Urgent endoscopic drainage for acute suppurative cholangitis

Percutaneous management of biliary emergencies

Most biliary emergencies can be classified as either infectious or obstructive. Infectious complications include acute cholecystitis and cholangitis. Many of these can be treated either surgically or endoscopically, but in some instances, less-invasive percutaneous techniques can be utilized to successfully treat these conditions. Obstructive complications, especially in the setting of liver transplant, can be serious if not treated quickly. Percutaneous drainage is sometimes the only acceptable treatment alternative for these patients.

Diagnosis and management of acute cholangitis

Acute cholangitis is a potentially life-threatening systemic disease resulting from a combination of infection and obstruction of the biliary tree, secondary to different underlying etiologies. Common causes of cholangitis (eg, gallstones, benign and malignant biliary strictures) are well known. However, others (eg, immunoglobulin-G subclass-4-related sclerosing cholangitis) have been described only recently, are still under evaluation, and need to gain broader attention from clinicians. The diagnosis of acute cholangitis is based on clinical presentation and laboratory data indicating systemic infection, as well as diagnostic imaging modalities revealing signs of biliary obstruction and possibly an underlying etiology. The clinical presentation varies, and initial risk stratification is important to guide further management. Early medical therapy, including fluid resuscitation and appropriate antibiotic coverage, is of major importance in all cases, followed by a biliary drainage procedure and, if possible, definitive therapy of the underlying etiology. The type and timing of biliary drainage should be based on the severity of the clinical presentation, and the availability and feasibility of drainage techniques, such as endoscopic retrograde cholangiopancreatography (ERCP), percutaneous transhepatic cholangiography (PTC), and open surgical drainage. ERCP plays a central role in the management of biliary obstruction in patients with acute cholangitis. Endoscopic ultrasound-guided biliary drainage recently emerged as a possible alternative to PTC for second-line therapy if ERCP fails or is not possible.

Is nasobiliary tube really safe? A case report

A case of esophageal ulcer caused by nasobiliary tube is described. This tool is not routinely considered to be a cause of major complications in the literature and to our knowledge, this is the first report of this kind of complication in nasobiliary tube placement. A 72-year-old patient presented with Charcot's triad and was demonstrated to have cholangitis with multiple biliary stones in the common bile duct. Biliary drainage was achieved through endoscopic retrograde cholangiography, endoscopic sphincterotomy, biliary tree drainage and nasobiliary tube with double pigtail. The patient presented odynophagia, dysphagia and retrosternal pain 12 h after the procedure and upper endoscopy revealed a long esophageal ulcer, which was treated conservatively. This report provides corroboration of evidence that nasobiliary tube placement has potential complications related to pressure sores. In our opinion this is a possibility to consider in informed consent forms.

[Acute cholangitis]

Acute cholangitis is a potentially severe infection of the biliary tract, resulting from a biliary obstruction. The most frequent cause of cholangitis is common duct stones. Biliary tract obstruction and secondary bacterial colonization lead to infection. In most cases, the causative agents are intestinal microflora, mostly aerobic microorganisms (and, to a lesser extent, anaerobic bacteria). The Charcot triad constitutes the most frequent symptomatology. Diagnosis is confirmed by means of radiological techniques, such as ultrasonography, computed tomography scan, or magnetic resonance imaging of the liver, in which signs of obstruction of the biliary tract can be detected and its etiology can often be determined. In most patients the treatment of choice is early appropriate antimicrobial therapy and biliary drainage, generally using endoscopic techniques.

What are the risk factors for acute suppurative cholangitis caused by common bile duct stones?

BACKGROUND/AIMS

Acute suppurative cholangitis (ASC), a severe form of acute cholangitis, is a life-threatening condition that must be treated with appropriate and timely management. The purpose of this study was to identify the factors that predispose patients to ASC.

METHODS

We retrospectively investigated 181 patients (100 men, 81 women; age, 70.66±7.38 years, mean±SD) who were admitted to Wonkwang University Hospital between January 2005 and June 2007 for acute cholangitis with common bile duct (CBD) stones. All patients underwent endoscopic retrograde cholangiopancreatogram to remove the stones. Variables and factors that could be assessed upon admission were analyzed to identify the risk factors for the development of ASC.

RESULTS

Of the 181 patients, 44 (24.3%) presented with ASC. On multivariate analysis, the followings were found to be independent risk factors for the development of ASC: impacted common bile duct stone (p=0.010), current smoker status (p=0.008), advanced age (>70 years; p=0.002), and gallstone (p=0.016). The most commonly isolated organisms in bile culture were Enterococcus species, Escherichia coli, and Klebsiella species.

CONCLUSIONS

Impacted bile-duct stones, current smoking, advanced age, and gallstones were identified as independent risk factors for the development of ASC in patients with CBD stones. These results suggest that emergency biliary drainage is beneficial in patients with these risk factors.

Routine bile collection for microbiological analysis during cholangiography and its impact on the management of cholangitis

BACKGROUND

Antibiotic treatment of cholangitis is often insufficient because of inappropriate antibiotic use or bacterial resistance.

OBJECTIVE

To evaluate the role of routine bile collection during endoscopic retrograde cholangiography or percutaneous transhepatic cholangiography for microbiological analysis in the antibiotic management of cholangitis and to identify risk factors of bacteriobilia.

DESIGN

Prospective, observational, diagnostic study.

SETTING

Hannover Medical School, Hannover, Germany.

PATIENTS AND INTERVENTION

This study involved 243 consecutive patients undergoing endoscopic retrograde cholangiography/percutaneous transhepatic cholangiography for biliary complications after orthotopic liver transplantation (27%), malignancy (27%), primary sclerosing cholangitis (15%), benign strictures (11%), and choledocholithiasis (8%).

MAIN OUTCOME MEASUREMENTS

Microbiological examination of bile samples.

RESULTS

Patients with biliary stents or who were receiving repeated interventions after orthotopic liver transplantation were at increased risk of bacteriobilia (P < .05). The rate of gram-positive monomicrobial infection was higher in patients with primary sclerosing cholangitis (P < .01). In 40 examinations, patients presented with preprocedural cholangitis although they were receiving antibiotics. According to bile culture results, the antibiotic treatment was modified to a more specific therapy in 72.5% of patients. In patients who developed cholangitis after endoscopic retrograde cholangiography (27 examinations), specific antibiotic treatment was started or refined in 67% of cases, based on bile culture results.

LIMITATIONS

Contamination of samples during intervention cannot be totally excluded.

CONCLUSION

Orthotopic liver transplantation, biliary stenting, and repeated interventions are risk factors of bacteriobilia. In our patients with primary sclerosing cholangitis, gram-positive monomicrobial infections were more common. A bile sample collected during cholangiography for microbiological analysis is a simple, potentially valuable, diagnostic tool in patients with cholangitis. Each center should recognize its own patterns of infection to ensure ideal targeted therapy.

Is nasobiliary drainage unnecessary for drainage of acute suppurative cholangitis? Our experience

Two randomized controlled trials comparing endoscopic nasobiliary drainage (ENBD) and internal endoscopic biliary drainage (internal EBD) for acute suppurative cholangitis (ASC) showed no significant difference in efficacy and both preferred internal EBD to ENBD. In this study, the necessity of ENBD was re-examined. Over five years, 59 patients underwent an emergency endoscopic procedure for ASC in our institute. If drainage was needed, we selected internal EBD as a first choice and ENBD was used in patients predicted to have early obstruction of the tube or retrograde infection of the bile duct. The rate of ENBD, for which reason ENBD was selected, and the efficacy of drainage were examined retrospectively. In the 59 patients, 40 patients had the stones completely removed without drainage, five internal EBD and two ENBD were performed without removal of stones and five internal EBD and seven ENBD were performed after removal of stones. In terms of white blood cell count and direct bilirubin level, no significant difference was observed between ENBD and internal EBD patients. ENBD was mainly selected for the patients with multiple biliary strictures, hemorrhage tendency and excessive purulent bile. Even though internal drainage is suitable in many ASC patients, ENBD is necessary in selected patients.

Transnasal endoscopic biliary drainage as a rescue management for the treatment of acute cholangitis

Endoscopic biliary drainage has been established to provide effective treatment for acute obstructive jaundice and cholangitis. A recently developed ultrathin transnasal videoendoscope (TNE) is minimally invasive even for critically ill patients and can be performed without conscious sedation. Transnasal endoscopic biliary drainage (TNE-BD) is performed using a front-viewing TNE with approximately 5 mm outer diameter and 2 mm working channel diameter. Finally, 5F naso-biliary tube or plastic stent are placed. Technical success rates are approximately 100% and 70% for post-endoscopic sphincterotomy or placement of self-expandable metallic stent, and intact papilla, respectively. There are no serious complications. In conclusion, although further cases should be accumulated, TNE-BD and in particular, one-step naso-biliary drainage using TNE may be a useful and novel technique for the treatment of acute cholangitis.

Diagnosis and management of acute cholangitis

Bacterial infection that occurs in the setting of biliary obstruction can lead to acute cholangitis, a condition characterized by fever, abdominal pain and jaundice. Choledocholithiasis is the most common cause of acute cholangitis and is often associated with bacterial infection and colonization in addition to biliary obstruction. Iatrogenic introduction of bacteria into the biliary system most commonly occurs during endoscopic retrograde cholangiopancreatography in patients with biliary obstruction. The majority of patients with acute cholangitis respond to antibiotic therapy, but endoscopic biliary drainage is ultimately required to treat the underlying obstruction. Acute cholangitis is often diagnosed using the clinical Charcot triad criteria; however, recommendations from an international consensus meeting in Tokyo produced the most comprehensive recommendations for the diagnosis and management of acute cholangitis. These guidelines enable a more accurate diagnosis of acute cholangitis than do earlier methods, and they facilitate the classification of disease as mild, moderate or severe. Although these guidelines represent a notable advance toward defining a universally accepted consensus for the definition of acute cholangitis, they have several limitations. This Review discusses current recommendations for the diagnosis of acute cholangitis and addresses the advantages and disadvantages of different modalities for the treatment of this disease.

Endoscopic biliary drainage by 7 Fr or 10 Fr stent placement in patients with acute cholangitis

BACKGROUND AND STUDY AIMS

Endoscopic biliary drainage is an established mode of treatment for acute cholangitis. We compared the safety and efficacy of 7 Fr and 10 Fr stent placement for biliary drainage in patients with acute cholangitis.

PATIENTS AND METHODS

We recruited 40 patients with severe cholangitis who required endoscopic biliary drainage. Patients were randomized to have either a 7 Fr or a 10 Fr straight flap stent placement during endoscopy. Outcome measures included complications related to endoscopic retrograde cholangiopancreatography (ERCP) and clinical outcome.

RESULTS

Of 40 patients, 20 were randomized to the 7 Fr stent group and 20 to the 10 Fr stent group. All patients had biliary obstruction due to stones in the common bile duct. Indications for biliary drainage were: fever >100.4 degrees F (n = 27), hypotension (n = 6), peritonism (n = 10), impaired consciousness (n = 8), and failure to improve with conservative management (n = 13). Biliary drainage was achieved in all patients. Abdominal pain, fever, jaundice, hypotension, peritonism, and altered sensorium improved after a median period of 3 days in both groups. Leukocyte counts became normal after a median time of 4 days in the 7 Fr stent group and 6 days in the 10 Fr stent group. There were no ERCP-related complications. There were no instances of occlusion or migration of stent. The success rates of biliary drainage in cholangitis were not affected by the size of stent used.

CONCLUSIONS

Biliary drainage by 7 Fr stent or 10 Fr stent is equally safe and effective treatment for patients with severe cholangitis.

Analysis of risk factors predictive of early mortality and urgent ERCP in acute cholangitis

BACKGROUND

Multifactor prognostic scoring systems have been developed for acute pancreatitis to identify those patients with a potentially poor prognosis. A similar system for patients with acute cholangitis is still lacking.

GOALS

To identify common clinical, biochemical, and etiologic variables that can be used to predict mortality and the need for early endoscopic retrograde cholangiopancreatography (ERCP) in patients with acute cholangitis.

STUDY

A retrospective study of 108 patients with acute cholangitis was performed at a single center. Univariate analysis and logistic regression were used to identify variables that were significantly associated and predictive of mortality and need for early ERCP.

RESULTS

Univariate analysis identified 18 variables significantly associated with mortality and 15 variables that predicted the need for early ERCP. Through logistic regression total bilirubin (P<0.01), partial prothrombin time (P<0.01), and presence of a liver abscess (P<0.01) were found to be significant in predicting mortality. Alanine aminotransferase (P<0.01) and white blood cell count (P<0.01) were determined to be predictive of a need for early ERCP. The scoring systems for predicting mortality (93.9%, 80.7%) and early ERCP (98%, 91%) were both highly sensitive and specific, respectively.

CONCLUSIONS

Acute cholangitis is a disease that presents with varying severity. We report a scoring system that can be used to identify patients at high risk of early mortality and those that may benefit from earlier ERCP.

The safety and effectiveness of endoscopic biliary decompression by plastic stent placement in acute suppurative cholangitis compared with nasobiliary drainage

BACKGROUND

Endoscopic retrograde biliary drainage (ERBD) by using a plastic stent is suggested to be as effective as endoscopic nasobiliary drainage (ENBD) for temporary biliary drainage in acute suppurative cholangitis (ASC). However, there are few studies that compared ERBD and ENBD in ASC.

OBJECTIVES

We compared the safety and efficacy of ERBD and ENBD for temporary biliary drainage in patients with ASC.

DESIGN

A case series.

SETTING

A tertiary-referral center.

PATIENTS AND INTERVENTIONS

Eighty patients with ASC underwent endoscopic biliary drainage with ENBD (n = 41) and ERBD (n = 39).

MAIN OUTCOME MEASUREMENT

Clinical outcomes, including complications related to ERCP and complications related to the type of the indwelling catheter.

RESULTS

Endoscopic biliary drainage was successfully achieved in all patients (100%). There were no significant differences in the demographic data between the 2 groups. There were no differences in the improvement of clinical and laboratory parameters between the 2 groups. Overall ERCP-related complication rates in the ENBD and ERBD groups were 31.7% and 38.5%, respectively (P = .527). Hyperamylasemia occurred in 18 patients, 12.2% in the ENBD group (5/41) and 33.3% in the ERBD group (13/39) (P = .024). Without endoscopic sphincterotomy (EST), there was no statistically significant difference in the incidence of hyperamylasemia between the 2 groups. However, with an EST, hyperamylasemia was more frequent in the ERBD group (12/28 [42.9%]) than in the ENBD group (3/27 [11.1%]) (P = .008).

LIMITATION

A single-center experience.

CONCLUSIONS

Endoscopic biliary decompression, whether by ERBD or ENBD, is an effective treatment for patients with ASC. However, more frequent hyperamylasemia with ERBD and EST deserves further evaluation.

Complications of percutaneous transhepatic biliary drainage in patients with dilated and nondilated intrahepatic bile ducts

Percutaneous transhepatic biliary drainage (PTBD) have been described as an effective technique to obtain biliary access. Between January 1996 and December 2006, a total of 419 consecutive patients with endoscopically inaccessible bile ducts underwent PTBD. The current retrospective study evaluated success and complication rates of this invasive technique. PTBD was successful in 410/419 patients (97%). The success rate was equal in patients with dilated and nondilated bile ducts (p=0.820). In 39/419 patients (9%) procedure related complications could be observed. Major complications occurred in 17/419 patients (4%). Patients with nondilated intrahepatic bile ducts had significantly higher complication rates compared to patients with dilated intrahepatic bile ducts (14.5% vs. 6.9%, respectively [p=0.022]). Procedure related deaths were observed in 3 patients (0.7%). In conclusion, percutaneous transhepatic biliary drainage is an effective procedure in patients with dilated and nondilated intrahepatic bile ducts. However, patients with nondilated intrahepatic bile ducts showed a higher risk for procedure related complications.

Efficacy and safety of 1-step transnasal endoscopic nasobiliary drainage for the treatment of acute cholangitis in patients with previous endoscopic sphincterotomy (with videos)

BACKGROUND

Endoscopic nasobiliary drainage (NBD) for the treatment of acute cholangitis is an accepted method. A recently developed ultrathin transnasal videoendoscope is minimally invasive, even for patients who are critically ill.

OBJECTIVE

To evaluate the clinical efficacy and safety of 1-step NBD by transnasal videoendoscopy (TNE).

DESIGN

Prospective case study.

SETTING

This study was performed at Tokyo Medical University Hospital.

PATIENTS

Twenty patients with acute cholangitis who had previously undergone an endoscopic sphincterotomy (ES); including 10 with bile-duct stones, 8 with pancreatic cancers, 1 with chronic pancreatitis, and 1 with benign biliary stricture, were enrolled in this study. An indwelling self-expandable metallic stent (SEMS) was placed in all patients with pancreatic cancers.

INTERVENTION

All patients underwent NBD via front-viewing TNE. A 5F NBD catheter was placed into the bile duct.

MAIN OUTCOME MEASUREMENT

The efficacy and safety of this technique.

RESULTS

The transnasal insertion of TNE was feasible in all patients, and none had epistaxis. Abdominal pain, fever, and jaundice were improved at 24 hours after the procedure in the majority of patients. The mean procedural time was 18.1 minutes. One patient pulled out the NBD catheter. None of the patients died. TNE-NBD was achieved in 19 patients (95%).

LIMITATIONS

Maneuverability of the TNE, limited to patients with a previous ES or the placement of an SEMS.

CONCLUSIONS

NBD that uses TNE may be a useful and novel technique for the treatment of acute cholangitis in patients with previous ES.

In vitro activity of moxifloxacin and piperacillin/sulbactam against pathogens of acute cholangitis

AIM: To analyze the in vitro activity of moxifloxacin and piperacillin/sulbactam against pathogens isolated from patients with acute cholangitis.

METHODS: In this prospective study a total of 65 patients with acute cholangitis due to biliary stone obstruction (n = 7), benign biliary stricture (n = 16), and malignant biliary stricture (n = 42) were investigated with regard to spectrum of bacterial infection and antibiotic resistance. Pathogens were isolated from bile cultures in all study patients. In 22 febrile patients, blood cultures were also obtained. In vitro activity of moxifloxacin and piperacillin/sulbactam was determined by agar diffusion.

RESULTS: Thirty-one out of 65 patients had positive bile and/or blood cultures. In 31 patients, 63 isolates with 17 different species were identified. The predominant strains were Enterococcus species (26/63), E.coli (13/63) and Klebsiella species (8/63). A comparable in vitro activity of moxifloxacin and piperacillin/sulbactam was observed for E.coli and Klebsiella species. In contrast, Enterococcus species had higher resistances towards moxifloxacin. Overall bacteria showed antibiotic resistances in vitro of 34.9% for piperacillin/sulbactam and 36.5% for moxifloxacin.

CONCLUSION: Enterococcus species, E.coli and Klebsiella species were the most common bacteria isolated from bile and/or blood from patients with acute cholangitis. Overall, a mixed infection with several species was observed, and bacteria showed a comparable in vitro activity for piperacillin/sulbactam and moxifloxacin.

Transpancreatic precut sphincterotomy for cannulation of inaccessible common bile duct: a safe and successful technique

OBJECTIVE

Obstruction of the biliary tract can lead to severe complications. The common treatment of patients with biliary tract obstruction is the decompression by endoscopic procedures. However, cannulation of the common bile duct can be difficult under certain instances because of anatomical variations or obstruction at the biliary entrance level. Needle-knife or precut sphincterotomy has been described as technique to facilitate biliary access in patients with difficult bile duct cannulation. In the current study, we evaluated success and complication rates of a wire-guided transpancreatic precut technique at our hospital.

METHODS

Between January 2003 and June 2006, a total of 108 patients with jaundice but with inaccessible bile ducts using classic techniques (failed primary cannulation or failed needle-knife papillotomy) underwent a wire-guided transpancreatic precut sphincterotomy. Precuts were performed using a soft guide wire placed in the pancreatic duct without injection of contrast fluid into the pancreatic duct.

RESULTS

We studied cannulation success and complications associated with postprocedural hospitalization. Bile duct cannulation was successful in 103 (95.4%) of the 108 patients. Five patients (4.6%) required a percutaneous transhepatic biliary drainage. In 108 patients, there were 12 patients (11.1%) with procedure-related complications including acute pancreatitis (n = 6) and bleeding (n=6). Four patients had a mild and transient pancreatitis (pain improvement after 2 days), 2 had severe pancreatitis that was reversible after 7 days of conservative treatment. In 4 cases, a blood transfusion (each with 2 erythrocyte concentrates) became necessary. Perforations and other severe procedure-related deaths did not occur.

CONCLUSIONS

Transpancreatic precut sphincterotomy using a soft guide wire is a safe and effective procedure in patients with difficult bile duct access where classic sphincterotomy or needle-knife procedures fail.

Initial experience of transnasal endoscopic biliary drainage without conscious sedation for the treatment of acute cholangitis (with video)

BACKGROUND

Endoscopic biliary drainage has been established as providing effective treatment for acute obstructive jaundice and cholangitis. A recently developed ultrathin transnasal videoendoscope is less invasive, even for patients who were critically ill, and can be performed without conscious sedation.

OBJECTIVE

To evaluate the clinical efficacy and safety of biliary drainage (BD) by using transnasal videoendoscopy (TNE) without conscious sedation.

DESIGN

Case series.

SETTING

This procedure was performed at Tokyo Medical University Hospital.

PATIENTS

Three patients with bile-duct stones and acute cholangitis and with a previous biliary endoscopic sphincterotomy (ES) were included in this study.

INTERVENTION

All patients underwent BD by using a front-viewing TNE. Two 5F stents were placed into the bile duct across the major papilla.

MAIN OUTCOME MEASUREMENT

The efficacy and safety of the TNE technique.

RESULTS

Transnasal insertion of a TNE endoscope was feasible in all patients, without epistaxis. TNE BD was achieved in all patients. Abdominal pain, fever, and jaundice improved 24 hours after the procedure in all patients. Despite the absence of intravenous conscious sedation, all patients would agree to undergo the procedure again, if necessary.

LIMITATIONS

Maneuverability of the TNE endoscope; limited to patients with a previous ES.

CONCLUSIONS

In this small series, unsedated TNE can be used to successfully drain the biliary system in patients with a previous ES. Additional studies to validate this hypothesis are needed.

Cholangitis: Analysis of Admission Prognostic Indicators and Outcomes

Acute cholangitis is a life-threatening complication of biliary obstruction that is exacerbated by delays in diagnosis and treatment. Since the introduction of endoscopic retrograde cholangiography and endoscopic therapeutic modalities, few investigations have addressed admission prognostic indicators of adverse outcomes. A retrospective review of all patients with a diagnosis of acute cholangitis from 1995 to 2005 was performed. Primary endpoints were organ failure and death. One-hundred and seventeen patients met criteria for acute cholangitis. Only 49 (42%) had Charcot's triad and 3 (3%) had Reynolds’ pentad. One-hundred and four (89%) patients underwent biliary decompression, of which 79 (76%) were treated by endoscopic methods. There were 29 (25%) cases of organ failure and 9 (8%) deaths. The admission white blood cell (WBC) count ( P = 0.0003) and total bilirubin (TBili) ( P = 0.04) were statistically significant predictors of organ failure or death. With an admission of WBC ≥ 20,000 cells/mm3, the sensitivity, specificity, positive predictive value, and negative predictive value for organ failure and death were 50 per cent, 92 per cent, 63 per cent, and 88 per cent, respectively. A TBili of ≥10 mg/dL had sensitivity, specificity, positive predictive value, and negative predictive value of 56 per cent, 85 per cent, 21 per cent, and 96 per cent, respectively for predicting death. Admission WBC ≥ 20,000 cells/mm3 and TBili ≥ 10 mg/dL are selective predictors of adverse outcomes in acute cholangitis.

Risk factors for acute suppurative cholangitis caused by bile duct stones

OBJECTIVE

Acute suppurative cholangitis is fatal unless adequate biliary drainage is obtained in a timely manner. The major cause of acute suppurative cholangitis is bile duct stones, but it is not known which patients with bile duct stones are likely to develop acute suppurative cholangitis.

METHODS

Between May 1994 and December 2005, 343 consecutive patients with bile duct stones were referred to our department. Of these, 38 patients presented with acute suppurative cholangitis. A nasobiliary catheter or biliary stent was emergently inserted endoscopically to control acute suppurative cholangitis in those patients. Risk factors for the development of acute suppurative cholangitis in the 343 patients were investigated using univariate and multivariate analyses.

RESULTS

A nasobiliary catheter or stent was inserted endoscopically in all 38 patients with acute suppurative cholangitis. Although biliary drainage was considered to be effective in all patients, two patients (5.3%) died of deteriorating comorbid diseases despite subsiding cholangitis. In the univariate analysis, age >or=70 years, neurological disease, and peripapillary diverticulum were identified as risk factors for the development of acute suppurative cholangitis. In the multivariate analysis, these three factors remained significant.

CONCLUSIONS

Advanced age, comorbid neurological disease, and peripapillary diverticulum were identified as independent risk factors for the development of acute suppurative cholangitis in patients with bile duct stones.

Management of ascending cholangitis

Acute ascending cholangitis is a potential life-threatening emergency characterized by infection and obstruction of the biliary tree. This article reviews the pathogenesis and clinical approach to patients with ascending cholangitis and examines the literature on this topic.

Methods and timing of biliary drainage for acute cholangitis: Tokyo Guidelines

Biliary drainage is a radical method to relieve cholestasis, a cause of acute cholangitis, and takes a central part in the treatment of acute cholangitis. Emergent drainage is essential for severe cases, whereas patients with moderate and mild disease should also receive drainage as soon as possible if they do not respond to conservative treatment, and their condition has not improved. Biliary drainage can be achieved via three different routes/procedures: endoscopic, percutaneous transhepatic, and open methods. The clinical value of both endoscopic and percutaneous transhepatic drainage is well known. Endoscopic drainage is associated with a low morbidity rate and shorter duration of hospitalization; therefore, this approach is advocated whenever it is applicable. In endoscopic drainage, either endoscopic nasobiliary drainage (ENBD) or tube stent placement can be used. There is no significant difference in the success rate, effectiveness, and morbidity between the two procedures. The decision to perform endoscopic sphincterotomy (EST) is made based on the patient's condition and the number and diameter of common bile duct stones. Open drainage, on the other hand, should be applied only in patients for whom endoscopic or percutaneous transhepatic drainage is contraindicated or has not been successfully performed. Cholecystectomy is recommended in patients with gallbladder stones, following the resolution of acute cholangitis with medical treatment, unless the patient has poor operative risk factors or declines surgery.

Endoscopic management of acute cholangitis in elderly patients

AIM: To evaluate clinical presentation, etiology, compli-cations and response to treatment in elderly patients with acute cholangitis.

METHODS: Demographics, etiology of biliary obstruc-tion, clinical features, complications and associated systemic diseases of 175 patients with acute cholangitis were recorded. Endoscopic biliary drainage was performed using nasobiliary drain or stent. The complications related to ERCP, success of biliary drainage, morbidity, mortality and length of hospital stay were evaluated.

RESULTS: Of 175 patients, 52 aged ≥ 60 years (groupI, age < 60 years; group II, age ≥ 60 years) and 105 were men. Fever was present in 38 of 52 patients of group II compared to 120 of 123 in groupI. High fever (fever ≥ 38.0°C) was more common in groupI(118/120 vs 18/38). Hypotension (5/123 vs 13/52), altered sensorium (3/123 vs 19/52), peritonism (22/123 vs 14/52), renal failure (5/123 vs 14/52) and associated comorbid diseases (4/123 vs 21/52) were more common in group II. Biliopancreatic malignancy was a common cause of biliary obstruction in group II (n = 34) and benign diseases in groupI(n = 120). Indications for biliary drainage were any one of the following either singly or in combination: a fever of ≥ 38.0°C (n = 136), hypotension (n = 18), peritonism (n = 36), altered sensorium (n = 22), and failure to improve within 72 h of conservative management (n = 22). High grade fever was more common indication of biliary drainage in groupIand hypotension, altered sensorium, peritonism and failure to improve within 72 h of conservative management were more common indications in group II. Endoscopic biliary drainage was achieved in 172 patients (nasobiliary drain: 56 groupI, 24 group II, stent: 64 groupI, 28 group II) without any significant age related difference in the success rate. Abdominal pain, fever, jaundice, hypotension, altered sensorium, peritonism and renal failure improved after median time of 5 d in 120 patients in groupI(2-15 d) compared to 10 d in 47 patients of group II (3-20 d). Normalization of leucocyte count was seen after a median time of 7 d (3-20 d) in 120 patients in groupIcompared to 15 d (5-26 d) in 47 patients in group II. There were no ERCP related complications in either group. Five patients (carcinoma gallbladder n = 3, CBD stones n = 2) died in group II and they had undergone biliary drainage after failure of response to conservative management for 72 h. There was a higher mortality in patients in group II despite successful biliary drainage (0/120 vs 5 /52). Length of hospital stay was longer in group II patients (16.4 ± 5.6, 7-30 d) than in groupIpatients (8.2 ± 2.4, 7-20 d).

CONCLUSION: Elderly patients with acute cholangitis have a high incidence of severe cholangitis, concomitant medical illnesses, hypotension, altered sensorium, peritonism, renal failure and higher mortality even after successful biliary drainage.

Predictors for emergency biliary decompression in acute cholangitis

OBJECTIVE

Medical treatment is the first-line management in patients with acute cholangitis but those who fail to respond to antibiotic treatment need urgent biliary decompression. Early prediction of patients with acute cholangitis who require urgent biliary drainage is important because this group of patients has a higher morbidity and mortality from this pathology. This study was undertaken to identify early predictors for emergency biliary decompression in patients with acute cholangitis.

METHODS

This is a retrospective analysis of a prospective database of 171 consecutive patients with acute cholangitis managed in a regional hospital in Hong Kong. Emergency biliary drainage was performed when conservative treatment failed. Twenty-four variables that could be assessed upon admission were analyzed for the prediction of the need for emergency biliary decompression.

RESULTS

Thirty-one (18.1%) patients needed emergency biliary drainage. Older age (P=0.001), habit of chronic smoking (P=0.04), prolonged prothrombin time (P=0.025), higher blood glucose level (P=0.002), and dilated common bile duct diameter on ultrasonography (P=0.047) predicted the need for urgent biliary drainage. Patients aged older than 75 years had a significantly higher chance of failure of conservative treatment than those aged 75 years or less (26.5% versus 10.2%, P=0.005).

CONCLUSIONS

Biliary drainage should be considered early in cholangitic patients aged older than 75 years and/or chronic smoking because they are less likely to respond to conservative treatment. Further studies are required to confirm that the outcome of patients with acute cholangitis can be improved by this selective approach.

Approach to the patient who has suspected acute bacterial cholangitis

Table 4 gives summary recommendations concerning the major decisions that are related to the diagnosis and management of suspected acute bacterial cholangitis. All of these decisions have to be made within the context of disease severity, degree of diagnostic uncertainty, and associated comorbidity. Although these recommendations are based on evidence, there are few randomized controlled trials. Antibiotics that cover gram negatives and anaerobes, along with fluid and electrolyte correction, frequently stabilize the patient. Imaging studies frequently confirm the diagnosis and identify the location and etiology of the obstruction. With or without a definitive diagnosis, ERCP or PTC can be done emergently to establish drainage to control sepsis. Although endoscopic and percutaneous drainage techniques have lower morbidity and mortality than does emergent surgical decompression, optimal management of this potentially life-threatening condition requires close cooperation between the gastroenterologist, radiologist, and surgeon.

Endoscopic biliary drainage for severe acute cholangitis in biliary obstruction as a result of malignant and benign diseases

BACKGROUND AND AIMS

Endoscopic biliary drainage is an established mode of biliary decompression in patients with acute cholangitis as a result of biliary obstruction secondary to stones and benign strictures. However, there are no reports on endoscopic management of severe acute cholangitis caused by malignant conditions. We prospectively compared the efficacy of the endoscopic drainage for severe acute cholangitis in biliary obstruction as a result of malignant and benign diseases.

METHODS

Forty-three patients with severe acute cholangitis requiring urgent biliary drainage were included. Sixteen patients (mean age 58.2 +/- 9.3 years; seven men, nine women) had biliary obstruction as a result of malignant diseases and 27 had benign biliary diseases (mean age 41.6 +/- 14.3 years; nine men, 18 women). Indications for urgent drainage included any one of the following: temperature >38 degrees C (n = 21), septic shock with systolic blood pressure <100 mmHg (n = 9), localized peritonism (n = 21), impaired consciousness (n = 6) and failure to improve within 72 h of conservative management (n = 13). After successful bile duct cannul degrees ation, patients received either a nasobiliary catheter (n = 38) or an in-dwelling stent (n = 5) with or without sphincterotomy for biliary drainage. Outcome measures included complications and clinical response.

RESULTS

Endoscopic drainage was established successfully in all the patients in both the groups. Clinical improvement after biliary drainage occurred in 94% patients (15/16) in the malignant group compared with 96% patients (26/27) in the benign group (P = not significant [NS]). Fever subsided at a median of 2.2 days in the malignant group and at 1 day in the benign group (P = NS). Normalization of leukocyte count was seen at a median of 6 days (range 1-17) and 2 days (range 1-5) days in the malignant group and the the benign group, respectively (P = NS). There were no endoscopic retrograde cholangiopancreatography-related complications. The mortality rate as a result of cholangitis was 4.6%, that is two of 43 patients (6.2% of the malignant group vs 3.7% of the benign group; P = NS).

CONCLUSIONS

Endoscopic biliary drainage is equally effective in patients with severe acute cholangitis caused by either malignant or benign biliary diseases.

Outcome of emergency ERCP for acute cholangitis in patients 90 years of age and older

BACKGROUND

An increasing proportion of the general population across the Western World now survives to an advanced age. However, there is limited data on the outcome of therapeutic endoscopic retrograde cholangiopancreatography in patients above 90 years of age with severe acute cholangitis.

AIM

To determine the relative frequency of postendoscopic retrograde cholangiopancreatography complication in this group of patients.

METHODS

The postendoscopic retrograde cholangiopancreatography complications related outcome of 64 patients aged 90 years and above (Group 1) with severe acute cholangitis were retrospectively compared with 165 patients under the age of 90 years (Group 2).

RESULTS

The postendoscopic retrograde cholangiopancreatography complication rate was 4.7% (three patients) in Group 1 and 7.3% (12 patients) in Group 2. There was no significant difference in the postendoscopic retrograde cholangiopancreatography complication rate between the two groups (P = 0.567). The relative frequency of 30-day mortality was 7.8% (five patients) in Group 1 and 4.2% (seven patients) in Group 2 (P = 0.227).

CONCLUSION

Urgent biliary decompression with endoscopic retrograde cholangiopancreatography in patients 90 years of age and older with severe acute cholangitis is a safe and effective procedure in the hands of highly skilled endoscopists and is not associated with increased morbidity or mortality even in this group of high risk patients.

Diagnosis and management of cholecystitis and cholangitis

Cholelithiasis is a prevalent condition in Western populations. Most cases are asymptomatic but complications can occur. Acute cholangitis, cholecystitis, and gallstone pancreatitis are the most common biliary tract emergencies and are usually caused by biliary calculi. Whenever possible, acute cholecystitis should be treated with early LC. AAC is an uncommon condition usually affecting patients with significant comorbidities. Treatment is usually with percutaneous cholecystostomy, which often is also the only required therapy. Endoscopic drainage is the preferred form of biliary decompression in acute cholangitis and these patients should subsequently undergo elective LC unless unfit for surgery. Effective and optimal management of biliary tract emergencies relies on close cooperation between gastroenterologist, surgeon, and radiologist.

Does the addition of endoscopic sphincterotomy to stent insertion improve drainage of the bile duct in acute suppurative cholangitis?

BACKGROUND

The treatment of patients with bile duct stones and acute suppurative cholangitis is emergent biliary decompression either by endoscopic sphincterotomy, nasobiliary drainage, or stent insertion. The aim of this retrospective study was to determine whether endoscopic sphincterotomy, in addition to an internal endoprosthesis, improves outcome for patients with acute suppurative cholangitis.

METHODS

A total of 74 patients with acute suppurative cholangitis and bile duct stones were included in the study; 37 had endoscopic sphincterotomy before insertion of plastic stent (Group 1), and 37 had a plastic stent inserted through an intact papilla (Group 2).

RESULTS

The success rates for stent insertion in Groups 1 and 2 were, respectively, 89.2% and 86.5% (p = 1.000). The complication rates in Group 1 and Group 2 were, respectively, 10.8% and 2.7% (p = 0.358). The median (interquartile range 25th-75th percentile) durations of hospital stay for patients in Group 1 and Group 2 were, respectively, 6.5 (4-11) days and 7 (5-12) days (p = 0.614). The median (interquartile range) lengths of time for resolution of jaundice in Group 1 and Group 2 were, respectively, 3 (2-6) days versus 4 (2-5) days (p = 0.981).

CONCLUSIONS

Endoscopic sphincterotomy, in addition to biliary stent insertion, is not required for successful biliary decompression in patients with severe acute cholangitis.

Outcomes of emergency common bile duct exploration: impact of preoperative endoscopic decompression

BACKGROUND

Emergency common bile duct exploration (CBDE) is still required in patients acutely ill with complicated biliary tract stone disease when endoscopic decompression fails to reverse their condition. This study looks at the clinical profile of patients requiring emergency CBDE and examines the various factors influencing the postoperative outcome.

METHODS

Clinical records of patients with emergency CBDE in Singapore General Hospital from January 1991 to December 1998 were reviewed. Factors influencing postoperative outcomes, for example, pre-existing medical problems, hepatic parameters, the impact of endoscopic procedures (if any) and indications for surgery, were correlated with postoperative morbidity and 30-day mortality.

RESULTS

The records of 100 patients were available for review. Major indications for emergency CBDE were cholangitis (51%) and intraoperative findings of common bile duct obstruction during emergency laparotomy (23%). Six patients had emergency CBDE because of iatrogenic complication of attempted therapeutic endoscopic retrograde cholangiopancreaticography (ERCP) for biliary stones. Overall mortality was 14.0% and 8.0% had retained stones. Mortality was significantly influenced by age, prior biliary disease, preoperative endoscopic biliary decompression in acute cholangitis (33.3%vs 9.4%, P = 0.035) and endoscopic complications.

CONCLUSIONS

Among patients requiring emergency CBDE, uncomplicated preoperative endoscopic biliary decompression benefits patients with acute cholangitis.

Biliary decompression by nasobiliary catheter or biliary stent in acute suppurative cholangitis: a prospective randomized trial

BACKGROUND

Endoscopic drainage has replaced emergent surgery for biliary decompression in patients with acute cholangitis. The aim of this study was to prospectively compare the efficacy of the nasobiliary catheter and indwelling stent as temporary measures for biliary decompression in acute suppurative cholangitis caused by bile duct stones.

METHODS

Over a 60-month period, 79 patients with acute cholangitis who required emergent endoscopic drainage were recruited. Indications for urgent drainage included any one of the following: temperature greater than 39 degrees C, septic shock with systolic blood pressure less than 90 mm Hg, increasing abdominal pain, and impaired level of consciousness. Patients who had previously undergone sphincterotomy or had coexisting intrahepatic duct stones were excluded. After successful bile duct cannulation, patients were randomized to receive either a nasobiliary catheter or indwelling stent without sphincterotomy for biliary decompression. Outcome measures included procedure time, complications, clinical response, and patient discomfort (scored with a 10-cm, unscaled visual analog score).

RESULTS

Of the 79 patients, 5 were excluded because of previous sphincterotomy and intrahepatic duct stones, 40 were randomized to receive a nasobiliary catheter (NBC group), and 34 to receive indwelling stent (stent group). Demographic data were similar between the groups. All procedures were successful in the NBC group; there was one failure in the stent group. The mean (SD) procedure time was similar (NBC group 14.0 [9.3] minutes vs. stent group 11.4 [7.2] min). There were 2 ERCP-related complications in the NBC group. Four patients pulled out the nasobiliary catheter and one catheter became kinked. One stent occluded. There was a significantly lower mean (SD) patient discomfort score on day 1 after the procedure in the stent group (stent group 1.8 [2.6] vs. NBC group 3.9 [2.7]; p = 0.02 t test). The overall mortality rate was 6.8% (2.5% NBC group vs. 12% stent group).

CONCLUSION

Endoscopic biliary decompression by nasobiliary catheter or indwelling stent was equally effective for patients with acute suppurative cholangitis caused by bile duct stones. The indwelling stent was associated with less postprocedure discomfort and avoided the potential problem of inadvertent removal of the nasobiliary catheter.

A randomised controlled trial of endoscopic sphincterotomy in acute cholangitis without common bile duct stones

BACKGROUND

Biliary decompression with endoscopic sphincterotomy (EPT) is beneficial in patients with biliary obstruction due to common bile duct (CBD) stones. However, it is not known whether EPT with decompression of the bile duct is beneficial in patients with acute cholangitis and gall bladder stones but without evidence of CBD stones.

AIM

A randomised controlled study to assess the effect of EPT on the outcome of patients suffering from acute cholangitis with gall bladder stones but with no CBD stones on initial endoscopic retrograde cholangiopancreatography.

PATIENTS

A total of 111 patients were recruited into the study.

METHODS AND RESULTS

Fifty patients were randomised to receive EPT while 61 patients received no endoscopic intervention. There was a significant difference in the duration of fever in the EPT and non-EPT groups (mean (SD): 3.2 (2.2) days v 4.3 (2.1) days; p<0.001). Duration of hospital stay was also shorter in the EPT group than in the non-EPT group (mean (SD): 8.1 (3.0) v 9.1 (3.2) days; p=0.04). Patients were followed up for a mean (SD) of 42.4 (11.1) months. Twenty three patients (20.3%) developed recurrent acute cholangitis (RAC): 14 patients (12.6%) in the EPT group and nine patients (8.1%) in the non-EPT group (p=0.09).

CONCLUSION

EPT in patients with acute cholangitis without CBD stones decreased the duration of acute cholangitis and reduced hospital stay but it did not decrease the incidence of RAC.

Role of cholecystectomy in preventing recurrent cholangitis

BACKGROUND

Whether cholecystectomy should be performed after an episode of acute cholangitis is still unresolved. The purpose of this study was to analyze the role of elective cholecystectomy in preventing recurrent acute cholangitis in Asian patients.

METHODS

Two hundred ten consecutive Asian patients with acute cholangitis caused by choledocholithiasis with coexisting cholelithiasis were studied prospectively.

RESULTS

Forty-one patients (19.5%, Group 1) agreed to elective cholecystectomy whereas 169 patients (80.5%, Group 2) did not. Mean (+/- SEM) follow-up for Groups 1 and 2 were, respectively, 110.2 +/- 6.6 and 96.8 +/- 2.9 months. Endoscopic papillotomy was performed in 120 patients, 22 (53.7%) in Group 1 and 98 (58%) in Group 2. Recurrent acute cholangitis developed in 31 patients (14.8%), 9 in Group 1 and 22 in Group 2. There was no significant difference in the Kaplan-Meier estimates of the cumulative probability of occurrence of recurrent acute cholangitis between the 2 groups (p = 0.90). Recurrent acute cholangitis developed in 10 patients (8.3%) who underwent endoscopic papillotomy and in 21 (23.3%) patients who did not. There was a significant difference in the Kaplan-Meier estimates of the cumulative probability of occurrence of recurrent acute cholangitis between the patients with endoscopic papillotomy versus those without endoscopic papillotomy (p = 0.001).

CONCLUSION

Cholecystectomy did not prevent recurrent acute cholangitis in Asian patients. In these patients, early endoscopic papillotomy lowered the frequency of recurrent acute cholangitis.

Gallstone cholangitis: a 10-year experience of combined endoscopic and laparoscopic treatment

BACKGROUND

To date, no procedure has yet been identified as the gold standard for the treatment of gallstone cholangitis in the laparoscopic era.

METHODS

The data of 109 consecutive patients with acute cholangitis were prospectively entered into a computerized database. All patients were managed according to a standard protocol. The main treatments were endoscopic retrograde cholangiography (ERC) combined with endoscopic sphincterotomy (ES), followed by interval laparoscopic cholecystectomy (LC). Patients in whom ERC or endoscopic stone clearance failed were managed by emergency open common bile duct exploration. LC was performed with a standardized four-cannula technique. The mean duration of surgery, conversion rate, and postoperative outcome of these patients were evaluated.

RESULTS

ERC was successful in 103 patients (94.5%). In five of these patients (4.8%), no bile duct stones were found. The 98 patients (95.2%) with common bile duct stones were referred for ES. The bile duct stones were successfully removed after ES in 93 cases (94.9%). The overall failure rate of ERC and ES for choledocholithiasis was 10.1%. Self-limiting pancreatitis occurred in four patients (4.3%). Overall, two of the 109 patients died (1.8%). After ES, 81 patients underwent LC. LC was performed successfully in 74 patients (91.3%). Conversion to open surgery was required in seven patients (8.7%). The morbidity rate after cholecystectomy was 7.4%; the morbidity rate after open bile duct exploration was 36.4% (p<0.05). Fifteen patients were managed conservatively after initial endoscopic management of their cholangitis. The overall incidence of recurrent biliary symptoms was significantly higher among patients with gallbladder in place than for patients who underwent cholecystectomy (38.5% vs 1.5%, p<0.001).

CONCLUSIONS

ES followed by LC is a safe and effective approach for the management of gallstone cholangitis; cholecystectomy should be performed in patients with gallstone cholangitis unless the operative risk is extremely high. These high operative risk patients and those who refuse surgery after ES should be warned that they are at high risk for recurrent biliary symptoms.

Acute cholangitis--predictive factors for emergency ERCP

BACKGROUND

Acute cholangitis varies in severity from a mild form to severe cases which require urgent biliary decompression.

AIM

This study was undertaken in order to develop a prognostic scoring system that can be used to predict which patients are likely to require emergency endoscopic retrograde cholangiopancreatogram (ERCP) upon admission.

METHODS

This is a prospective study of 142 consecutive patients with acute cholangitis. Emergency ERCP was performed in patients who did not respond to medical therapy.

RESULTS

Thirty-one patients (21.8%) required emergency ERCP. A maximum heart rate of more than 100/min, albumin of less than 30 g/L, bilirubin of more than 50 micromol/L and prothrombin time of more than 14 s on admission were associated with failure of medical treatment and the need for emergency ERCP (P=0.001, < 0.001, 0.006 and 0.004, respectively). By using these four factors in a scoring system, 50.7% of those with a score of one or more required emergency ERCP compared with 1.5% of those with none of the four risk factors (P < 0.001). This scoring system has a sensitivity of 96.8% and a specificity of 59.6%.

CONCLUSIONS

As patients with severe acute cholangitis show a higher mortality, we recommend that emergency ERCP be performed in patients with one or more of the four prognostic factors.

Bacterial Cholangitis

The treatment of acute bacterial cholangitis requires broad-spectrum antibiotics to cover against gram-negative aerobic enteric organisms (Escherichia coli, Klebsiella species, and Enterobacter species), gram-positive Enterococcus and anaerobic bacteria (Bacteroides fragilis and Clostridium perfringens). Approximately 20% of patients with acute cholangitis fail to respond to conservative treatment with antibiotic therapy and require urgent biliary decompression, which is the mainstay of therapy. This is best accomplished by endoscopic retrograde cholangiopancreatography (ERCP) and placement of a nasobiliary drainage tube or a large bore (10 F or larger) indwelling plastic stent. Alternative therapy includes percutaneous transhepatic biliary drainage or surgical biliary decompression, but these carry a significantly higher morbidity and mortality. Supportive care includes intravenous fluid hydration to prevent renal failure and close monitoring of vital signs for determination of potential septicemia.

Urgent endoscopic nasobiliary drainage without fluoroscopic guidance: A useful treatment for critically ill patients with biliary obstruction

BACKGROUND

Endoscopic nasobiliary drainage (ENBD) is routinely performed under fluoroscopic control. This is a report of our experience with urgent ENBD without fluoroscopic guidance in critically ill patients.

METHODS

Twenty-six critically ill patients who underwent urgent ENBD for biliary obstruction were analyzed. ENBD was performed without fluoroscopic control because of high risk of transportation or inaccessibility of the x-ray facilities. A pig-tailed nasobiliary catheter was inserted into the bile duct with the help of a guidewire under endoscopic control to bypass the site of obstruction. Successful placement was confirmed by free flow of bile on aspiration via the nasobiliary catheter.

RESULTS

A nasobiliary catheter was successfully placed in 23 patients (88%). Adequate bile drainage was achieved in 20 patients with an overall success rate of 77%. There were no procedure-related complications. The mortality rate for patients with successful biliary drainage was 10% (2 of 20), in contrast to 83% (5 of 6) for the group in which drainage was unsuccessful.

CONCLUSIONS

Urgent ENBD is effective for patients with biliary obstruction. With experience, this procedure may be successfully performed in critically ill patients without fluoroscopic guidance at primary care hospitals or intensive care units where fluoroscopic facilities are not readily available.

Effectiveness of ERCP in cholangitis: a community-based study

BACKGROUND

Although experts have demonstrated the efficacy of endoscopic retrograde cholangiopancreatography (ERCP) in cholangitis, the effectiveness of ERCP in unselected patients has not been measured. The aim was to investigate the clinical impact of ERCP performed at any time and of early ERCP (within 24 hours of admission) in patients with a primary discharge diagnosis of cholangitis.

METHODS

A retrospective record review of patients admitted to eight area hospitals with an International Classification of Diseases (ICD)-9 diagnosis consistent with cholangitis was performed. Extracted data included clinical characteristics, ERCP findings, and patient outcome. The associations of ERCP overall and early ERCP with length of stay were examined. Confounding factors including severity of illness, etiology of cholangitis, and hospital type were adjusted for in a multivariate analysis.

RESULTS

A total of 116 patients were studied. ERCP was performed in 71 patients with endoscopic therapy administered in 57 (80%). ERCP overall was not associated with any change in length of hospital stay. However, compared with other invasive biliary procedures, ERCP was associated with a shorter hospital stay (median 5 vs. 9.5 days, p = 0.01) and a 36% (95% CI [5%, 57%]) reduction in severity-adjusted length of stay. Patients who had early ERCP had a significantly shorter hospital stay than those who had delayed ERCP (median 4 vs. 7 days, p < 0.005) and early ERCP was associated with a 34% (95% CI [11%, 48%]) reduction in severity-adjusted length of stay.

CONCLUSION

Early ERCP may be an effective strategy for shortening the length of stay in patients hospitalized with cholangitis.

Acute (ascending) cholangitis

Cholangitis is an infection of an obstructed biliary system, most commonly due to common bile duct stones. Bacteria reach the biliary system either by ascent from the intestine or by the portal venous system. Once the biliary system is colonized, biliary stasis allows bacterial multiplication, and increased biliary pressures enable the bacteria to penetrate cellular barriers and enter the bloodstream. Patients with cholangitis are febrile, often have abdominal pain, and are jaundiced. A minority of patients present in shock with hypotension and altered mentation. There is usually a leukocytosis, and the alkaline phosphatase and bilirubin levels are generally elevated. Noninvasive diagnostic techniques include sonography, which is the recommended initial imaging modality. Standard CT, helical CT cholangiography, and magnetic resonance cholangiography often add important information regarding the type and level of obstruction. Endoscopic sonography is a more invasive means of obtaining high-quality imaging, and endoscopic or percutaneous cholangiography offers the opportunity to perform a therapeutic procedure at the time of diagnostic imaging. Endoscopic modalities currently are favored over percutaneous procedures because of a lower risk of complication. Treatment includes fluid resuscitation and antimicrobial agents that cover enteric flora. Biliary decompression is required when patients do not rapidly respond to conservative therapy. Definitive therapy can be performed by a surgical, percutaneous, or endoscopic route; the last is favored because it is the least invasive and has the lowest complication rate. Overall prognosis depends on the severity of the illness at the time of presentation and the cause of the biliary obstruction.

Aeromonas infection in acute suppurative cholangitis: review of 30 cases

OBJECTIVES

Aeromonads, though not common pathogens in biliary sepsis, caused substantial mortality in patients with impaired hepatobiliary function. Our aim was to study the pathogenic role of Aeromonas in acute suppurative cholangitis.

METHODS

Between 1996 and 1998, the medical records of patients with a diagnosis of biliary sepsis were reviewed. Those who fulfilled the diagnostic criteria for acute suppurative cholangitis and had positive bile or blood cultures for Aeromonas species were studied.

RESULTS

One thousand and forty-five patients were confirmed to have acute suppurative cholangitis. Of these, 30 patients (2.9%) had Aeromonas species isolated from bile; four were complicated by aeromonas septicaemia with simultaneous recovery of the bacteria from blood. All except two isolates were A. hydrophila. Twenty-four patients (80%) had bile duct stones, four (13%) had cholangiocarcinoma and two (7%) pancreatic cancer. Twenty-five cases (83%) had previous exploration of the biliary tract. There was substantial resistance to piperacillin (58%), ceftazidime (30%) and imipenem (15%). Most patients improved after biliary decompression. Only three patients (10%) died, two had terminal malignancy and one had end-stage liver failure. No excess mortality was attributable to Aeromonas infection in biliary sepsis.

CONCLUSIONS

Previous instrumentation facilitated ascending Aeromonas infection of the biliary tract from the gastrointestinal tract. Unlike early reports, our results showed that aeromonads did not adversely affect the clinical outcome of acute suppurative cholangitis with successful drainage of biliary obstruction.

The benefits of endoscopic nasobiliary drainage without sphincterotomy for acute cholangitis

OBJECTIVE

Endoscopic nasobiliary drainage for acute cholangitis is performed with or without endoscopic sphincterotomy. However, sphincterotomy carries a small but important risk of complications. We evaluated the benefits of endoscopic nasobiliary drainage without sphincterotomy for acute cholangitis.

METHODS

A total of 166 patients underwent endoscopic nasobiliary drainage with sphincterotomy (73 patients, sphincterotomy group) or without (93 patients, nonsphincterotomy group). The indications were acute cholangitis due to choledocholithiasis (120 patients) or benign (10 patients) or malignant (36 patients) biliary stricture. Patient backgrounds were similar in the two groups. The outcomes of nasobiliary drainage were compared between the groups.

RESULTS

Nasobiliary drainage was successful in 69 patients (95%) in the sphincterotomy group and in 89 (96%) in the nonsphincterotomy group. Efficient drainage was achieved in 67 patients (92%) in the sphincterotomy group and in 87 (94%) in the nonsphincterotomy group. Procedure-related complications developed in eight sphincterotomy-group patients (hemorrhage in three, acute cholecystitis in three, acute pancreatitis in one, catheter withdrawal in one) and in two nonsphincterotomy patients (pancreatitis in one, catheter withdrawal in one) (11% vs 2%; p < 0.05). There were no deaths.

CONCLUSIONS

Endoscopic nasobiliary drainage without endoscopic sphincterotomy is a simple, safe, and effective treatment for acute cholangitis. This procedure is especially useful for critically ill patients and those with coagulopathy.

Endoscopic ultrasonography versus cholangiography for the diagnosis of choledocholithiasis

BACKGROUND

Choledocholithiasis is a major source of morbidity among patients undergoing cholecystectomy for symptomatic gallstones. There is no consensus on the best approach to diagnosing bile duct stones. We compared the safety, accuracy, diagnostic yield, and cost of EUS- and ERCP-based approaches.

METHODS

Sixty-four consecutive pre- and post-cholecystectomy patients referred for endoscopic retrograde cholangiopancreatography (ERCP) for suspected choledocholithiasis were prospectively evaluated in a blinded fashion. All were stratified into risk groups using predefined criteria. Endoscopic ultrasonography (EUS) and ERCP were sequentially performed by two endoscopists.

RESULTS

The success rates of EUS and ERCP were 98% and 94%, respectively. The accuracy of EUS for diagnosing choledocholithiasis was 94%. EUS provided an additional or alternative diagnosis to bile duct stones in 21% of patients. The complication rate of EUS was significantly lower than diagnostic ERCP. An EUS-based strategy costs less than diagnostic ERCP in patients with low, moderate, or intermediate risk.

CONCLUSIONS

EUS is comparably accurate, but safer and less costly than ERCP for evaluating patients with suspected choledocholithiasis. It is useful in patients with an increased risk of having common bile duct stones based on clinical criteria and those with contraindications for or prior unsuccessful ERCP. EUS may enable selective performance of ERCP and improve the cost-effectiveness of diagnosing choledocholithiasis.