10F and 116 (17%) 7F. The most common indication for stent placement was pancreaticobiliary malignancy in 250 patients (37%). The overall rate of pancreatitis for the entire cohort was 3.17%. Multivariate analysis identified 6 factors that were associated with pancreatitis: previous ERCP pancreatitis (odds ratio [OR], 2.44; 95% CI, 1.31-4.55), age (OR, 2.30; 95% CI, 1.44-3.67), history of acute pancreatitis (OR, 1.78; 95% CI, 1.12-2.88), pancreatic sphincterotomy (OR, 2.30, 95% CI, 1.43-3.70), suspected sphincter of Oddi dysfunction (OR, 3.91; 95% CI, 2.36-6.46), and bile duct stenting (OR, 1.72; 95% CI, 1.03-2.88). The rates of pancreatitis were not significantly different based on performing sphincterotomy before stent placement, stent type, stent length, stent size, or indication.

LIMITATIONS

Single-center study.

CONCLUSIONS

Bile duct stent placement is an independent predictor for pancreatitis, and pancreatitis is not related to performing sphincterotomy before stenting or to stent characteristics.

Myocardial ischemia during endoscopic retrograde cholangiopancreatography: an overlooked issue with significant clinical impact

BACKGROUND AND AIM

The occurrence of peri-procedural myocardial ischemia with endoscopic retrograde cholangiopancreatography (ERCP) has been documented, but its significance remains controversial. This study aimed to investigate the incidence and risk factors of myocardial ischemia during ERCP procedures and to analyze the potential association between myocardial ischemia and post-ERCP complications.

METHODS

Ambulatory 24-h ST-segment monitoring from 30 min prior to 24 h after ERCP was obtained on 71 patients from September 2006 to August 2007. Changes in vital signs during ERCP, post-ERCP complications, and their outcomes were recorded and analyzed.

RESULTS

Cardiac ischemia occurred in 13 patients (18.3%) during ERCP and one patient developed myocardial infarction. More patients in the ischemic group (38.5%) than in the non-ischemic group (5.2%) had ST-T changes in pre-ERCP resting electrocardiography (P < 0.01). Hypotension during ERCP was found only in the ischemic group (15.4% vs 0%; P = 0.03). Patients with cardiac ischemia during ERCP had a significantly higher rate of elevated serum amylase and lipase levels (53.8% vs 15.5%; P < 0.01) and post-ERCP pancreatitis (30.8% vs 6.9%; P = 0.03). Multivariable logistic regression analysis revealed that cardiac ischemia during ERCP (OR: 5.21, P = 0.050) and pancreatic duct cannulation (OR: 5.7, P = 0.036) were independent predictors for post-ERCP pancreatitis.

CONCLUSIONS

ST-T changes on resting electrocardiography and intra-procedural hypotension are risk factors of myocardial ischemia during ERCP. Post-ERCP hyperamylasemia, hyperlipasemia, and pancreatitis were associated with myocardial ischemia during ERCP.

Risk factors for post-ERCP pancreatitis in high- and low-volume centers and among expert and non-expert operators: a prospective multicenter study

OBJECTIVES

Prospective studies have identified a number of patient- and procedure-related independent risk factors for post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis, with different conclusions, so various questions are still open. The endoscopist's expertise, case volume, and case mix can all significantly influence the outcome of ERCP procedures, but have been investigated little to date.

METHODS

We identified patient- and procedure-related risk factors for post-ERCP pancreatitis and the impact of the endoscopist's experience and the center's case volume, using univariate and multivariate analysis, in a multicenter, prospective study involving low- and high-volume centers, over a 6-month period.

RESULTS

A total of 3,635 ERCP procedures were included; 2,838 (78%) ERCPs were performed in the 11 high-volume centers (median 257 each) and 797 in the 10 low-volume centers (median 45 each). Overall, 3,331 ERCPs were carried out by expert operators and 304 by less-skilled operators. There were significantly more grade 3 difficulty procedures in high-volume centers than in low-volume ones (P<0.0001). Post-ERCP pancreatitis occurred in 137 patients (3.8%); the rates did not differ between high- and low-volume centers (3.9% vs. 3.1%) and expert and non-expert operators (3.8% vs. 5.5%). However, in high-volume centers, there were 25% more patients with patient- and procedure-related risk factors, and the pancreatitis rate was one-third higher among non-expert operators. Univariate analysis found a significant association with pancreatitis for history of acute pancreatitis, either non-ERCP- or ERCP-related and recurrent, young age, absence of bile duct stones, and biliary pain among patient-related risk factors, and >10 attempts to cannulate the Vater's papilla, pancreatic duct cannulation, contrast injection of the pancreatic ductal system, pre-cut technique, and pancreatic sphincterotomy, among procedure-related risk factors. Multivariate analysis also showed that a history of post-ERCP pancreatitis, biliary pain, >10 attempts to cannulate the Vater's papilla, main pancreatic duct cannulation, and pre-cut technique were significantly associated with the complication.

CONCLUSIONS

A history of pancreatitis among patient-related factors, and multiple attempts at cannulation among procedure-related factors, were associated with the highest rates of post-ERCP pancreatitis. Pre-cut sphincterotomy, although identified as another significant risk factor, appeared safer when done early (fewer than 10 attempts at cannulating), compared with repeated multiple cannulation. The risk of post-ERCP pancreatitis was not associated with the case volume of either the single endoscopist or the center; however, high-volume centers treated a larger proportion of patients at high risk of pancreatitis and did a significantly greater number of difficult procedures.

ERCP-induced and non-ERCP-induced acute pancreatitis: Two distinct clinical entities with different outcomes in mild and severe form?

BACKGROUND

Acute pancreatitis is a complication of endoscopic retrograde cholangio-pancreatography. Aim of the study was to compare endoscopic retrograde cholangio-pancreatography-related acute pancreatitis with attacks caused by other factors.

METHODS

A series of consecutive patients with non-endoscopic retrograde cholangio-pancreatography-related acute pancreatitis referred to our hospital in 2007-2008 were examined retrospectively, and compared with the same number of patients with post-endoscopic retrograde cholangio-pancreatography acute pancreatitis done in the same institution. Both groups comprised 116 patients and were comparable for mean age, sex, and body mass index. Duration of abdominal pain, pancreatic enzyme elevation, hospital stay, and type of analgesia administered were retrieved.

RESULTS

There were no differences between the groups as regards the severity of pancreatitis, mortality rate and hospitalisation, although mortality was double in severe post-endoscopic retrograde cholangio-pancreatography acute pancreatitis. In the mild acute pancreatitis cases, serum amylase fell 50% from the peak in a mean of 46.4h (range 24-72) in group 1 and 38.9h (range 24-72) in group 2 (p<0.001). The peak amylase serum level halved within 48h in 73.6% of cases with non-endoscopic retrograde cholangio-pancreatography-related acute pancreatitis, and in 92% of patients with endoscopic retrograde cholangio-pancreatography-related acute pancreatitis (p<0.001).

CONCLUSIONS

Non-endoscopic retrograde cholangio-pancreatography- and endoscopic retrograde cholangio-pancreatography-induced pancreatitis did not differ as regards severity, hospital stay or mortality; in mild pancreatitis, serum amylase halved significantly sooner in post-endoscopic retrograde cholangio-pancreatography cases.

A meta-analysis for the effect of prophylactic GTN on the incidence of post-ERCP pancreatitis and on the successful rate of cannulation of bile ducts

Background

Glyceryl trinitrate (GTN) has been shown to be able to relax the sphincter of Oddi (SO) both in animals and humans. Theoretically, the use of these compounds during and after endoscopic retrograde cholangiopancreatgraphy (ERCP) could relax the biliary and pancreatic sphincters, facilitating cannulation of common bile duct (CBD) during the procedure, or minimizing potential pancreatic outflow obstruction after the procedure. However, clinical trials evaluating the protective effect of GTN on the post-endoscopic retrograde cholangiopancreatgraphy pancreatitis (PEP) have yielded inconclusive results. This meta-analysis is to systematically assess the effect of prophylactic administration of glyceryl trinitrate (GTN) on the prevention of PEP and the effect on the cannulation of bile ducts.

Methods

By searching PubMed (1966 to September 2009), CENTRAL (Cochrane Controlled trials Register; issue 3, 2009) and EMBASE.com (1984 to September 2009), two independent reviewers systematically identified prospective randomized controlled trials (RCTs) detecting the effect of prophylactic GTN on the incidence of PEP and on the cannulation of bile ducts. A meta-analysis of these clinical trials was then performed.

Results

There are 55/899(6.1%) patients suffering PEP in the treatment group versus 95/915(10.4%) patients in the placebo group. The overall pooled risk of PEP was significantly lower in the GTN group than in the placebo group (OR 0.56, 95% CI: 0.40 to 0.79, p = 0.001). Subgroup analyses suggested that GTN administered by the sublingual form (OR 0.34,95% CI:0.16 to 0.75, p = 0.007) is more effective than transdermal route(OR 0.64,95% CI:0.40 to 1.01, p = 0.05), and the protective effect of GTN was far more obvious in the centers with high incidence of PEP (OR 0.40, 95% CI:0.24 to 0.67, p = 0.0006) than those centers with a low incidence of PEP (OR 0.75, 95% CI: 0.47 to 1.20, p = 0.22). Additionally, the meta-analysis suggests that GTN was not helpful for the cannulation of bile ducts.

Conclusion

We concluded that prophylactic administration of GTN may significantly reduce the incidence of PEP and not be helpful for the cannulation of bile ducts.

Is outpatient ERCP suitable, feasible, and safe? The experience of a Spanish community hospital

BACKGROUND

We wanted to evaluate the safety of outpatient endoscopic retrograde cholangiopancreatography (ERCP). The follow-up of an ERCP outpatient during a short observation period could be a feasible and safe approach.

METHODS

To evaluate the safety of outpatient ERCP, we assessed the rate of post-ERCP complications found and missed during a 6-h observation period after therapeutic ERCP.

RESULTS

We performed 236 ERCPs on an outpatient basis, with a failure rate of 3.7% but with an overall completion rate for the intended treatment of 90.7%. Seventy-eight percent of the ERCPs were primarily therapeutic. The age of the patients was 63.9 years and 61.9% were females. One hundred seventy-seven (74.5%) patients were discharged from the hospital after the observation period. Thirty-three (14.1%) patients were admitted without further delay due to unexpected ERCP findings or for early detection of complications. Twenty-seven (11.4%) patients had a prolonged hospital stay because of complications during the observation period. Just two patients previously discharged developed later complications: cholangitis and pancreatitis (0.84% of the ERCPs and 7.4% of the overall complications). There were 27 ERCP complications (12.1%). Of the overall complications, 29.6% were diagnosed very early after the procedure and 62.9% were diagnosed during the observation period. 8.9% out of the 12.1% of the ERCP complications were mild to moderate. There was no mortality.

CONCLUSION

Twenty-five (92.6%) of ERCP complications occurred during the first 6 h, making the use of this short observation period safe for an early discharge. The evolution of the patients who developed delayed complications was unremarkable. Whenever outpatient ERCP is feasible, it should be done to help cut costs.

Endoscopic management of biliary ductal stones

Bile duct stone management has greatly changed in the past 2 decades. Open surgical techniques have mostly been replaced by transoral endoscopic techniques. Routine common bile duct stones can be managed by standard biliary endoscopic sphincterotomy and extraction. Various advanced transoral techniques can also manage most difficult ductal stones. In skilled centers, laparoscopic ductal stone management has assumed a back-up role.