Acute cholangitis: current concepts

Management of complex acute biliary disease for the general surgeon: A narrative review

Acute gallbladder diseases are a common surgical emergency faced by General Surgeons that can sometimes be quite challenging. These complex biliary diseases require multifaceted and expeditious care, optimized based on hospital facility and operating room (OR) resources and the expertise of the surgical team. Effective management of biliary emergencies requires two foundational principles: achieving source control while mitigating the risk of injury to the biliary tree and its blood supply. This review article highlights salient literature on seven complex biliary diseases: acute cholecystitis, cholangitis, Mirizzi syndrome, gallstone ileus with cholecystoenteric fistula, gallstone pancreatitis, gall bladder cancer, and post-cholecystectomy bile leak.

Proteomic analysis of serum extracellular vesicles from biliary tract infection patients to identify novel biomarkers

Biliary tract infection (BTI), a commonly occurring abdominal disease, despite being extensively studied for its initiation and underlying mechanisms, continues to pose a challenge in the quest for identifying specific diagnostic biomarkers. Extracellular vesicles (EVs), which emanate from diverse cell types, serve as minute biological entities that mirror unique physiological or pathological conditions. Despite their potential, there has been a relatively restricted exploration of EV-oriented methodologies for diagnosing BTI. To uncover potent protein biomarkers for BTI patients, we applied a label-free quantitative proteomic method known for its unbiased and high-throughput nature. Furthermore, 192 differentially expressed proteins surfaced within EVs isolated from individuals afflicted with BTI. Subsequent GO and KEGG analyses pinpointed Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) and Crumbs homolog 3 (CRB3) as noteworthy biomarkers. Validation via data analysis of plasma-derived EV samples confirmed their specificity to BTI. Our study leveraged an unbiased proteomic tool to unveil CEACAM1 and CRB3 as promising protein biomarkers in serum EVs, presenting potential avenues for the advancement of diagnostic systems for BTI detection.

The Use of Inflammatory Markers for Treatment Response Monitoring in Acute Cholangitis: A Retrospective Cohort Study

INTRODUCTION

In acute cholangitis (AC), monitoring treatment response to antimicrobial therapy allows for making timely decisions on early biliary decompression. The aims of this study were to compare the discriminating powers of traditional blood inflammatory markers and propose new inflammatory markers that have a better ability to distinguish between patients with and without biliary tract infection.

METHODS

This was a retrospective cohort study. Patients who underwent endoscopic retrograde cholangio-pancreaticography for AC and those without biliary tract inflammation were randomly selected in the 4:3 ratio of their hospital admissions from our hospital endoscopic retrograde cholangio-pancreaticography database. The exclusion criterion was the absence of C-reactive protein (CRP) measurements.

RESULTS

The discriminating powers of the neutrophil count, lymphocytes, albumin, neutrophil-to-lymphocyte ratio, and CRP were superior to that of white blood cell (P1 < 0.005; P2 = 0.004; P3 < 0.0005; P4 < 0.0005; P5 < 0.0005). In monitoring treatment response in AC, lymphocyte count, albumin, neutrophil-to-lymphocyte ratio, and CRP were better than neutrophil count (P6 = 0.037, P7 < 0.005, P8, 9 < 0.0005). The area under the receiver operating characteristic curve (AUC) of CRP was higher than the AUC for lymphocytes, 96% (95% confidence interval [CI]: 94-98%) versus 81% (95% CI: 76-86%) (P < 0.0005), and larger than the AUC for albumin, 88% (95% CI: 84-92%) (P < 0.0005), indicating a greater discriminating power of CRP. However, the discriminating power of CRP-to-lymphocyte ratio (CLR) was more than that for CRP (P = 0.006) but equal to CRP-to-(lymphocytes∗albumin) ratio (CLAR) (P = 0.249). The AUCs of CLR and CLAR were both 98% (95% CI: 96-99%).

CONCLUSIONS

CLR and CLAR have superior discriminating powers than traditional inflammatory markers used for monitoring treatment response in AC.

The Predictive Value of Different Laboratory Indicators Based on the 2018 Tokyo Guidelines for the Severity of Acute Cholangitis

BACKGROUND

This study evaluated the predictive value of different laboratory indicators for the severity of acute cholangitis (AC) according to the 2018 Tokyo Guidelines.

OBJECTIVES

We enrolled consecutive patients with a diagnosis of AC from June 2016 to May 2021. Serum procalcitonin (PCT) and C-reactive protein (CRP) levels, white blood cell counts, the neutrophil-lymphocyte ratio, and the platelet-lymphocyte ratio (PLR) were compared according to the severity of AC.

RESULTS

In total, 293 patients were enrolled in this study (mild, n = 172; moderate, n = 68; severe, n = 53). In receiver operating characteristic analyses, CRP was the best biomarker for differentiating mild and moderate AC (area under the curve [AUC] 0.66, 95% confidence interval [CI] 0.58-0.74). PCT was the best biomarker for differentiating mild and severe AC (AUC 0.80, 95% CI 0.74-0.86). Blood culture was performed in 117 patients (39.93%), 53 of whom (45.30%) had positive results. Regarding blood culture positivity, PLR was most predictive (AUC 0.85, 95% CI 0.78-0.92).

CONCLUSIONS

PCT can be used as a reliable predictor of severe AC. CRP was most predictive of moderate AC, whereas PLR was most predictive of blood culture positivity.

A New Nomogram for Predicting 30-Day In-Hospital Mortality Rate of Acute Cholangitis Patients in the Intensive Care Unit

Purpose

Acute cholangitis (AC) is a widespread acute inflammatory disease and the main cause of septic shock, which has a high death rate in hospitals. At present, the prediction models for short-term mortality of AC patients are still not ideal. We aimed at developing a new model that could forecast the short-term mortality rate of AC patients.

Methods

Data were extracted from the Medical Information Mart for Intensive Care IV version 2.0 (MIMIC-IV v2.0). There were a total of 506 cases of AC patients that were included. Patients were given a 7 : 3 split between the training set and the validation set after being randomly assigned to one of the groups. Multivariate logistic regression was used to create an AC patient predictive nomogram for 30-day mortality. The overall efficacy of the model is evaluated using the area under the receiver operating characteristic curve (AUC), the calibration curve, the net reclassification improvement (NRI), the integrated discrimination improvement (IDI), and a decision curve analysis (DCA).

Results

Out of 506 patients, 14.0% (71 patients) died. The training cohort had 354 patients, and the validation cohort had 152 patients. GCS, SPO2, albumin, AST/ALT, glucose, potassium, PTT, and peripheral vascular disease were the independent risk factors according to the multivariate analysis results. The newly established nomogram had better prediction performance than other common scoring systems (such as SOFA, OASIS, and SAPS II). For two cohorts, the calibration curve demonstrated coherence between the nomogram and the ideal observation (P  >  0.05). The clinical utility of the nomogram in both sets was revealed by decision curve analysis.

Conclusion

The novel prognostic model was effective in forecasting the 30-day mortality rate for acute cholangitis patients.

Application and usefulness of a new eight‐wire basket catheter for endoscopic extraction of small common bile duct stones: A retrospective multicenter study

Objectives

Distally located small common bile duct stones are often difficult to treat or grasp endoscopically. Therefore, multiple devices, such as baskets or balloon catheters, are frequently used in such cases. However, it is desirable to use a single device for stone extraction from the perspective of cost‐effectiveness. In this multicenter study, we evaluated the efficacy of a new eight‐wire basket catheter for extracting small (≤10 mm) common bile duct stones.

Methods

We retrospectively analyzed the records of 144 patients who underwent stone extraction using the eight‐wire basket catheter for common bile duct stones ≤10 mm. The success rate of complete stone extraction and the risk factors for the difficulty in stone extraction with the eight‐wire catheter alone were mainly evaluated.

Results

The success rate of stone extraction with the eight‐wire catheter alone was 86.1%. The final rate of complete stone extraction was 98.0%. The mean of the maximum diameter of the common bile duct and the largest stone dimension were 10.5 ± 3.5, and 5.1 ± 2.1 mm, respectively. Common bile duct diameter ≥12 mm and stone diameter ≥6 mm were identified as independent risk factors for the difficulty in stone extraction with the eight‐wire catheter alone.

Conclusions

The success rate of the new eight‐wire basket for small common bile duct stone extraction was acceptable. The device is beneficial and could be used from the start for the extraction of small stones < 6 mm.

Bile duct penetrating duodenal wall sign: a novel computed tomography finding of common bile duct stone impaction into duodenal major papilla

PURPOSE

Impacted common bile duct stones cause severe acute cholangitis. However, the early and accurate diagnosis, especially iso-attenuating stone impaction, is still challenging. Therefore, we proposed and validated the bile duct penetrating duodenal wall sign (BPDS), which shows the common bile duct penetrating the duodenal wall on coronal reformatted computed tomography (CT), as a novel sign of stone impaction.

METHODS

Patients who underwent urgent endoscopic retrograde cholangiopancreatography (ERCP) for acute cholangitis due to common bile duct stones were retrospectively enrolled. Stone impaction was defined by endoscopic findings as a reference standard. Two abdominal radiologists blinded to clinical information interpreted CT images to record the presence of the BPDS. The diagnostic accuracy of the BPDS to diagnose stone impaction was analyzed. Clinical data related to the severity of acute cholangitis were compared between patients with and without the BPDS.

RESULTS

A total of 40 patients (mean age 70.6 years; 18 female) were enrolled. The BPDS was observed in 15 patients. Stone impaction occurred in 13/40 (32.5%) cases. Overall accuracy, sensitivity, and specificity were 34/40 (85.0%), 11/13 (84.6%), and 23/27 (85.2%), respectively; 14/16 (87.5%), 5/6 (83.3%), and 9/10 (90.0%) for iso-attenuating stones; and 20/24 (83.3%), 6/7 (85.7%), and 14/17 (82.4%) for high-attenuating stones. Interobserver agreement of the BPDS was substantial (κ = 0.68). In addition, the BPDS was significantly correlated with the number of factors in the systemic inflammatory response syndrome (P = 0.03) and total bilirubin (P = 0.04).

CONCLUSION

The BPDS was a unique CT imaging finding to identify common bile duct stone impaction regardless of stone attenuation with high accuracy.

Timing of biliary decompression for acute cholangitis

Severe acute cholangitis (AC) exacerbates the risk of death because of the rapid progression of the disease. The optimal timing of biliary decompression (BD) as a necessary intervention in patients with severe AC is controversial. A recently report titled “Timing of endoscopic retrograde cholangiopancreatography in the treatment of acute cholangitis of different severity” in the World Journal of Gastroenterology that the optimal time of endoscopic retrograde cholangiopancreatography for treating patients with severe AC is ≤ 48 but not ≤ 24 h, providing clinical evidence for selecting the optimal time for implementation of BD. Here, we discuss the controversy over the optimal timing of BD for AC based on guidelines and clinical evidence, and consider that more high-level clinical researches are urgent needed to benefit the management of patients with different severity of AC.

Impact of the Timing of Endoscopic Retrograde Cholangiopancreatography for the Treatment of Acute Cholangitis: A Meta-analysis and Systematic Review

BACKGROUND

The optimal timing for endoscopic retrograde cholangiopancreatography (ERCP) for acute cholangitis (AC) has not been unequivocally established.

AIMS

To perform a meta-analysis of the outcomes associated with particular timings of ERCP for AC.

METHODS

A systematic literature search was conducted for studies of ERCP for AC, and then a meta-analysis of the in-hospital mortality (IHM), 30-day mortality, and length of hospital stay (LHS) was performed.

RESULTS

Seven non-randomized studies of 88,562 patients were considered appropriate for inclusion. Compared with performing ERCP more than 24 hours after admission, ERCP within 24 hours was associated with lower IHM ( P <0.0004), but no difference in 30-day mortality ( P =0.38) was found between the 2 groups. ERCP performed <48 hours after admission was associated with a lower IHM and 30-day mortality ( P <0.00001 and P =0.03) than ERCP performed >48 hours after admission. In addition, ERCP performed within 24 or 48 hours was associated with a shorter LHS ( P <0.00001 and P <0.00001, respectively).

CONCLUSION

ERCP within 48 hours of admission is superior to subsequent ERCP with respect to IHM, 30-day mortality, and LHS, and ERCP performed within 24 hours is associated with lower IHM and LHS.

Mirizzi SD caused a rare case of Angiocholitis ictero-uremigene with shock septic: Case report and review of literature

Introduction

Mirizzi syndrome is an obstructive jaundice caused by extrinsic compression of the common bile duct by a stone embedded in the cystic duct [1].

Cholangitis is a diagnostic and therapeutic emergency whose main risk is that of septic shock [1]. It can also progress to “Ictero-Uremigenic Angiocholitis” associated with sometimes extremely serious renal failure [2].

Case presentation

We reported the case of a 73-year-old patient admitted to the emergency room with septic shock on severe cholangitis. Given the presence of acute febrile cholangitis with criteria of septic shock on the one hand and acute renal failure on the other hand, the diagnosis of ictero-uremigenic Angiocholitis was made.

Discussion

Angiocholitis is an inflammation and infection of the bile ducts, the etiologies of which are diverse, among them: Mirizzi's syndrome [1].

The anatomical basis of Mirizzi syndrome has generally been attributed to an abnormal relationship between the cystic duct and the common hepatic duct [3]. Angiocholitis constitutes a diagnostic and therapeutic emergency, its complications threaten the vital prognosis [4]. Ictero-uremigenic Angiocholitis where the septic component dominates represents a real picture of sepsis, cholestatic jaundice, oliguria with renal failure [2].

Conclusion

fortunately rare, but always to be feared, the ictero-uremigenic Angiocholitis produces a typical picture of Angiocholitis, accompanied by a serious septic shock which passes largely to the fore associating in a very short period of time an organic renal insufficiency [2], the Age over 70 is a serious factor, it constitutes a therapeutic emergency requiring desobstruction of the main bile duct and possibly recourse to hemodialysis [4].

•

Angiocholitis is a diagnostic and therapeutic emergency. The main risk is that of septic shock.

•

Angiocholitis can also develop into “ictero-uremogenic cholangitis”, associated with renal failure which is sometimes extremely serious.

•

Age Over 70 years is considered as a severity factor.

•

It constitutes a therapeutic emergency requiring disobstruction of the main bile duct and possibly recourse to hemodialysis.

Machine Learning Techniques Differentiate Alcohol-Associated Hepatitis From Acute Cholangitis in Patients With Systemic Inflammation and Elevated Liver Enzymes

OBJECTIVE

To develop machine learning algorithms (MLAs) that can differentiate patients with acute cholangitis (AC) and alcohol-associated hepatitis (AH) using simple laboratory variables.

METHODS

A study was conducted of 459 adult patients admitted to Mayo Clinic, Rochester, with AH (n=265) or AC (n=194) from January 1, 2010, to December 31, 2019. Ten laboratory variables (white blood cell count, hemoglobin, mean corpuscular volume, platelet count, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, total bilirubin, direct bilirubin, albumin) were collected as input variables. Eight supervised MLAs (decision tree, naive Bayes, logistic regression, k-nearest neighbor, support vector machine, artificial neural networks, random forest, gradient boosting) were trained and tested for classification of AC vs AH. External validation was performed with patients with AC (n=213) and AH (n=92) from the MIMIC-III database. A feature selection strategy was used to choose the best 5-variable combination. There were 143 physicians who took an online quiz to distinguish AC from AH using the same 10 laboratory variables alone.

RESULTS

The MLAs demonstrated excellent performances with accuracies up to 0.932 and area under the curve (AUC) up to 0.986. In external validation, the MLAs showed comparable accuracy up to 0.909 and AUC up to 0.970. Feature selection in terms of information-theoretic measures was effective, and the choice of the best 5-variable subset produced high performance with an AUC up to 0.994. Physicians did worse, with mean accuracy of 0.790.

CONCLUSION

Using a few routine laboratory variables, MLAs can differentiate patients with AC and AH and may serve valuable adjunctive roles in cases of diagnostic uncertainty.

Procalcitonin to Predict Severity of Acute Cholangitis and Need for Urgent Biliary Decompression: Systematic Scoping Review

Serum procalcitonin (PCT) has been reported as a potential biomarker to predict the severity of acute cholangitis (AC) or the need for urgent biliary decompression. This study aimed to identify and summarize the existing research about serum PCT and the severity of AC, and to find gaps towards which future studies can be targeted. Following the PRISMA extension for scoping reviews, MEDLINE, EMBASE, and Google Scholar were searched for all peer-reviewed articles with relevant keywords including "cholangitis" and "procalcitonin" from their inception to 13 July 2021. We identified six studies. All the studies employed a case-control design and aimed to evaluate the usefulness of serum PCT to predict the severity of AC with key identified outcomes. While the potential cut-off values of serum PCT for severe AC ranged from 1.8-3.1 ng/mL, studies used different severity criteria and the definition of urgent biliary decompression. No studies proposed cut-off PCT values for the need for urgent biliary decompression. This scoping review identified the current level of evidence regarding the usefulness of serum PCT in assessing the severity of AC. Further clinical research is warranted with a focus on standardized outcome measures employing prospective or experimental designs.

Cutting out Cholecystectomy on Index Hospitalization Leads to Increased Readmission Rates, Morbidity, Mortality and Cost

Biliary tract diseases that are not adequately treated on index hospitalization are linked to worse outcomes, including high readmission rates. Delays in care for conditions such as choledocholithiasis, gallstone pancreatitis, and cholecystitis often occur due to multiple reasons, and this delay is under-appreciated as a source of morbidity and mortality. Our study is based on the latest Nationwide Readmissions Database review and evaluated the effects of postponing definitive management to a subsequent visit. The study shows a higher 30-day readmission rate in addition to increased mortality rate, intubation rate, vasopressor use in this patient population and significantly added financial burden.

Ascending Cholangitis Caused by Methicillin-Resistant Staphylococcus aureus Species in a Patient With Cystic Fibrosis

Ascending cholangitis is a bacterial infection of the extra-hepatic biliary system and presents as a life-threatening systemic condition. Increased bacterial loads and biliary obstruction favor bacterial translocation into the vascular and lymphatic systems. Common organisms isolated are Escherichia Coli, Klebsiella, Enterococcus species, and Enterobacter species. Methicillin-resistant Staphylococcus aureus (MRSA) is a rare isolate in ascending cholangitis. We present a case of a 24-year-old patient with cystic fibrosis who presented with epigastric abdominal pain, low-grade fever, jaundice, dark urine, and nausea for two days. Initial workup revealed elevated liver enzymes, hyperbilirubinemia, leukocytosis, and an ultrasound which showed common bile duct dilation to 14 mm with choledocholithiasis. He underwent endoscopic retrograde cholangiopancreatography (ERCP) with stone extraction and bile fluid culture. Cultures grew out MRSA and the patient was treated with appropriate antibiotic therapy. The mainstay of therapy for ascending cholangitis is adequate hydration, antibiotics, and biliary decompression. Early recognition of the offending organism is critical in guiding therapy. Current guidelines focus on the empiric treatment of Gram-negative and anaerobic bacteria. Clinicians should be aware of the possibility of less common pathogens (such as MRSA), especially in a patient who is decompensating despite antibiotic therapy.

Role of Interventional Radiology in the Management of Acute Cholangitis

Acute cholangitis presents with a wide severity spectrum and can rapidly deteriorate from local infection to multiorgan failure and fatal sepsis. The pathophysiology, diagnosis, and general management principles will be discussed in this review article. The focus of this article will be on the role of biliary drainage performed by interventional radiology to manage acute cholangitis. There are specific scenarios where percutaneous drainage should be preferred over endoscopic drainage. Percutaneous transhepatic and transjejunal biliary drainage are both options available to interventional radiology. Additionally, interventional radiology is now able to manage these patients beyond providing acute biliary drainage including cholangioplasty, stenting, and percutaneous cholangioscopy/biopsy.

Modern imaging of cholangitis

Cholangitis refers to inflammation of the bile ducts with or without accompanying infection. When intermittent or persistent inflammation lasts 6 months or more, the condition is classified as chronic cholangitis. Otherwise, it is considered an acute cholangitis. Cholangitis can also be classified according to the inciting agent, e.g. complete mechanical obstruction, which is the leading cause of acute cholangitis, longstanding partial mechanical blockage, or immune-mediated bile duct damage that results in chronic cholangitis.The work-up for cholangitis is based upon medical history, clinical presentation, and initial laboratory tests. Whereas ultrasound is the first-line imaging modality used to identify bile duct dilatation in patients with colicky abdominal pain, cross-sectional imaging is preferable when symptoms cannot be primarily localised to the hepatobiliary system. CT is very useful in oncologic, trauma, or postoperative patients. Otherwise, magnetic resonance cholangiopancreatography is the method of choice to diagnose acute and chronic biliary disorders, providing an excellent anatomic overview and, if gadoxetic acid is injected, simultaneously delivering morphological and functional information about the hepatobiliary system. If brush cytology, biopsy, assessment of the prepapillary common bile duct, stricture dilatation, or stenting is necessary, then endoscopic ultrasound and/or retrograde cholangiography are performed. Finally, when the pathologic duct is inaccessible from the duodenum or stomach, percutaneous transhepatic cholangiography is an option. The pace of the work-up depends upon the severity of cholestasis on presentation. Whereas sepsis, hypotension, and/or Charcot's triad warrant immediate investigation and management, chronic cholestasis can be electively evaluated.This overview article will cover the common cholangitides, emphasising our clinical experience with the chronic cholestatic liver diseases.

First Schistosomal Cholecystitis Complicated by Cholangitis and Liver Abscess: Case Report and Review of Literature

Schistosomiasis is one of the most prevalent parasitic infections in the developing world. When it affects the gastrointestinal system specifically the liver, it causes periportal fibrosis followed by cirrhosis. Cholecystitis however is a rare presentation, and associated liver abscess has certainly never been reported to date. We report a case of acute cholecystitis complicated by cholangitis and liver abscess in a 46-year-old man. After complex course of treatment, he had laparoscopic cholecystectomy, and the histology report confirmed schistosomiasis. Gallbladder schistosomiasis is an uncommon disease that is associated with dense fibrotic changes that strongly mimics xanthogranulomatous cholecystitis. Liver abscess may occur during the disease evolution especially in patient originating from endemic backgrounds. We present the case and a comprehensive literature review.

Acute Cholangitis: Causes, Diagnosis, and Management

Acute cholangitis, also referred to as ascending cholangitis, is an infection of the biliary tree characterized by fever, jaundice, and abdominal pain, which in most cases is the consequence of biliary obstruction. Diagnosis is commonly made by the presence of clinical features, laboratory tests, and imaging studies. The treatment modalities include administration of intravenous fluids, antimicrobial therapy, and prompt drainage of the bile duct. Early diagnosis and treatment of acute cholangitis are crucial to prevent unwanted clinical outcome of the disease. This article provides an update on early diagnosis and management of acute cholangitis.

Timing of Performing Endoscopic Retrograde Cholangiopancreatography and Inpatient Mortality in Acute Cholangitis: A Systematic Review and Meta-Analysis

Although early biliary drainage improves outcomes in patients with acute cholangitis, the optimal time to perform endoscopic retrograde cholangiopancreatography (ERCP) is controversial. Our aim was to evaluate the impact of timing of ERCP on mortality in hospitalized patients with acute cholangitis.

Endoscopic Management of Pancreaticobiliary Disease

The evolution of advanced pancreaticobiliary endoscopy in the past 50 years is remarkable. Endoscopic retrograde cholangiopancreatography (ERCP) has progressed from a diagnostic test to an almost entirely therapeutic procedure. The endoscopist must have a clear understanding of the indications for ERCP to avoid unnecessary complications, including post-ERCP pancreatitis. Endoscopic ultrasound initially was used as a diagnostic tool but now is equipped with accessary channels allowing endoscopic ultrasound-guided interventions in various pancreaticobiliary conditions. This review discusses the endoscopic management of common pancreatic and biliary diseases along with the techniques, indications, outcomes, and complications of pancreaticobiliary endoscopy.

Role of cholangitis in predicting survival in patients with carcinoma of the ampulla of vater

BACKGROUND

There have been strong suggestions that acute inflammation promotes tumour growth, and has a tendency for increased invasiveness, leading to poor survival after surgery. When cholangitis coexists with ampulla of vater cancer, the patient's prognosis may be influenced by the acute inflammatory status of the bile duct. We evaluated the relationship between the severity of acute cholangitis, preoperative CRP levels and survival.

METHODS

We retrospectively analysed 154 patients who underwent surgical resection for AOV cancer between January 2003 and November 2018. Cholangitis was graded according to Tokyo Guidelines 2018. Patients were categorised into two groups based on their CRP levels: CRP > 1 mg/L and CRP ≤ 1 mg/L. Relationship of cholangitis grade and CRP >1 mg/L with survival was assessed.

RESULTS

The mean age of the patients was 65.8 years. Preoperative cholangitis was present in 40 (25.9%) patients, of which 28 (18.2%) had mild cholangitis, 11 (7.1%) had moderate cholangitis, and one (0.6%) had severe cholangitis. CRP was elevated preoperatively in 56 (36.4%) patients. The median follow-up period was 33.5 months. Severity of cholangitis significantly affected the overall survival (P < 0.001) and disease-free survival (P < 0.001). Patients with mild cholangitis had a median overall survival of 43 months compared to 14 months in those with moderate cholangitis. A preoperative CRP level of >1 mg/L was significantly associated with poor overall survival (P = 0.023) but not with disease-free survival (P = 0.128), although it was associated with a trend towards poorer survival. The survival rate of patients with CRP ≤1 mg/L was 77.4%, whereas that of patients with CRP >1 mg/L was 56.7%. In multivariable analysis, age >65 years (P = 0.015), cholangitis grade (P = 0.050), CRP > 1 mg/L (P = 0.045), venous invasion (P = 0.005), and perineural invasion (P = 0.034) were independent prognostic factors for overall survival while cholangitis grade (P = 0.049) and perineural invasion (P = 0.004) were independent prognostic factors for disease-free survival.

CONCLUSION

Acute inflammation when associated with cancer can have a negative effect on patient's survival. Patients with higher grades of cholangitis should be adequately treated to improve the inflammatory status.

Antibiotics for adults with acute cholecystitis or acute cholangitis or both

This is a protocol for a Cochrane Review (intervention). The objectives are as follows:

To assess the benefits and harms of antibiotics treatment versus placebo, no intervention, or another antibiotic for people with cholecystitis or cholangitis, or both.

Diagnostic inflammatory markers of acute cholangitis in liver transplant recipients

BACKGROUND

Acute cholangitis (AC) after liver transplantation occurs in 8-12% patients and remains a significant cause of patients' morbidity and mortality. The 2018 Tokyo guidelines use white blood cell count and C-reactive protein (CRP) as diagnostic criteria in AC. However, these and other common inflammatory markers have not been assessed in immunosuppressed liver transplant (LT) recipients with AC. The aims of this study were to compare the discriminative powers of common inflammatory markers, define the best inflammatory marker and determine the diagnostic cut-off values for the inflammatory markers in LT recipients with AC.

METHODS

This was a retrospective cohort study. Over 16 years 212 LT recipients who underwent endoscopic biliary decompression were identified from hospital records. Thirty LT recipients with AC and 30 LT recipients without AC were randomly drawn in a 1:1 ratio.

RESULTS

Among inflammatory markers, CRP had the highest discriminative power for diagnosing AC. The areas under the receiver operating characteristics curves for CRP, white blood cell count, lymphocyte count and neutrophil-to-lymphocyte ratio were 95% (95% confidence interval (CI): 91-98), 59% (95% CI: 50-68), 65% (95% CI: 53-77) and 70% (95% CI: 59-80), respectively. The cut-off value of CRP for diagnosing AC was equal to or above 9.5 mg/L.

CONCLUSION

CRP has the best discriminative power compared with other commonly used inflammatory markers for diagnosing AC in LT recipients. The optimal cut-off value for CRP concentration in diagnosing AC is equal to or above 9.5 mg/L.

Emergent versus urgent ERCP in acute cholangitis: a systematic review and meta-analysis

BACKGROUND AND AIMS

Acute cholangitis is characterized by abdominal pain, fever, and jaundice. Most patients respond to medical management with intravenous hydration and antibiotics. About 20% to 30% require biliary drainage, and ERCP is the procedure of choice. We conducted a systematic review and meta-analysis to evaluate the impact of emergent biliary drainage on patient outcomes.

METHODS

A comprehensive literature review was conducted by searching the Embase and PubMed databases from inception to April 2019 to identify all studies that evaluated the impact of timing of ERCP on patient outcomes. Our primary outcome was in-hospital mortality (IHM), and secondary outcomes were length of stay (LOS), organ failure, and 30-day mortality. Fixed and random effects models were used to generate pooled measures of IHM, 30-day mortality, and LOS.

RESULTS

Nine observational studies involving 7534 patients were included in the primary meta-analysis. IHM was significantly lower in patients who underwent emergent biliary drainage within 48 hours (odds ratio [OR], 0.52; 95% confidence interval [CI], 0.28-0.98). As a sensitivity analysis, we pooled the data from 2 population registry studies of 81,893 patients, which yielded consistent results for the main outcomes. LOS was also significantly lower in patients who underwent ERCP within 48 hours with a mean difference of 5.56 days (95% CI, 1.59-9.53). Patients who underwent emergent ERCP also had lower odds of 30-day mortality (OR, 0.39; 95% CI, 0.14-1.08) and organ failure (OR, 0.69; 95% CI, 0.33-1.46).

CONCLUSIONS

Our study reveals that performing emergent ERCP within 48 hours in patients with acute cholangitis is associated with lower IHM, 30-day mortality, organ failure, and shorter LOS.

Diagnosis and Therapeutic Management in Postcholecistectomy Alithiasic Cholangitis

Introduction:The objective of the current retrospective study is to present the results of a personal research on the prevalence and treatment of alithiasic cholangitis in hospitalized patients. Material and methods:The research was based on the following criteria: case selection according to gender, age and diagnosis, anamnesis information, clinical, paraclinical, imagery and laboratory investigation methods, therapeutic approach. Results:Between 2016-2018, 109 cases had a discharge diagnosis of postcholecystectomy cholangitis following clinical and paraclinical examinations. In a large percentage, cholangitis was alithiasic, imagery assessments showing only a dilation of the intra- and/or extra-hepatic biliary ducts (81 cases, 91.01%). Conclusions:Alithiasic cholangitis has been the main biliary cause in the postcholecystectomy pathology in this reference study (91.01%). In hospitalized people with alithiasic cholangitis as main diagnosis, highlighted endoscopic retrograde cholangiopancreatography (ERCP) represented a modern therapeutic approach; this allows the improvement of sphincter Oddi functional disorders through sphincterotomy/sphincteroplasty (6.75%).

Epidemiological profile, referral routes and diagnostic accuracy of cases of acute cholangitis among individuals with obstructive jaundice admitted to a tertiary-level university hospital: a cross-sectional study

BACKGROUND

Obstructive jaundice may lead to ominous complications and requires complex diagnostic evaluations and therapies that are not widely available.

OBJECTIVE

To analyze the epidemiological profile, referral routes and diagnostic accuracy at admittance of cases of acute cholangitis among patients with obstructive jaundice treated at a referral unit.

DESIGN AND SETTING

Cross-sectional study at a tertiary-level university hospital.

METHODS

Patients with obstructive jaundice who were treated by means of endoscopic retrograde cholangiopancreatography, resection and/or surgical biliary drainage were evaluated. The main variables analyzed were epidemiological data, referral route, bilirubin levels and time elapsed between symptom onset and admittance and diagnosing of acute cholangitis at the referral unit. The accuracy of the clinical diagnosis of acute cholangitis was compared with a retrospective analysis on the medical records in accordance with the Tokyo criteria.

RESULTS

Female patients predominated (58%), with an average age of 56 years. Acute cholangitis was detected in 9.9% of the individuals; application of the Tokyo criteria showed that the real prevalence was approximately 43%. The main referral route was direct contact (31.8%) and emergency care (29.7%); routing via official referral through the public healthcare system accounted for 17.6%, and internal referral from other specialties, 20%. The direct route with unofficial referral was the most important route for cases of neoplastic etiology (P < 0.01) and was the fastest route (P < 0.01).

CONCLUSIONS

There is a deficiency in the official referral routes for patients with obstructive jaundice. The accuracy of the clinical diagnosis of acute cholangitis was poor. Wider dissemination of the Tokyo criteria is essential.

A nomogram for predicting the risk of sepsis in patients with acute cholangitis

Objective

Sepsis is a serious complication of acute cholangitis. We aimed to establish a nomogram for predicting the probability of sepsis in patients with acute cholangitis.

Methods

Subjects were patients with acute cholangitis in the Medical Information Mart for Intensive Care database. Extraneous variables were excluded based on stepwise regression. The nomogram was established using logistic regression.

Results

The predictive model comprised five variables: age (odds ratio [OR]: 1.03, 95% confidence interval [CI]: 1.01–1.04), ventilator-support time (OR: 1.004, 95% CI: 1.001–1.008), diabetes (OR: 10.74, 95% CI: 2.80–70.57), coagulopathy (OR: 2.92, 95% CI: 1.83–4.73) and systolic blood pressure (OR: 0.62, 95% CI: 0.41–0.93). The areas under the receiver operating characteristic curve of the nomogram for the training and validation sets were 0.700 and 0.647, respectively. The Hosmer–Lemeshow goodness-of-fit test revealed high concordance between the predicted and observed probabilities for both the training and validation sets. The calibration plot also demonstrated good agreement between the predicted and observed outcomes for both the training and validation sets.

Conclusions

We developed and validated a risk-prediction model for sepsis in patients with acute cholangitis. Our results will be helpful for preventing sepsis in patients with acute cholangitis.

[Percutaneous biliary and gallbladder interventions]

CLINICAL ISSUE

Percutaneous transhepatic biliary and gall bladder interventions play an important role in the diagnosis and therapy of biliary tract diseases.

PERFORMANCE

With technical success rates up to 99% as well as complications rates up to a maximum of 26% they showed good results. Indications were opacification of the biliary tree as well as treatment of biliary system pathologies, such as drainage and stents.

ACHIEVEMENTS

Interventions were used if endoscopic approaches are not possible or exploited. We describe the current state of knowledge and the range for percutaneous biliary/gall bladder interventions and give an overview of technical approaches for fundamental interventional procedures, including percutaneous transhepatic biliary drainage.

PRACTICAL RECOMMENDATIONS

Percutaneous transhepatic biliary and gall bladder interventions are safe and effective treatments for benign and malignant stenosis, postoperative complications and risk patients with cholecystitis.

Upper gastrointestinal hemorrhage is associated with poor outcomes among patients with acute cholangitis: a nationwide analysis

OBJECTIVE

Acute cholangitis (AC) and upper gastrointestinal hemorrhage (UGIH) are common emergencies encountered by gastroenterologists. We aimed to evaluate the impact of UGIH on in-hospital mortality, morbidity and resource utilization among patients with AC.

PATIENTS AND METHODS

Adult admissions with a principal diagnosis of AC were selected from the National Inpatient Sample 2010-2014. The exposure of interest was significant UGIH (requiring red blood cell transfusion). The primary outcome was in-hospital mortality. Secondary outcomes were significant UGIH's incidence, morbidity (shock, prolonged mechanical ventilation and total parenteral nutrition), and resource utilization (length of hospital stay and total hospitalization charges and costs). Confounders were adjusted for using propensity matching and multivariate regression analysis.

RESULTS

A total of 50 375 admissions were included in the analysis, 747 of whom developed significant UGIH. After adjusting for confounders, the adjusted odds ratio (aOR) of in-hospital mortality for patients who developed UGIH was 7.1 (95% confidence interval: 2.1-23.9, P<0.01) compared with those who did not. Significant UGIH was associated with substantial increase in morbidity [shock: aOR: 4.1 (2.1-9.3), P<0.01, prolonged mechanical ventilation: aOR: 5.8 (2.2-12.4), P<0.01, total parenteral nutrition: aOR: 4.7 (1.9-10.7), P<0.01], and resource utilization [mean adjusted difference in: length of hospital stay: 7.01 (4.72-9.29), P<0.01 and total hospitalization charges: $81 818 ($58 109-$105 527), P<0.01 and costs: $25 230 ($17 805-$32 653), P<0.01]. Similar results were obtained using multivariate regression analysis.

CONCLUSION

Onset of significant UGIH among patients hospitalized with AC has a detrimental effect on in-hospital mortality, morbidity and resource utilization.

Evaluation of Biliary Bacterial Resistance in Patients with Frequent Biliary Instrumentation, One Size Does Not Fit All

BACKGROUND

Bacteremia due to cholangitis can occur as a complication of biliary instrumentation. Biliary sepsis can result from frequent endoscopic retrograde cholangiopancreatography (ERCP).

METHODS

We hypothesized that routine use of antibiotics in patients who require frequent ERCPs leads to cholangitis resistant to empiric antibiotics used to treat biliary sepsis. We retrospectively reviewed patients with frequent biliary instrumentation and blood stream infection due to cholangitis. Conventional empiric antibiotics were defined as broad-spectrum antibacterial agents predominantly used for community-acquired infections and surgical prophylaxis. Broad-spectrum antibacterial agents used for hospital-onset/multidrug-resistant infections were defined as broad-spectrum MDR antibiotics.

RESULTS

Seventy-eight patients had bacteremia secondary to cholangitis from biliary obstruction. Over 50% of bacteria were not sensitive to conventional empiric antibiotics for biliary sepsis. Thirty-seven patients did not receive post-procedural antibiotics and forty-one patients did. Of the ones who did, 58% later had a bloodstream infection with bacteria resistant to the antibiotic used for prophylaxis, and 26 patients (63%) required a broad-spectrum MDR antibiotic for treatment. The number of ERCPs was not associated with resistance to prophylactic antibiotics (p 0.7103) or needing broad-spectrum MDR antibiotics for treatment of cholangitis-associated bacteremia (p 0.1868). Routine use of antibiotic prophylaxis after ERCP was associated with trend toward need for broad-spectrum MDR antibiotics for cholangitis-associated bacteremia, Chi-square 3.7, 0 0.0540.

CONCLUSION

Bacterial resistance to conventional empiric antibiotics is an emerging problem. Blood cultures are needed to guide therapy.

Percutaneous cholecystostomy for high-risk patients with acute cholangitis

Percutaneous cholecystostomy (PC) is a well-established treatment for acute cholecystitis. We investigate the performance and role of PC in managing acute cholangitis.Retrospective review on all patients who underwent PC for acute cholangitis between January 2012 and June 2017 at a major regional hospital in Hong Kong.Thirty-two patients were included. The median age was 84 years and median American Society of Anaesthesiologists (ASA) physical status was Class III (severe systemic disease). All fulfilled Tokyo Guidelines 2013 (TG13) diagnostic criteria for moderate or severe cholangitis. Eighty-four percent of the patients were shown to have lower common bile duct stones on imaging. The majority had previously failed intervention by endoscopic retrograde cholangiopancreatography (38%), percutaneous transhepatic biliary drainage (38%), or both (13%)The technical success rate for PC was 100% with no procedure-related mortality. The overall 30-day mortality was 9%. Rest of the patients (91%) had significant improvement in clinical symptoms and could be discharged with median length of stay of 14 days. Significant postprocedural biochemical improvement was observed in terms of white cell count (P < .001), serum bilirubin (P < .001), alkaline phosphatase (P = .001), and alanine transaminase levels (P < .001). Time from admission to PC was associated with excess mortality (P = .002).PC is an effective treatment for acute cholangitis in high-risk elderly patients. Early intervention is associated with lower mortality. PC is particularly valuable as a temporising measure before definitive treatment in critical patients or as salvage therapy where other methods endoscopic retrograde cholangiopancreatography/percutaneous transhepatic biliary drainage (ERCP/PTBD) have failed.

Clinical applicability of Tokyo guidelines 2018/2013 in diagnosis and severity evaluation of acute cholangitis and determination of a new severity model

OBJECTIVE

To determine the diagnostic accuracy of Tokyo guidelines (TG) 2018/2013 (TG18/TG13) and predictors of poor prognosis in acute cholangitis.

METHODS

Retrospective 1-year study of consecutive hospital admissions for acute cholangitis. Prognosis was defined in terms of 30 d in-hospital mortality.

RESULTS

Of the 183 patients with acute cholangitis, diagnostic accuracy based on Charcot's triad, TG07 and TG18/TG13 was 67.8, 86.9 and 92.3% (p < .001), respectively. Regarding severity based on TG18/TG13, 30.6% of cases were severe. A poor prognosis was found in 10.9% of patients. After multivariate analysis, systolic blood pressure <90 mmHg (OR 11.010; p < .001), serum albumin <3 g/dL (OR 1.355; p = .006), active oncology disease (OR 3.818; p = .006) and malignant aetiology of obstructive jaundice (OR 2.224; p = .021) were independent predictors of poor prognosis. The discriminative ability of the model with these four variables was high (AUROC 0.842; p < .001), being superior to TG18/TG13 (AUROC 0.693; p = .005).

CONCLUSIONS

TG18/TG13 showed high diagnostic accuracy in acute cholangitis. Compared with TG18/TG13, the simplified severity model ≥2 allows easy selection of patients who will benefit from admission to the intensive care unit and early biliary decompression.

Successful treatment of Providencia rettgeri cholecystitis and neutrophilic cholangitis in a cat

Case summary

A 15-year-old male neutered domestic shorthair cat was presented with a recent history of seizures, diarrhoea, lethargy, fever and jaundice. Marked elevation of liver enzyme activity was present and ultrasound examination was suggestive of cholecystitis and hepatitis. Neutrophilic cholangitis was confirmed on histopathology of liver biopsies. Bile culture identified a monomicrobial infection with Providencia rettgeri, which was resistant to multiple antimicrobial agents. The cat was treated with oral pradofloxacin for 4 weeks and remained well 4 months later.

Relevance and novel information

Providencia species are rarely reported in the veterinary literature and are an uncommon cause of disease in humans. The significance of this species in humans relates to the high prevalence of antimicrobial resistance. This is the first report of P rettgeri causing clinical illness in a cat and highlights the importance of bile cultures in hepatic disease.

Emergency general surgery in pregnancy

It is often that the acute care surgeon will be called on to evaluate the pregnant patient with abdominal pain. Most of the diagnostic and management decisions regarding pregnant patients will follow the usual tenets of surgery; however, there are important differences in the pregnant patient to be aware of to avoid pitfalls which can lead to complications for both mother and fetus. This review hopes to describe the most common emergencies facing the surgeon caring for the pregnant patient and the latest management options.