A nomogram for prediction of ERCP success in patients with bile duct leaks: a multicenter study.

BACKGROUND: Bile duct leaks (BDLs) are serious complications that occurs after hepatobiliary surgery and trauma, leading to rapid clinical deterioration. Endoscopic retrograde cholangiopancreatography (ERCP) is the first-line treatment for BDLs, but it is not clear which patients will respond to this therapy and which patients will require additional surgical intervention. The aim of our study was to explore the predictors of successful ERCP for BDLs. METHODS: A retrospective analysis was conducted using data from six centers' databases. All consecutive patients who were clinically confirmed as BDLs were included in the study. Collected data were demographics, disease severity, and ERCP procedure characteristics. Univariate and multivariate analysis were used to select independent predictive factors that affect the outcome of ERCP for BDLs, and a nomogram was established. Calibration and ROC curves were used to evaluate the models. RESULTS: Four hundred and forty-eight consecutive patients were clinically confirmed as BDLs and 347 were excluded. In the 101 patients included patients, clinical success was achieved in 78 patients (77.2%). In logistic multivariable regression, two independent factors were negatively associated with the success of ERCP: SIRS (OR, 0.183; 95% CI 0.039-0.864; P = 0.032) and high-grade leak (OR 0.073; 95% CI 0.010-0.539; P = 0.010). Two independent factors were positively associated with the success of ERCP: leak-bridging drainage (OR 4.792; 95% CI 1.08-21.21; P = 0.039) and cystic duct leak (OR 6.193; 95% CI 1.03-37.17; P = 0.046). The prediction model with these four factors was evaluated using a receiver-operating characteristic (ROC) curve, which demonstrated an area under the curve of 0.9351. The calibration curve showed that the model had good predictive accuracy. CONCLUSION: Leak-bridging drainage and cystic duct leak are positive predictors for the success of ERCP, while SIRS and high-grade leak are negative predictors. This prediction model with nomogram has good predictive ability and practical clinical value, and may be helpful in clinical decision-making and prognostication.

Post-cholecystectomy bile duct injuries: a retrospective cohort study.

BACKGROUND: Bile duct injury (BDI) is still a major worrisome complication that is feared by all surgeons undergoing cholecystectomy. The overall incidence of biliary duct injuries falls between 0.2 and 1.3%. BDI classification remains an important method to define the type of injury conducted for investigation and management. Recently, a Consensus has been taken to define BDI using the ATOM classification. Early management brings better results than delayed management. The current perspective in biliary surgery is the laparoscopic role in diagnosing and managing BDI. Diagnostic laparoscopy has been conducted in various entities for diagnostic and therapeutic measures in minor and major BDIs. METHODS: 35 cases with iatrogenic BDI following cholecystectomy (after both open and laparoscopic approaches) both happened in or were referred to Alexandria Main University Hospital surgical department from January 2019 till May 2022 and were analyzed retrospectively. Patients were classified according to the ATOM classification. Management options undertaken were mentioned and compared to the timing of diagnosis, and the morbidity and mortality rates (using the Clavien-Dindo classification). RESULTS: 35 patients with BDI after both laparoscopic cholecystectomy (LC) (54.3%), and Open cholecystectomy (OC) (45.7%) (20% were converted and 25.7% were Open from the start) were classified according to ATOM classification. 45.7% were main bile duct injuries (MBDI), and 54.3% were non-main bile duct injuries (NMBDI), where only one case 2.9% was associated with vasculobiliary injury (VBI). 28% (n = 10) of the cases were diagnosed intraoperatively (Ei), 62.9% were diagnosed early postoperatively (Ep), and 8.6% were diagnosed in the late postoperative period (L). LC was associated with 84.2% of the NMBDI, and only 18.8% of the MBDI, compared to OC which was associated with 81.3% of the MBDI, and 15.8% of the NMBDI. By the Clavien-Dindo classification, 68.6% fell into Class IIIb, 20% into Class I, 5.7% into Class V (mortality rate), 2.9% into Class IIIa, and 2.9% into Class IV. The Clavien-Dindo classification and the patient's injury (type and time of detection) were compared to investigation and management options. CONCLUSION: Management options should be defined individually according to the mode of presentation, the timing of detection of injury, and the type of injury. Early detection and management are associated with lower morbidity and mortality. Diagnostic Laparoscopy was associated with lower morbidity and better outcomes. A proper Reporting checklist should be designed to help improve the identification of injury types.

Validation of a surgical difficulty grading system in laparoscopic cholecystectomy for acute cholecystitis.

BACKGROUND: The surgical difficulty of laparoscopic cholecystectomy (LC) for acute cholecystitis varies from case to case, and appropriate intraoperative evaluation would help prevent bile duct injury (BDI). METHODS: We analyzed 178 patients who underwent LC for acute cholecystitis. Expert surgeons and trainees individually evaluated the surgical difficulty. The inter-rater agreement was analyzed using Conger's κ and Gwet's agreement coefficient (AC). Furthermore, we analyzed the predictive surgical difficulty item for performing subtotal cholecystectomy (STC). RESULTS: Regarding the inter-rater agreement between expert surgeons and trainees, 15 of the 17 surgical difficulty items had a Gwet's AC of 0.5 or higher, indicating "moderate" agreement or higher. Furthermore, the highest and total surgical difficulty scores were deemed "substantial" agreement. Scarring and dense fibrotic changes around the Calot's triangle area with easy bleeding with/without necrotic changes were predictive of whether STC should be performed. CONCLUSIONS: This surgical difficulty grading system is expected to be a tool that can be used by any surgeon with LC experience. STC should be performed to prevent BDI according to the changes around the Calot's triangle area.

Aberrant Vascular Anatomy During Laparoscopic Cholecystectomy: A Case Report of Double Cystic Artery.

Introduction: Laparoscopic cholecystectomy is the standard surgical procedure for the management of benign gallbladder pathology. Anatomical variation, including aberrant cystic artery, increases the risk of complications during laparoscopic cholecystectomy. Obtaining a critical view of safety is important to avoid major vascular and bile duct injury. Case description: We present a case of aberrant anatomy with two cystic arteries of equal caliber in a 41-year-old female undergoing laparoscopic cholecystectomy for acute cholecystitis. Discussion: This case report aims to emphasize the importance of thorough knowledge of hepatobiliary vascular anatomy, as well as variations beyond the critical view of safety, which will contribute to the safety and success of laparoscopic cholecystectomy.

Critical View of Safety Dissection and Rouviere's Sulcus for Safe Laparoscopic Cholecystectomy: A Descriptive Study.

Objective: To determine the importance of a critical view of safety (CVS) techniques and Rouviere's sulcus (RS) in laparoscopic cholecystectomy (LC) and its relation to biliary duct injuries (BDIs) and to determine the frequency and the type of RS. Design, Setting, and Participants: A descriptive study was carried out among 76 patients presenting to the surgery department of a tertiary care center in Nepal. The study population included all patients in the age group 16-80 years undergoing LC. Outcome Measures: The main outcome of interest was to calculate the percentage of BDIs along with the frequency and the type of RS. Results: A total of 76 patients were enrolled in the study, out of which 57(75%) were female patients with a male-to-female ratio of 1:3 and a mean age of 45.87 ± 15.33 years. Seventy-one (93.4%) patients were diagnosed with symptomatic gallstone disease. The CVS was achieved in 75 (98.7%) of the cases, whereas in 1 case, the CVS could not be achieved, and in the same patient routine LC was converted into open cholecystectomy owing to the difficult laparoscopic procedure. In 56 (73.7%) cases, RS was first visible to the operating surgeons after port installation, alignment, and adequate traction of the gallbladder; in 20 (26.3%) cases, RS was not originally apparent. Conclusion: According to the findings of this study and the literature's critical assessment of safety, this method will soon become a gold standard for dissecting gall bladder components. The technique needs to be extended further, especially for training purposes. Major difficulties can be avoided by identifying RS before cutting the cystic artery or duct during LC.

Use of artificial intelligence for decision-support to avoid high-risk behaviors during laparoscopic cholecystectomy.

INTRODUCTION: Bile duct injuries (BDIs) are a significant source of morbidity among patients undergoing laparoscopic cholecystectomy (LC). GoNoGoNet is an artificial intelligence (AI) algorithm that has been developed and validated to identify safe ("Go") and dangerous ("No-Go") zones of dissection during LC, with the potential to prevent BDIs through real-time intraoperative decision-support. This study evaluates GoNoGoNet's ability to predict Go/No-Go zones during LCs with BDIs. METHODS AND PROCEDURES: Eleven LC videos with BDI (BDI group) were annotated by GoNoGoNet. All tool-tissue interactions, including the one that caused the BDI, were characterized in relation to the algorithm's predicted location of Go/No-Go zones. These were compared to another 11 LC videos with cholecystitis (control group) deemed to represent "safe cholecystectomy" by experts. The probability threshold of GoNoGoNet annotations were then modulated to determine its relationship to Go/No-Go predictions. Data is shown as % difference [99% confidence interval]. RESULTS: Compared to control, the BDI group showed significantly greater proportion of sharp dissection (+ 23.5% [20.0-27.0]), blunt dissection (+ 32.1% [27.2-37.0]), and total interactions (+ 33.6% [31.0-36.2]) outside of the Go zone. Among injury-causing interactions, 4 (36%) were in the No-Go zone, 2 (18%) were in the Go zone, and 5 (45%) were outside both zones, after maximizing the probability threshold of the Go algorithm. CONCLUSION: AI has potential to detect unsafe dissection and prevent BDIs through real-time intraoperative decision-support. More work is needed to determine how to optimize integration of this technology into the operating room workflow and adoption by end-users.

Persistent and new-onset symptoms after cholecystectomy in patients with uncomplicated symptomatic cholecystolithiasis: A post hoc analysis of 2 prospective clinical trials.

BACKGROUND: Laparoscopic cholecystectomy is the gold standard for treating biliary colic in patients with gallstones, but post-cholecystectomy abdominal pain is commonly reported. This study investigates which symptoms are likely to persist and which may develop after a cholecystectomy. METHODS: Patients from 2 previous prospective trials who underwent laparoscopic cholecystectomy for symptomatic cholecystolithiasis were included. Patients completed questionnaires on pain and gastrointestinal symptoms before surgery and at 6 months follow-up. The prevalence of persistent and new-onset abdominal symptoms was evaluated. RESULTS: A total of 820 patients received cholecystectomy and were included, 75.4% female (n = 616/820) mean age 49.4 years (standard deviation 13.7). At baseline, 74.1% (n = 608/820) of patients met all criteria for biliary colic. Cholecystectomy successfully resolved biliary colic in 94.8% (n = 327/345) of patients, but 36.5% (n = 299/820) of patients reported persistent abdominal pain after 6 months of follow-up. The prevalence of most abdominal symptoms reduced significantly. Symptoms such as flatulence (17.8%, n = 146/820) or restricted eating (14.5%, n = 119/820) persisted most often. New-onset symptoms were frequent bowel movements (9.6%, n = 79/820), bowel urgency (8.5%, n = 70/820), and new-onset diarrhea (8.4%, 69/820). CONCLUSION: Postcholecystectomy symptoms are mainly flatulence, frequent bowel movements, and restricted eating. Newly reported symptoms are mainly frequent bowel movements, bowel urgency, and diarrhea. The present findings give clinical guidance in informing, managing, and treating patients with symptoms after cholecystectomy.

Liver transplantation for iatrogenic bile duct injury: a systematic review.

BACKGROUND: Bile duct injury (BDI) is an infrequent but serious complication of cholecystectomy, often with life-changing consequences. Liver transplantation (LT) may be required following severe BDI, however given the rarity, few large studies exist to guide management for complex BDI. METHODS: A systematic review was performed to assess post-operative complications, 30-day mortality, retransplant rate and 1-year and 5-year survival following LT for BDI in Medline, EMBASE, Web of Science or Cochrane Clinical Trials Database. RESULTS: Seven articles met inclusion criteria, describing 179 patients that underwent LT for BDI. Secondary biliary cirrhosis (SBC) was the main indication for LT (82.2% of patients). Median model for end-stage liver disease (MELD) scores at time of LT ranged from 16 to 20.5. Median 30-day mortality was 20.0%. The 1-year and 5-year survival ranges were 55.0-84.3% and 30.0-83.3% respectively, and the overall retransplant rate was 11.5%. CONCLUSION: BDI is rarely indicated for LT, predominantly for SBC following multiple prior interventions. MELD scores poorly reflect underlying morbidity, and exception criteria for waitlisting may avoid prolonged LT waiting times. 30-day mortality was higher than for non-BDI indications, with comparable long term survival, suggesting that LT remains a viable but high risk salvage option for severe BDI.

Therapeutic Role of Subcutaneous Access Loop Created Adjunct to Hepaticojejunostomy for Management of Bile Duct Injury.

BACKGROUND: Roux-en-Y hepaticojejunostomy (RYHJ) is usually required for major bile duct injury (BDI) as a definitive treatment. Hepaticojejunostomy anastomotic stricture (HJAS) is the most feared long-term complication following RYHJ. The ideal management of HJAS remains undefined. The provision of permanent endoscopic access to the bilio-enteric anastomotic site can make endoscopic management of HJAS feasible and attractive option. In this cohort study, we aimed to evaluate short- and long-term outcomes of subcutaneous access loop created adjunct to RYHJ (RYHJ-SA) for management of BDI and its usefulness for endoscopic management of anastomotic stricture if occurred. MATERIALS AND METHODS: This is a prospective study including patients who were diagnosed with iatrogenic BDI and underwent hepaticojejunostomy with subcutaneous access loop between September 2017 and September 2019. RESULTS: This study included a total number of 21 patients whom ages ranged between 18 and 68 years. During follow-up, three cases had HJAS. One patient had the access loop in subcutaneous position. Endoscopy was done but failed to dilate the stricture. The other 2 patients had the access loop in subfascial position. Endoscopy of them failed to enter the access loop due to failure of fluoroscopy to identify the access loop. The three cases underwent redo-hepaticojejunostomy. Parajejunal (parastomal) hernia occurs in 2 patients in whom the access loop was fixed subcutaneous position. CONCLUSION: In conclusion, modified RYHJ with subcutaneous access loop (RYHJ-SA) is associated with reduced quality of life and patient satisfaction. Moreover, its role in endoscopic management of HJAS after biliary reconstruction for major BDI is limited.

Identification and management of subvesical bile duct leakage after laparoscopic cholecystectomy: A systematic review.

Bile leak is a rare complication after Laparoscopic Cholecystectomy. Subvesical bile duct (SVBD) injury is the second cause of minor bile leak, following the unsuccessful clipping of the cystic duct stump. The aim of this study is to pool available data on this type of biliary tree anatomical variation to summarize incidence of injury, methods used to diagnose and treat SVBD leaks after LC. Articles published between 1985 and 2021 describing SVBD evidence in patients operated on LC for gallstone disease, were included. Data were divided into two groups based on the intra or post-operative evidence of bile leak from SVBD after surgery. This systematic report includes 68 articles for a total of 231 patients. A total of 195 patients with symptomatic postoperative bile leak are included in Group 1, while Group 2 includes 36 patients describing SVBD visualized and managed during LC. Outcomes of interest were diagnosis, clinical presentation, treatment, and outcomes. The management of minor bile leak is controversial. In most of cases diagnosed postoperatevely, Endoscopic Retrograde Cholangio-Pancreatography (ERCP) is the best way to treat this complication. Surgery should be considered when endoscopic or radiological approaches are not resolutive.

Impact of fundus-first laparoscopic cholecystectomy for severe cholecystitis.

BACKGROUND: The Tokyo Guidelines 2018 proposed fundus-first laparoscopic cholecystectomy (FFLC) as a bailout surgery. This study investigated the clinical impact of FFLC for severe cholecystitis. METHODS: This study reviewed 772 patients who underwent laparoscopic cholecystectomy (LC) between 2015 and 2018. Of these patients, 171 patients were diagnosed with severe cholecystitis according to our difficulty scoring system. FFLC was not prevalent in our faculty for the first 2 years [early period group (EG)], whereas FFLC was predominantly used for the last 2 years [late period group (LG)]. There were 81 patients (47%) belonging to the EG and 90 patients (53%) in the LG. The clinical data and the surgical outcomes of these patients were retrospectively analyzed. RESULTS: The difficulty score did not differ between the two groups (11 vs. 11 points, p = 0.846). Patients underwent FFLC significantly more frequently in the LG (63% vs. 12%, p = 0.020). Laparoscopic subtotal cholecystectomy (LSC) was done in 10 patients (11%) of the LG, which was significantly low compared to that in the EG (n = 20, 25%) (p = 0.020). In all patients, LC was safely achieved without bile duct injury or conversion to laparotomy. The incidence of choledocholithiasis was significantly low in the LG (0 vs. 4, p = 0.048). The median postoperative hospital stay was significantly shorter in the LG (6 vs. 4 days, p < 0.001). CONCLUSION: After the introduction of FFLC, there were significant improvements in the surgical outcomes of LC for severe cholecystitis, including the rate of LSC, incidence of choledocholithiasis, and duration of postoperative hospital stay.

A retrospective analysis of bile duct injuries treated in a tertiary center: the utility of a universal classification-the ATOM classification.

BACKGROUND: Bile duct injuries (BDI) are the most feared complications that can occur after laparoscopic cholecystectomy (LC). BDI have a high variability and complexity, several classifications being developed along the years in order to correctly assess and divide BDI. The EAES ATOM classification encompasses all the important details of a BDI: A (for anatomy), To (for time of), and M (for mechanism) but have not gained universal acceptance yet. Our study intents to analyze the cases of BDI treated in our institution with a focus on the clinical utility of the ATOM classification. METHODS: We conducted a retrospective study, on a 10-year period (2011-2020), including patients diagnosed with BDI after LC, with their definitive treatment performed in our tertiary center. All injuries were retrospectively classified using the Strasberg, Hannover, and ATOM classifications. RESULTS: We included in our study 100 patients; 15% of the BDI occurred in our center. No classification system was used in 73% of patients; 23% of the BDI were classified by the Strasberg system, 3% were classified by the Bismuth classification, 1% being classified by the ATOM classification. After retrospectively assessing all BDI, we observed that especially the Strasberg classification, as well as Hannover, over-simplifies the characteristics of the injury, many types of BDI according to ATOM being included in the same Strasberg or Hannover category. Most main bile duct injuries underwent a bilio-digestive anastomosis (60%), as a definitive treatment. An important percentage of cases (31%) underwent a primary treatment in the hospital of origin, reintervention with definitive treatment being done in our department. CONCLUSION: The ATOM classification is the best suited for accurately describing the complexity of a BDI, serving as a template for discussing the correct management for each lesion. Efforts should be made toward increasing the use of this classification in day-to-day clinical practice.

Risk factors for the development of biliary tract infection after choledochal-malformation surgery.

OBJECTIVE: To explore the risk factors of biliary tract infection after bile duct dilatation surgery. METHODS: The study included 135 patients with choledochal malformation after bile duct dilatation surgery at our hospital from January 2019 to June 2021. We analyzed general data of infected and uninfected groups after bile duct dilatation surgery. Single/multiple factor logistic regression was used to analyse the factors influencing postoperative biliary tract infection in bile duct dilatation. RESULTS: There were statistically significant differences in preoperative history of biliary tract infection, partial hepatectomy, hilar anastomosis, and Todani staging between the two groups. Single factor Logistic regression analysis showed that preoperative history of biliary tract infection, partial hepatectomy, hepatic portal anastomosis and Todani staging IV and V were positively correlated with postoperative biliary tract infection following biliary duct dilatation (P＜0.05). In addition, logistic regression analysis of these general data with differential indicators as independent variables and postoperative biliary tract infection in biliary duct dilatation as a dependent variable showed that history of preoperative biliary tract infection and hepatic portal anastomosis were risk factors of postoperative biliary tract infection following biliary duct dilatation. CONCLUSION: Risk factors of biliary tract infection after bile duct dilatation include a history of preoperative biliary tract infection and hepatoportal anastomosis, which should be noted during clinical procedures to prevent or reduce the development of biliary tract infection after bile duct dilatation.

An Iatrogenic Injury? Anthony Eden and the Suez Crisis of 1956.

In 1953, Eden, then Britain's Foreign Secretary, sustained a bile duct injury during a cholecystectomy. After reconstructive surgery at the Lahey Clinic, he continued to experience episodes of cholangitis, notably during the Suez Crisis of 1956. By then prime minister, the crisis ended in a humiliating retreat for Eden and for Britain. The role that his iatrogenic injury, its long term sequelae, and the cocktail of drugs he took to treat them played in his decision making has been an ongoing source of debate almost from the time of the crisis. This article reviews the Suez crisis, Eden's medical history, and the debate over Eden's health.

Surgery of iatrogenic bile duct injuries.

Iatrogenic bile duct injury still represents a serious complication mostly connected with minimally invasive cholecystectomy. This complication has an important impact both on short- and long-term morbidity and is associated with non-negligible mortality. The objective of our study was to provide a comprehensive summary of information based on the most recent guidelines with recommendations for how to prevent a bile duct injury, how to reach an early diagnosis and finally, how to proceed should they occur in order to minimize further damage. We also present ATOM, a new classification of bile duct injuries that provides clear information not only about the extent of anatomical damage, but also about the time and mechanism of its occurrence.

Analysis of risk factors for bile duct injury in laparoscopic cholecystectomy in China: A systematic review and meta-analysis.

BACKGROUND: To explore the risk factors of bile duct injury in laparoscopic cholecystectomy (LC) in China through meta-analysis. METHODS: The study commenced with a search and selection of case-control studies on the risk factors for bile duct injury in LC in China using the following databases: PubMed, EMBASE, ScienceNet.cn, CNKI, Wanfang Data, and VIP. Data were extracted from the collected documents independently by 2 researchers, following which a meta-analysis of these data was performed using Revman 5.3. RESULTS: The compilation of all data from a total of 19 case-control studies revealed that among 41,044 patients, 458 patients experienced bile duct injury in LC, accounting for the incidence rate of 1.12% for bile duct injury. The revealed risk factors for bile duct injury were age (≥40 years) (odds ratio [OR] = 6.23, 95% CI [95% confidence interval]: 3.42-11.33, P < .001), abnormal preoperative liver function (OR = 2.01, 95% CI: 1.50-2.70, P < .001), acute and subacute inflammation of gallbladder (OR = 8.35, 95% CI: 5.32-13.10, P < .001; OR = 4.26, 95% CI: 2.73-6.65, P < .001), thickening of gallbladder wall (≥4 mm) (OR = 3.18, 95% CI: 2.34-4.34, P < .001), cholecystolithiasis complicated with effusion (OR = 3.05, 95% CI: 1.39-6.71, P = .006), and the anatomic variations of the gallbladder triangle (OR = 11.82, 95% CI: 6.32-22.09, P < .001). However, the factors of gender and overweight (body mass index ≥ 25 kg/m2) were not significantly correlated with bile duct injury in LC. CONCLUSIONS: In the present study, age (≥40 years), abnormal preoperative liver function, gallbladder wall thickening, acute and subacute inflammation of the gallbladder, cholecystolithiasis complicated with effusion, and anatomic variations of the gallbladder triangle were found to be closely associated with bile duct injury in LC.

Selective intraoperative cholangiography should be considered over routine intraoperative cholangiography during cholecystectomy: a systematic review and meta-analysis.

BACKGROUND: Decades of debate surround the use of intraoperative cholangiography (IOC) during cholecystectomy. To the present day, the role of IOC is controversial as regards decreasing the rate of bile duct injury (BDI). We aimed to review and analyse the available literature on the benefits of IOC during cholecystectomy. METHODS: A systematic literature search was performed until 19 October 2020 in five databases using the following search keys: cholangiogra* and cholecystectomy. The primary outcomes were BDI and retained stone rate. To investigate the differences between the groups (routine IOC vs selective IOC and IOC vs no IOC), we calculated weighted mean differences (WMD) for continuous outcomes and relative risks (RR) for dichotomous outcomes, with 95% confidence intervals (CI). RESULTS: Of the 19,863 articles, 38 were selected and 32 were included in the quantitative synthesis. Routine IOC showed no superiority compared to selective IOC in decreasing BDI (RR = 0.91, 95% CI 0.66; 1.24). Comparing IOC and no IOC, no statistically significant differences were found in the case of BDI, retained stone rate, readmission rate, and length of hospital stay. We found an increased risk of conversion rate to open surgery in the no IOC group (RR = 0.64, CI 0.51; 0.78). The operation time was significantly longer in the IOC group compared to the no IOC group (WMD = 11.25 min, 95% CI 6.57; 15.93). CONCLUSION: Our findings suggest that IOC may not be indicated in every case, however, the evidence is very uncertain. Further good quality research is required to address this question.

Postoperative liver function tests can predict anastomotic dysfunction after bile duct injury repair.

Liver function tests help in the follow-up of postoperative patients with iatrogenic bile duct injury. There is not clear evidence regarding their predictive role on anastomosis dysfunction. We describe our experience with postoperative liver function tests and a predictive model of long-term patency after repair. This is retrospective cohort study of patients with bilioenteric anastomosis for bile duct injury and their long-term follow-up. A binomial logistic regression model was performed to ascertain the effects of the grade of bile duct injury and liver function test in the postoperative period. A total of 329 patients were considered for the analysis. In the logistic regression model two predictor variables were statistically significant for anastomosis stenosis: type of bilioenteric anastomosis and alkaline phosphatase levels. A ROC curve analysis was made for alkaline phosphatase with an area under the curve of 0.758 (95% CI 0.67-0.84). A threshold of 323 mg/dL was established (OR 6.0, 95% CI 2.60-13.83) with a sensitivity of 75%, specificity of 67%, PPV of 20%, NPV of 96%, PLR of 2.27 and NLR of 0.37. Increased alkaline phosphatase (above 323 mg/dL) after the fourth operative week was found to be a predictor of long-term dysfunction.

Elective laparoscopic cholecystectomy: recurrent biliary admissions predispose to difficult cholecystectomy.

INTRODUCTION: Patients undergoing elective laparoscopic cholecystectomy (ELLC) represent a heterogeneous group making it challenging to stratify risk. The aim of this paper is to identify pre-operative factors associated with adverse peri- and post-operative outcomes in patients undergoing ELLC. This knowledge will help stratify risk, guide surgical decision making and better inform the consent process. METHODS: All patients who underwent ELLC between January 2015 and December 2019 were included in the study. Pre-operative data and both peri- and post-operative outcomes were collected retrospectively from multiple databases using a deterministic records-linkage methodology. Patients were divided into groups based on clinical indication (i.e. biliary colic versus cholecystitis) and adverse outcomes were compared. Multivariate regression models were generated for each adverse outcome using pre-operative independent variables. RESULTS: Two-thousand one hundred and sixty-six ELLC were identified. Rates of peri- and post-operative adverse outcomes were significantly higher in the cholecystitis versus biliary colic group and increased with number of admissions of cholecystitis (p < 0.05). Rates of subtotal (29.5%), intra-operative complication (9.8%), post-operative complications (19.6%), prolonged post-operative stay (45.9%) and re-admission (16.4%) were significant in the group of patients with ≥ 2 admissions with cholecystitis. CONCLUSION: Our data demonstrate that patients with repeated biliary admission (particularly cholecystitis) ultimately face an increased risk of a difficult ELLC with associated complications, prolonged post-operative stay and readmissions. These data provide robust evidence that individualised risk assessment and consent are necessary before ELLC. Strategies to minimise recurrent biliary admissions prior to LC should be implemented.

Intraoperative cholangiography 2020: Quo vadis? A systematic review of the literature.

BACKGROUND: There are few randomized controlled trials with sufficient statistical power to assess the effectiveness of intraoperative cholangiography (IOC) in the detection and treatment of common bile duct injury (BDI) or retained stones during cholecystectomy. The best evidence so far regarding IOC and reduced morbidity related to BDI and retained common bile duct stones was derived from large population-based cohort studies. Population-based studies also have the advantage of reflecting the outcome of the procedure as it is practiced in the community at large. However, the outcomes of these population-based studies are conflicting. DATA SOURCES: A systematic literature search was conducted in 2020 to search for articles that contained the terms "bile duct injury", "critical view of safety", "bile duct imaging" or "retained stones" in combination with IOC. All identified references were screened to select population-based studies and observational studies from large centers where socioeconomic or geographical selections were assumed not to cause selection bias. RESULTS: The search revealed 273 references. A total of 30 articles fulfilled the criteria for a large observational study with minimal risk for selection bias. The majority suggested that IOC reduces morbidity associated with BDI and retained common bile duct stones. In the short term, IOC increases the cost of surgery. However, this is offset by reduced costs in the long run since BDI or retained stones detected during surgery are managed immediately. CONCLUSIONS: IOC reduces morbidity associated with BDI and retained common bile duct stones. The reports reviewed are derived from large, unselected populations, thereby providing a high external validity. However, more studies on routine and selective IOC with well-defined outcome measures and sufficient statistical power are needed.