IRCAD recommendation on safe laparoscopic cholecystectomy

Non-programmed rehospitalizations after cholecystectomy

Cholecystectomy is one the most frequent procedures in digestive surgery. While the operation is generally associated with low rates of morbidity and mortality, frequency of occurrence can vary considerably according to surgical indication, time elapsed between symptom appearance and surgical intervention, anatomical area under treatment, and the experience of the different centers. Rehospitalization after cholecystectomy remains potentially problematic in numerous units, due in part to the ongoing development of day hospital treatment and short-term hospitalization. The objective of this update is to assess not only the rate, causes and risk factors of non-programmed hospitalizations subsequent to cholecystectomy, but also the available ways and means of prevention and management in the patient's best interests.

Systematic review on the use of artificial intelligence to identify anatomical structures during laparoscopic cholecystectomy: a tool towards the future

PURPOSE

Bile duct injury (BDI) during laparoscopic cholecystectomy (LC) is a dreaded complication. Artificial intelligence (AI) has recently been introduced in surgery. This systematic review aims to investigate whether AI can guide surgeons in identifying anatomical structures to facilitate safer dissection during LC.

METHODS

Following PROSPERO registration CRD-42023478754, a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-compliant systematic search of MEDLINE (via PubMed), EMBASE, and Web of Science databases was conducted.

RESULTS

Out of 2304 articles identified, twenty-five were included in the analysis. The mean average precision for biliary structures detection reported in the included studies reaches 98%. The mean intersection over union ranges from 0.5 to 0.7, and the mean Dice/F1 spatial correlation index was greater than 0.7/1. AI system provided a change in the annotations in 27% of the cases, and 70% of these shifts were considered safer changes. The contribution to preventing BDI was reported at 3.65/4.

CONCLUSIONS

Although studies on the use of AI during LC are few and very heterogeneous, AI has the potential to identify anatomical structures, thereby guiding surgeons towards safer LC procedures.

DOse and administration Time of Indocyanine Green in near-infrared fluorescence cholangiography during laparoscopic cholecystectomy (DOTIG): a randomized clinical trial

BACKGROUND

Different techniques have been proposed to reduce the incidence of the intraoperative bile duct injury during laparoscopic cholecystectomy (LC). Among these, Near-Infrared Fluorescence Cholangiography (NIFC) with Indocyanine Green (ICG) represents a relatively recent addition. At present, there is considerable variation in the protocols for the administration of ICG.

METHODS

The aim of this randomized multicenter clinical trial (RCT) is to ascertain whether there are differences between the dosage and administration intervals of ICG, with a view to optimizing a good-quality NIFC during LC. Furthermore, an analysis was conducted to determine the potential impact of different factors on the outcomes of this technique. The trial was approved by the local institutional Ethics Committee.

RESULTS

From June 2022 to June 2023, 200 patients were randomized in four arms (G1: 2.5 mg ICG > 3 h prior to surgery, G2: 2.5 mg ICG 15-30 min prior to surgery, G3: 0.05 mg/kg ICG > 3 h prior to surgery and G4: 0.05 mg/kg ICG 15-30 min prior to surgery). We found differences in the DISTURBED score between the groups (p < 0.001), suggesting that ICG administration 15-30 min before surgery was worse than administration > 3 h after LC (p = 0.02). Additionally, it was observed that body mass index (BMI), gender, ASA Classification System, previous liver and biliary disease and the type of surgery had influence on NIFC. Finally, the NIFC had an impact in intraoperative and postoperative complications, operative time and hospital length of stay.

CONCLUSIONS

The administration of ICG > 3 h improve liver background fluorescence in the NIFC during LC. There are different factors may affect NIFC results (BMI, ASA grade, previous liver disease, presence of gallbladder inflammation and type of surgery). Finally, high-quality NIFC was associated with fewer surgical complications, shorter surgical time and shorter length of hospital stay.

Endoscapes, a critical view of safety and surgical scene segmentation dataset for laparoscopic cholecystectomy

Minimally invasive image-guided surgery heavily relies on vision. Deep learning models for surgical video analysis can support surgeons in visual tasks such as assessing the critical view of safety (CVS) in laparoscopic cholecystectomy, potentially contributing to surgical safety and efficiency. However, the performance, reliability, and reproducibility of such models are deeply dependent on the availability of data with high-quality annotations. To this end, we release Endoscapes2023, a dataset comprising 201 laparoscopic cholecystectomy videos with regularly spaced frames annotated with segmentation masks of surgical instruments and hepatocystic anatomy, as well as assessments of the criteria defining the CVS by three trained surgeons following a public protocol. Endoscapes2023 enables the development of models for object detection, semantic and instance segmentation, and CVS prediction, contributing to safe laparoscopic cholecystectomy.

Critical view of safety approach vs. infundibular technique in laparoscopic cholecystectomy, which one is safer? A systematic review and meta-analysis

Laparoscopic cholecystectomy (LC) remains the gold standard procedure for the management of benign gallbladder disease. Recognizing the need to mitigate complications, mainly bile duct injury (BDI), various techniques for ductal identification during LC have emerged, including the "Critical View of Safety" (CVS) and the infundibular technique (IT). In this systematic review and meta-analysis, we assess and compare the outcomes of both techniques, with a primary focus on evaluating their impact on BDIs. A comprehensive search was conducted using PubMed and Scopus databases. The search focused on the surgical technique, incidences of minor and major BDIs, operative time, conversion rate, and length of stay, among patients undergoing LC for benign gallbladder disease. Our initial search retrieved 264 studies. After screening the unique studies against our predefined inclusion/exclusion criteria, only five met our criteria and were included. Additionally, a manual search identified eight more relevant studies, bringing the total number of included studies to 13. The total number of included patients was 4,837. Approximately two-thirds underwent LC using the CVS approach (61.1%), and 66.3% were female, with a mean age of 44.4 ± 11.2 years. The CVS approach was associated with a significant reduction in overall BDIs (RR = 0.36; 95% CI 0.18-0.71) and major BDIs (RR = 0.28; 95% CI 0.13-0.63). However, there were no significant differences in terms of minor BDIs, operative time, conversion rates, or length of stay. Our study demonstrated the superiority of the CVS approach in terms of reducing the incidence of overall and major BDIs compared to IT. However, our study revealed no other significant differences between the two techniques. Further research, including multicentric randomized controlled trials, will be necessary to further evaluate the efficacy of these techniques.

Indocyanine Blue (ICB) as a Functional Alternative to Indocyanine Green (ICG) for Enhanced 700 nm NIR Imaging

Despite significant advancements in bioimaging technology, only a limited number of fluorophores are currently approved for clinical applications. Indocyanine green (ICG) is the first FDA-approved near-infrared (NIR) fluorophore and has significantly advanced clinical interventions over the past three decades. However, its single-channel imaging at 800 nm emission is often insufficient for capturing comprehensive diagnostic information during surgery. In this study, we evaluate indocyanine blue (ICB), an ICG analog with a shorter polymethine bridge, as a promising candidate for multi-channel NIR imaging. ICB demonstrated peak absorption and emission approximately 100 nm shorter than ICG in aqueous solutions, placing it within the 700 nm range of the NIR window. Furthermore, ICB exhibited favorable solubility and optical properties in aqueous environments, supporting its potential for in vivo imaging applications. Notably, ICB shows rapid systemic clearance, likely due to its lower molecular weight, which facilitates clear visualization in angiography, cholangiography, and lymph node mapping with minimal background interference. Additionally, dual-channel imaging of tumors and lymph nodes was achieved using a tumor-targeting fluorophore in conjunction with ICB, illustrating the potential for enhanced intraoperative guidance. ICB emitting at 700 nm, therefore, can be useful in NIR imaging, broadening the possibilities for improved diagnostic accuracy and therapeutic outcomes in clinical settings.

The Role of ICG-Guided Fluorescent Mode in Boosting the Learning Curve of Laparoscopic Cholecystectomy

Background: The most common therapy for gallstones is laparoscopic cholecystectomy (LC). How to help young residents avoid bile duct injuries (BDI) during surgery and grasp LC seems to be a paradox. Methods: We retrospectively reviewed 145 cases of LC operated by two residents under indocyanine green (ICG)-guided mode or normal LC procedures to illustrate the role of ICG mode in boosting the LC learning curve. The clinic data were analyzed by logistic regression, receiver operator curve tests, Cumulative Sum (CUSUM), and Risk-Adjusted Cumulative Sum (RA-CUSUM) analysis. Results: The operation failure rate is similar. However, operation time under ICG mode is shorter than that under normal mode. The peak at the 49th case represented the normal resident's complete mastery of the surgery, while the peak point of ICG mode appeared at the 36th case in the fitting curve. The most significant cumulative risk (peak point) of operation failure of LC was at the 35th case in ICG LC mode, while it appeared in the 49th in normal LC mode. Conclusions: Owing to the advantage of real-time imaging and the stable success rate of cholangiography, ICG-guided LC helps residents shorten the operation time, boost the learning curve, and manage to control the operation failure rate.

Intravenous injection versus transhepatic intracholecystic injection of indocyanine green (ICG) to outline biliary tree during laparoscopic cholecystectomy

BACKGROUND

To potentially lessen injuries and associated complications, fluorescence cholangiography has been suggested as a technique for enhancing the visualization and identification of extrahepatic biliary anatomy. The most popular way to administer indocyanine green (ICG) is intravenously, as there is currently little data on ICG injections directly into the gallbladder. In order to visualize extrahepatic biliary anatomy during laparoscopic cholecystectomy (LC), we compared the two different ICG administration techniques. We also examined variations in visualization time, as well as the effectiveness, benefits, and drawbacks of each modality.

METHODS

In this prospective randomized clinical study, 60 consecutive adult patients with chronic and acute gallbladder disease were included. Our study conducted from 2022 to 2024 in Surgical Department of Theodor Bilharz Research Institute. Thirty patients underwent LC with intravenous ICG administration (IV-ICG), thirty patients received a direct injection of gallbladder through transhepatic ICG (IC-ICG) and Preoperative, intraoperative, and postoperative patient data were examined.

RESULTS

In terms of their perioperative and demographic features, the groups were similar. Without a statistically significant difference, the IV-ICG group's total operating time was less than that of the IC-ICG group (p 0.140). Compared to the transhepatic IC-ICG method, IV-ICG was more accurate in identifying the duodenum and the common hepatic duct (p = 0.029 and p = 0.016, respectively). In the transhepatic IC-ICG and IV-ICG groups, the cystic duct could be identified prior to dissection in 66.6% and 73.3% of cases, respectively, and this increased to 86.6% and 93.3% following dissection. In the transhepatic IC-ICG group, the common bile duct was visible in 93.3% of cases; in the IV-ICG group, it was visible in 90% of cases. Two cases in the IC-ICG group and every case following IV-ICG administration had liver fluorescence (6.6% versus 100%; p < 0.001).

CONCLUSION

The current study shows that for both administration methods, ICG-fluorescence cholangiography can be useful in identifying the extrahepatic biliary anatomy during Calot's triangle dissection. By avoiding hepatic fluorescence, the transhepatic IC-ICG route can increase the bile duct-to-liver contrast with less expense and no risk of hypersensitivity reactions than the intravenous ICG injection method. We recommend to use both techniques in case of acute cholecystitis with cystic duct obstruction. In cases of liver cirrhosis, we recommend transhepatic IC-ICG as IV-ICG is limited.

Indocyanine green in laparoscopic cholecystectomy: utility and correlation with a preoperative risk score

BACKGROUND

This study aims to compare the visualization of the cystic duct-common bile duct junction with indocyanine green (ICG) among 3 groups of patients divided according to the difficulty of elective laparoscopic cholecystectomy.

METHODS

Conducted at a single center, this non-randomized, prospective, observational study encompassed 168 patients who underwent elective laparoscopic cholecystectomy and were assessed with a preoperative risk score to predict difficult cholecystectomies, including clinical factors and radiological findings. Three groups were identified: low, moderate, and high risk. A dose of 0.25 mg of IV ICG was administered during anesthesia induction and the different objectives were evaluated.

RESULTS

The visualization of the cystic duct-common bile duct junction was achieved in 28 (100%), 113 (91.1%), and 10 (63%) patients in the low, moderate, and high-risk groups, respectively. The high-risk group had longer total operative time, higher conversion, more complications and longer hospital stay. In the surgeon's subjective assessment, ICG was considered useful in 36% of the low-risk group, 58% in the moderate-risk group, and 69% in the high-risk group. Additionally, there were no cases where ICG modified the surgeon's surgical approach in the low-risk group, compared to 11% in the moderate-risk group and 25% in the high-risk group (p < 0.01).

CONCLUSIONS

The results of this study confirm that in the case of difficult cholecystectomies, the visualization of the cystic duct-common bile duct junction is achieved in 63% of cases and prompts a modification of the surgical procedure in one out of four patients.

Multicenter analysis of the efficacy of early cholecystectomy and preoperative cholecystostomy for severe acute cholecystitis: a retrospective study of data from the multi-institutional database of the Hiroshima Surgical Study Group of Clinical Oncology

BACKGROUND

Severe acute cholecystitis (AC) is a challenging disease because it comprises coexisting systemic infections that lead to vital organ dysfunction. This study evaluated the optimal surgical timing and efficacy of preoperative percutaneous cholecystostomy (PC) for patients with severe AC.

METHODS

Data of 142 patients who underwent cholecystectomy for severe AC between 2011 and 2021 were retrospectively collected from the multi-institutional database of the Hiroshima Surgical Study Group of Clinical Oncology. Patients were divided into the early cholecystectomy (EC) group (within 72 h of symptom onset) and delayed cholecystectomy (DC) group. They were also subdivided into the upfront cholecystectomy group and preoperative PC before cholecystectomy group. The diagnosis and severity of AC were graded according to the Tokyo Guidelines 2018. Clinicopathological variables and outcomes were compared.

RESULTS

No significant differences in age, body mass index, American Society of Anesthesiologists (ASA) classification, and Charlson comorbidity index between the EC and DC groups were observed. Preoperative drainage was more commonly performed for the DC group than for the EC group. Local severe AC features were more commonly detected in the DC group than in the EC group. The postoperative outcomes of the EC and DC groups were comparable. Compared to the PC before cholecystectomy group, the upfront cholecystectomy group included more patients with ASA physical status ≥ 3 and more patients who used oral warfarin. Warfarin usage and cardiovascular dysfunction rates of the PC after cholecystectomy group were higher than those of the upfront cholecystectomy group. PC was associated with significantly less intraoperative bleeding and shorter hospital stays.

CONCLUSIONS

Patients who can tolerate general anesthesia are good candidates for EC. Patients who use warfarin and those with cardiovascular dysfunction are considered to be at high risk for postoperative complications; therefore, to prevent AC recurrence during the waiting period, PC before cholecystectomy during the same admission is more appropriate than upfront cholecystectomy for these patients.

A bifid gallbladder? A challenging laparoscopic cholecystectomy

INTRODUCTION

The modern-day gold standard treatment of acute cholecystitis is laparoscopic surgery. It is, however, associated with a higher risk of bile duct injury (0.1 %-1.5 %) when compared to the open approach.

CASE PRESENTATION

We report a case of a patient with an acute cholecystitis in which we performed a laparoscopic cholecystectomy. We faced a destabilizing anatomy with what looked like the gallbladder and an unidentified mass, interpreted as a possible common bile duct cyst. Careful dissection allowed us to determine that what looked like a common bile duct cyst was a dilatation of "Hartmann's pouch" due to a large gallstone.

DISCUSSION

Laparoscopic cholecystectomy reduces length of hospitalization and enhance intra-operative and postoperative morbidity compared with open cholecystectomy. It may increase the risk of bile duct injury, notably in an acute setting due to inflammation and an unclear anatomy. Hartmann's pouch with the infundibulum can sometimes unexpectedly be present beneath the common hepatic duct. In order to avoid bile duct injury, notably in an acute setting, a surgical technique was developed, the Critical View of Safety. It is a method whose sole aim is to secure identification of the cystic structures.

CONCLUSION

Understanding the anatomy allowed for an ultimately safe laparoscopic cholecystectomy. It is strongly advised that, in the event of atypical anatomy, a second opinion is asked of another and/or more experimented surgeon.

Safety of cholecystectomy performed by surgeons who prefer fundus first versus surgeons who prefer a standard laparoscopic approach

Background

An alternative method to standard laparoscopic cholecystectomy (SLC) is the "fundus first" method (FFLC). Concerns have been raised that FFLC can lead to misinterpretation of important anatomical structures, thus causing complications of a more serious kind than SLC. Comparisons between the methods are complicated by the fact that FFLC is often used as a rescue procedure in complicated cases. To avoid confounding related to this we conducted a population-based study with comparisons on the surgeon level.

Method

In GallRiks, the Swedish registry for Gallbladder surgery, we stratified all cholecystectomies performed 2006-2020 in three groups: surgeries carried out by surgeons that uses FFLC in <20 % of the cases (N = 150,119), in 20-79 % of the cases (N = 10,212) and in 80 % or more of the cases (N = 3176). We compared the groups with logistic regression, adjusting for sex, age, surgical experience, year of surgery and history of acute cholecystitis. All surgical complications (bleeding, gallbladder perforation, visceral perforation, infection, and bile duct injury) were included as outcome. A separate analysis was done with regards to operation time.

Results

No difference in incidence of all surgical complications or bile duct injury were seen between groups. The rates of bleeding (OR 0.34 [0.14-0.86]) and gallbladder perforation (OR 0.61 [0.45-0.82]) were significantly lower in the "fundus first > 80% group" and the operative time was shorter (OR 0.76 [0.69-0.83]).

Conclusion

In this study including >160,000 cholecystectomies, both methods was found to be equally safe.

Key message

During laparoscopic cholecystectomy, the standard method of dissection and fundus first dissection are equally safe surgical techniques. Surgeons need to learn both methods to be able to use the one most appropriate for each individual case.

What Happens After Discharge? A 2+ Year Follow-Up After Laparoscopic Subtotal Fenestrating and Reconstituting Cholecystectomy

Laparoscopic subtotal cholecystectomy (LSC) is utilized to prevent complications in the difficult cholecystectomy. Medium-term outcomes are poorly studied for fenestrating and reconstituting operative techniques. A single-institution retrospective review was undertaken of all LSCs. A telephone survey was used to identify complications addressed at other institutions. We performed subgroup analyses by operative approach and of patients requiring postoperative endoscopic intervention (ERC). 28 patients met inclusion criteria. The median follow-up was 32.7 months. There were no bile duct injuries or reoperations. 21% of patients required a postoperative ERC and 50% were discharged home with a drain. Bile leaks were found to be more prevalent in the fenestrating LSC group (38% vs 0%, P = .003). The case series suggested more severe recurrent biliary disease in patients undergoing reconstituting LSC. Laparoscopic subtotal cholecystectomy appears to have satisfactory medium-term outcomes. The reconstituting LSC group trends toward more severe recurrent disease which warrants further investigation.

Development of an artificial intelligence system for real-time intraoperative assessment of the Critical View of Safety in laparoscopic cholecystectomy

BACKGROUND

The Critical View of Safety (CVS) was proposed in 1995 to prevent bile duct injury during laparoscopic cholecystectomy (LC). The achievement of CVS was evaluated subjectively. This study aimed to develop an artificial intelligence (AI) system to evaluate CVS scores in LC.

MATERIALS AND METHODS

AI software was developed to evaluate the achievement of CVS using an algorithm for image classification based on a deep convolutional neural network. Short clips of hepatocystic triangle dissection were converted from 72 LC videos, and 23,793 images were labeled for training data. The learning models were examined using metrics commonly used in machine learning.

RESULTS

The mean values of precision, recall, F-measure, specificity, and overall accuracy for all the criteria of the best model were 0.971, 0.737, 0.832, 0.966, and 0.834, respectively. It took approximately 6 fps to obtain scores for a single image.

CONCLUSIONS

Using the AI system, we successfully evaluated the achievement of the CVS criteria using still images and videos of hepatocystic triangle dissection in LC. This encourages surgeons to be aware of CVS and is expected to improve surgical safety.

Detection and management of bile duct injury during cholecystectomy

INTRODUCTION

Cholecystectomy represents one of the most performed surgical procedures. Bile duct injuries (BDIs) are a dangerous complication of this intervention. With the advent of the laparoscopy, the rate of BDIs showed a growing trend that was partially justified by the learning curve of this technique.

EVIDENCE ACQUISITION

A literature search was conducted on Embase, Medline, and Cochrane databases to identify studies published up to October 2022 that analyzed the intraoperative detection and management of BDIs diagnosed during cholecystectomy.

EVIDENCE SYNTHESIS

According to the literature, approximately 25% of BDIs is diagnosed during the laparoscopic cholecystectomy. In the clinical suspicion of BDI, an intraoperative cholangiography is performed to confirm it. Complimentary technology, such as near-infrared cholangiography, can be also adopted. Intraoperative ultrasound represents a useful tool to furtherly define the biliary and the vascular anatomy. The proper classification of the type of BDI allows to identify the correct treatment. When a good expertise in hepato-pancreato-biliary surgery is available, a direct repair is performed with good outcomes both in case of simple and complex lesions. When the local resources are limited or there is a lack of dedicated surgical experience, patient referral to a reference center shows better outcomes. In particular, complex vasculo-biliary injuries require a highly specialized treatment. The key elements to transfer the patients are a good documentation of the injury, a proper drainage of the abdomen, and an antibiotic therapy.

CONCLUSIONS

BDI management requires a proper diagnostic process and prompt treatment to reduce the morbidity and mortality of this feared complication occurring during cholecystectomy.

Identification of the ideal weight-based indocyanine green dose for fluorescent cholangiography

BACKGROUND

Ideal visualization of fluorescent cholangiography during laparoscopic cholecystectomy is when maximum fluorescence into biliary ducts and absent signal into liver parenchyma, defined as "signal to background ratio" (SBR), is obtained. Such condition is mainly dependent by indocyanine green (ICG) dose and timing. The aim of this study was to identify the ideal ICG dose to obtain the best possible intraoperative visualization of the extra-hepatic biliary tree.

METHODS

The first part of the study was used to define a range of small weight-based ICG dosages using the mathematical function bisection method. During the second part of the study, the midpoint dose of the identified range, was tested in 50 consecutive cholecystectomies using a laser-based fluorescence laparoscopic camera (SynergyID system by Arthrex, Naples, FL, USA). Timing administration was set at 1 h before surgery, since this is the most common situation in clinical practice. Fluorescence intensity of bile ducts and liver parenchyma were assessed both subjectively, by blinded operative surgeon, as well as objectively, using an image analysis software (Fiji plugin), before and after Calot's triangle dissection.

RESULTS

Fourteen patients were included in the first part of the study and ICG dose between 0.01191406 and 0.0119873 mg/kg was identified. The second part confirmed previous results after testing the dosage equal to 0.0119 mg/kg (midpoint of the defined range) in 50 consecutive cholecystectomies. Cystic duct was identified in 66 and 100% of cases before and after dissection of Calot's triangle respectively. On the other hand, common bile duct was identified in 82 and 92% before and after dissection respectively. Subjective and objective SBRs confirmed the benefit of the identified ICG dose.

CONCLUSION

ICG dose calculated by 0.0119 mg/kg administered one hour before surgery allows an ideal intraoperative visualization of the extra-hepatic biliary tree.

REGISTRATION NUMBER

ISRCTN10190039.

When Critical View of Safety Fails: A Practical Perspective on Difficult Laparoscopic Cholecystectomy

The incidence of common bile duct injuries following laparoscopic cholecystectomy (LC) remains three times higher than that following open surgery despite numerous attempts to decrease intraoperative incidents by employing better training, superior surgical instruments, imaging techniques, or strategic concepts. This paper is a narrative review which discusses from a contextual point of view the need to standardise the surgical approach in difficult laparoscopic cholecystectomies, the main strategic operative concepts and techniques, complementary visualisation aids for the delineation of anatomical landmarks, and the importance of cognitive maps and algorithms in performing safer LC. Extensive research was carried out in the PubMed, Web of Science, and Elsevier databases using the terms "difficult cholecystectomy", "bile duct injuries", "safe cholecystectomy", and "laparoscopy in acute cholecystitis". The key content and findings of this research suggest there is high intersocietal variation in approaching and performing LC, in the use of visualisation aids, and in the application of safety concepts. Limited papers offer guidelines based on robust data and a timid recognition of the human factors and ergonomic concepts in improving the outcomes associated with difficult cholecystectomies. This paper highlights the most relevant recommendations for dealing with difficult laparoscopic cholecystectomies.

Utility of near infrared fluorescent cholangiography in detecting biliary structures during challenging minimally invasive cholecystectomy

BACKGROUND

Surgeons can minimize the risk of bile duct injury (BDI) during challenging mini-invasive cholecystectomy through technical standardization by means of a precise anatomical landmark identification (Critical View of Safety) and advanced technology for biliary visualization. Among these systems, the adoption of magnified stereoscopic 3-dimensional view provided by robotic platforms and near infrared fluorescent cholangiography (NIRF-C) is the most promising.

METHODS

In this prospective cohort study, we evaluated all consecutive minimally invasive cholecystectomies (laparoscopic and robotic) performed with NIRF-C between May 2022 and January 2023 at General Surgery Unit, Department of Health Sciences, University of Milan, San Paolo Hospital (Milan, Italy). Inclusions criteria were as follows: (1) acute cholecystitis (emergency group), (2) history of chronic cholecystitis or complicated cholelithiasis (deferred urgent group), (3) difficult cases (patients affected by cirrhosis, with scleroatrophic gallbladder or BMI > 35 kg/m2). For each group, the detection rate and visualization order of the main biliary structures were reported (cystic duct, CD; common hepatic duct, CHD; common bile duct, CBD; and CD-CHD junction).

RESULTS

A total of 101 consecutive patients were enrolled, including 83 laparoscopic and 18 robotic cholecystectomies. All patients were stratified into three subgroups: (a) emergency group (n = 33, 32.7%), (b) deferred urgent group (n = 46, 45.5%), (c) difficult group (n = 22, 21.8%). Visualization of at least one biliary structure was possible in 94.1% of cases (95/101). Interestingly, all four main structures were detected in 43.6% of cases (44/101). The CD was the structure identified most frequently, being recognized in 91/101 patients (90.1%), followed by CBD (83.2%), CHD (62.4%), and CD-CHD junction (52.5%). In the subset of patients that underwent emergency surgery for AC, the CD-CHD confluence was identified in only 45.5% of cases. However, early and precise identification of CBD (75.8%) and CD (87.9%) allowed safe isolation, clipping, and transection of the cystic duct. In the deferred urgent group, the CBD and the CD were easily identified as first structure in a high percentage of cases (65.2% and 41.3% respectively), whereas the CD-CHD junction was the third structure to be identified in 67.4% of cases, the highest value among the three subgroups. In the difficult group, NIRF-C did not prove to be a useful tool for biliary visualization. The rates of failure of visualization were elevated: CBD (27.3%), CD (18.2%), CHD (54.5%), and CD-CHD (68.2%).

CONCLUSIONS

NIRF-C is a powerful real-time diagnostic tool to detect CBD and CD during minimally invasive cholecystectomy, especially when inflammation due to acute or chronic cholecystitis subverted the anatomy of the hepatoduodenal ligament.

How to achieve the critical view of safety for safe laparoscopic cholecystectomy: Technical aspects

Laparoscopic cholecystectomy is associated with a higher incidence of biliary/vasculobiliary injuries than open cholecystectomy. Anatomical misperception is the most common underlying mechanism of such injuries. Although a number of strategies have been described to prevent these injuries, critical view of safety method of structural identification seems to be the most effective preventive measure. The critical view of safety can be achieved in the majority of cases during laparoscopic cholecystectomy. It is highly recommended by various guidelines. However, its poor understanding and low adoption rates among practicing surgeons have been global problems. Educational intervention and increasing awareness about the critical view of safety can increase its penetration in routine surgical practice. In this article, a technique of achieving critical view of safety during laparoscopic cholecystectomy is described with the aim to enhance its understanding among general surgery trainees and practicing general surgeons.

SurgSmart: an artificial intelligent system for quality control in laparoscopic cholecystectomy: an observational study

BACKGROUND

The rate of bile duct injury in laparoscopic cholecystectomy (LC) continues to be high due to low critical view of safety (CVS) achievement and the absence of an effective quality control system. The development of an intelligent system enables the automatic quality control of LC surgery and, eventually, the mitigation of bile duct injury. This study aims to develop an intelligent surgical quality control system for LC and using the system to evaluate LC videos and investigate factors associated with CVS achievement.

MATERIALS AND METHODS

SurgSmart, an intelligent system capable of recognizing surgical phases, disease severity, critical division action, and CVS automatically, was developed using training datasets. SurgSmart was also applied in another multicenter dataset to validate its application and investigate factors associated with CVS achievement.

RESULTS

SurgSmart performed well in all models, with the critical division action model achieving the highest overall accuracy (98.49%), followed by the disease severity model (95.45%) and surgical phases model (88.61%). CVSI, CVSII, and CVSIII had an accuracy of 80.64, 97.62, and 78.87%, respectively. CVS was achieved in 4.33% in the system application dataset. In addition, the analysis indicated that surgeons at a higher hospital level had a higher CVS achievement rate. However, there was still considerable variation in CVS achievement among surgeons in the same hospital.

CONCLUSIONS

SurgSmart, the surgical quality control system, performed admirably in our study. In addition, the system's initial application demonstrated its broad potential for use in surgical quality control.

Initial management of suspected biliary injury after laparoscopic cholecystectomy

Although rare, iatrogenic bile duct injury (BDI) after laparoscopic cholecystectomy may be devastating to the patient. The cornerstones for the initial management of BDI are early recognition, followed by modern imaging and evaluation of injury severity. Tertiary hepato-biliary centre care with a multi-disciplinary approach is crucial. The diagnostics of BDI commences with a multi-phase abdominal computed tomography scan, and when the biloma is drained or a surgical drain is put in place, the diagnosis is set with the help of bile drain output. To visualize the leak site and biliary anatomy, the diagnostics is supplemented with contrast enhanced magnetic resonance imaging. The location and severity of the bile duct lesion and concomitant injuries to the hepatic vascular system are evaluated. Most often, a combination of percutaneous and endoscopic methods is used for control of contamination and bile leak. Generally, the next step is endoscopic retrograde cholangiography (ERC) for downstream control of the bile leak. ERC with insertion of a stent is the treatment of choice in most mild bile leaks. The surgical option of re-operation and its timing should be discussed in cases where an endoscopic and percutaneous approach is not sufficient. The patient's failure to recover properly in the first days after laparoscopic cholecystectomy should immediately raise suspicion of BDI and this merits immediate investigation. Early consultation and referral to a dedicated hepato-biliary unit are essential for the best outcome.

Major iatrogenic bile duct injury during elective cholecystectomy: a Czech population register-based study

PURPOSE

Bile duct injury (BDI) remains the most serious complication following cholecystectomy. However, the actual incidence of BDI in the Czech Republic remains unknown. Hence, we aimed to identify the incidence of major BDI requiring operative reconstruction after elective cholecystectomy in our region despite the prevailing modern 4 K Ultra HD laparoscopy and Critical View of Safety (CVS) standards implemented in daily surgical practice among the Czech population.

METHODS

In the absence of a specific registry for BDI, we analysed data from The Czech National Patient Register of Reimbursed Healthcare Services, where all procedures are mandatorily recorded. We investigated 76,345 patients who were enrolled for at least a year and underwent elective cholecystectomy during the period from 2018-2021. In this cohort, we examined the incidence of major BDI following the reconstruction of the biliary tract and other complications.

RESULTS

A total of 76,345 elective cholecystectomies were performed during the study period, and 186 major BDIs were registered (0.24%). Most elective cholecystectomies were performed laparoscopically (84.7%), with the remaining open (15.3%). The incidence of BDI was higher in the open surgery group (150 BDI/11700 cases/1.28%) than in laparoscopic cholecystectomy (36 BDI/64645 cases/0.06%). Furthermore, the total hospital stays with BDI after reconstruction was 13.6 days. However, the majority of laparoscopic elective cholecystectomies (57,914, 89.6%) were safe and standard procedures with no complications.

CONCLUSION

Our study corroborates the findings of previous nationwide studies. Therefore, though laparoscopic cholecystectomy is reliable, the risks of BDI cannot be eliminated.

Fluorescence Cholangiography Using Indocyanine Green Improves the Identification of Biliary Structures During Laparoscopic Cholecystectomy

BACKGROUND

This cross-sectional survey aimed to determine whether fluorescence cholangiography using indocyanine green (ICG-FC) can improve the detection of the cystic duct and the main bile duct during laparoscopic cholecystectomy (LC).

METHODS

The survey was distributed to 214 surgeons (residents/faculties) in 2021. The confidence in the identification of the cystic duct and of the main bile duct was elicited on a 10-point Likert scale before/after the use of ICG-FC. This was repeated for three LCs ranging from a procedure deemed easy to a LC for acute cholecystitis.

RESULTS

There were 149 responses. ICG-FC increased the responders' confidence in identifying the cystic duct, raising the median value from 6 (IQR, 5-8) with white light up to 9 (IQR, 9-10) with ICG-FC (paired p < 0.001). This increase was even more evident when identifying the main bile duct, where the median confidence value increased from 5 (IQR, 4-7) with white light to 9 (IQR, 8-10) with the use of ICG-FC (p < 0.001). ICG-FC significantly increased the detection of residents of the main bile duct in case of intermediate difficulty LCs and in LCs for acute cholecystitis.

CONCLUSIONS

The results support that the use of near-infrared imaging can ameliorate detection of biliary structures, especially of the main bile duct and this was particularly true for young surgeons and in more complex situations.

Effectiveness of no drainage after elective day-case laparoscopic cholecystectomy, even with intraoperative gallbladder perforation: a randomized controlled trial

BACKGROUND

Laparoscopic cholecystectomy (LC) has been carried out as day-case surgery. Current guidelines do not mention the role of drainage after LC. In particular, data stay blank with no prospective study on drainage management when gallbladder perforation (GP) accidentally occurs intraoperatively.

METHODS

A randomized controlled trial was conducted to compare clinical outcomes of drainage and no drainage after elective day-case LC. Intraoperative GP was recorded. The primary and secondary outcomes were major and minor complications, respectively.

RESULTS

Two hundred patients were randomized. No major complications occurred in either group. In secondary outcomes, nausea/vomiting, pain, hospital stay, and cost were similar in the drainage group and no drainage group; postoperative fever, WBC, and CRP levels were significantly lower in the no drainage group. GP occurred in 32 patients. Male patients with higher BMI and CRP and abdominal pain within 1 month were more likely to occur GP. Subgroup analysis of GP, primary outcomes, and most secondary outcomes had no difference. Postoperative WBC and CRP were higher in the drainage group. Postoperative fever occurred in 63 patients. Univariate analysis of fever showed that blood loss, drainage, postoperative WBC, CRP, and hospital stay were significant. Multivariable logistic regression analysis demonstrated that drainage was an independent risk factor for fever after LC (OR 3.418, 95% CI 1.392-8.390; p = 0.007).

CONCLUSIONS

No drainage after elective day-case LC is safe and associated with fewer complications, even in intraoperative GP. The trial proves that drainage is an independent risk factor for postoperative fever. The use of a drain after LC may lead to an unsuccessful day-case procedure by causing fever, elevated CRP, and extended hospital stay (NCT03909360).

Length of the Remnant Cystic Duct and Bile Duct Stone Recurrence: a Case‒Control Study

BACKGROUND

Since the introduction of the Critical View of Safety approach in laparoscopic cholecystectomy, exposure of the common bile duct, and common hepatic duct is not recommended, therefore, the length of the cystic duct remnant is no longer controlled. The aim of this case‒control study is to evaluate the relationship between the length of the cystic duct remnant and the risk for bile duct stone recurrence after cholecystectomy.

METHODS

All MRIs with dedicated sequences of the biliary tract taken between 2010 and 2020 from patients who underwent prior cholecystectomy were reviewed. The length of the cystic duct remnant was measured and compared between the patients with and without bile duct stones using multivariate logistic regression analysis.

RESULTS

A total of 362 patients were included in this study, 23.5% of whom had bile duct stones on MRI. The cystic duct remnant was significantly longer in the patients with stones than in the control group (median 31 mm versus 18 mm, P < 0.001). In the MRIs performed > 2 years after cholecystectomy, the cystic duct remnant was also significantly longer in the patients with bile duct stones (median 32 mm versus 21 mm, P < 0.001). A cystic duct remnant ≥ 15 mm in length increased the odds of stones (OR = 2.3, P = 0.001). Overall, the odds of bile duct stones increased with an increasing cystic duct remnant length (≥ 45 mm, OR = 5.0, P < 0.001).

CONCLUSIONS

An excessive cystic duct remnant length increases the odds of recurrent bile duct stones after cholecystectomy.

Critical View of Safety in Laparoscopic Cholecystectomy: A Systematic Review of Current Evidence and Future Perspectives

BACKGROUND

The Critical View of Safety (CVS) has been increasingly recognised as the standard method for identification of the cystic structures, to prevent vasculobiliary injuries during laparoscopic cholecystectomy, however, its adoption has been anything but universal. A significant proportion of surgeons has a poor understanding of the three requirements. To bridge this gap between theory and practice, we aimed to summarise the available evidence on CVS, emphasising on current debates and future perspectives.

METHOD

We systematically reviewed the literature (1995-2021), to identify studies reporting on the CVS. Eligible articles were classified according to methodology and key idea. A quantitative analysis was performed to evaluate effectiveness of the CVS in preventing bile duct injury (BDI).

RESULTS

150 relevant articles were identified, focusing on six main points, (1) safety and effectiveness, (2) intraoperative documentation, (3) complementary imaging techniques, (4) bail-out alternatives, (5) adoption among surgeons, and (6) education and training. The quantitative analysis included 11 studies, with 10,938 cases. Overall, the CVS was achieved in 92.5%. Conversion rate was 4.8%. CVS-related BDI was 0.09% (0.05% technical errors and 0.04% misidentification errors).

CONCLUSION

Routine application of the CVS reduces BDI, but does not eliminate them altogether. Besides operative notes, the CVS should be documented by an imaging modality of sufficient quality. When the CVS cannot be safely established, the threshold for bail-out alternatives or complementary imaging should be low. Adoption by the surgical community worldwide shows great variability and focus should be placed on training through structured educational modules.

Near-infrared fluorescence cholangiography assisted laparoscopic cholecystectomy (FALCON): an international multicentre randomized controlled trial

AIM

To assess the added value of Near InfraRed Fluorescence (NIRF) imaging during laparoscopic cholecystectomy.

METHODS

This international multicentre randomized controlled trial included participants with an indication for elective laparoscopic cholecystectomy. Participants were randomised into a NIRF imaging assisted laparoscopic cholecystectomy (NIRF-LC) group and a conventional laparoscopic cholecystectomy (CLC) group. Primary end point was time to 'Critical View of Safety' (CVS). The follow-up period of this study was 90 postoperative days. An expert panel analysed the video recordings after surgery to confirm designated surgical time points.

RESULTS

A total of 294 patients were included, of which 143 were randomized in the NIRF-LC and 151 in the CLC group. Baseline characteristics were equally distributed. Time to CVS was on average 19 min and 14 s for the NIRF-LC group and 23 min and 9 s for the CLC group (p 0.032). Time to identification of the CD was 6 min and 47 s and 13 min for NIRF-LC and CLC respectively (p < 0.001). Transition of the CD in the gallbladder was identified after an average of 9 min and 39 s with NIRF-LC, compared to 18 min and 7 s with CLC (p < 0.001). No difference in postoperative length of hospital stay nor occurrence of postoperative complications was found. ICG related complications were limited to one patient who developed a rash after injection of ICG.

CONCLUSION

Use of NIRF imaging in laparoscopic cholecystectomy provides earlier identification of relevant extrahepatic biliary anatomy: earlier achievement of CVS, cystic duct visualisation and visualisation of both cystic duct and cystic artery transition into the gallbladder.

Use of Critical View of Safety and Proctored Preceptorship in Preventing Bile Duct Injury During Laparoscopic Cholecystectomy-Experience of 3726 Cases From a Tertiary Care Teaching Institute

INTRODUCTION

Bile duct injury (BDI) continues to occur despite technological advances and improvements in surgical training over the past 2 decades. This study was conducted to audit our data on laparoscopic cholecystectomies performed over the past 2 decades to determine the role of Critical View of Safety (CVS) and proctored preceptorship in preventing BDI and postoperative complications.

MATERIALS AND METHODS

All patients undergoing elective laparoscopic cholecystectomy were analyzed retrospectively. The data were obtained from a prospectively maintained database from January 2004 to December 2019. Proctored preceptorship was used in all cases. Intraoperative details included the number of patients where CVS was defined, number of BDI and conversions. Postoperative outcomes, including hospital stay, morbidity, and bile duct stricture, were noted.

RESULTS

Three thousand seven hundred twenty-six patients were included in the final analysis. Trainee surgeons performed 31.6% of surgeries and 9.5% of these surgeries were taken over by the senior surgeon. A CVS could be delineated in 96.6% of patients. The major BDI rate was only 0.05%.

CONCLUSION

This study reiterates the fact that following the basic tenets of safe laparoscopic cholecystectomy, defining and confirming CVS, and following proctored preceptorship are critical in preventing major BDI.

Bile duct injury in laparoscopic cholecystectomy with a posterior infundibular approach

Aims: Bile duct injury (BDI) in laparoscopic cholecystectomy (LC) has a significant impact on morbidity and mortality. Although the critical view of safety (CVS) concept is the most widely supported approach to prevent BDI, alternative approaches are used as well. The aim was to evaluate the incidence, severity, and management of bile duct injury in LC, using a posterior infundibular approach. Methods: This retrospective, monocentric cohort study includes patients who underwent LC for gallstone disease. Data were collected in a prospectively maintained database. Patients with BDI were identified and were analyzed in-depth. Results: Between 1999 and 2018, 8389 consecutive patients were included (M/F 3288/5101; mean age 55 (standard deviation; SD ± 17) years). Mean length of postoperative hospital stay was two days (SD ± 4). Fourteen patients died after LC and 21 patients were identified with BDI. Seventeen BDI (81%) patients were managed minimally invasive (14 endoscopic, 3 laparoscopic), and 4 patients via laparotomy (3 hepaticojejunostomy, 1 primary suture). Severe complications (Clavien-Dindo ≥3) after BDI repair were observed in 6 patients. There was no BDI-related mortality. Median follow-up time was 113 months (range 5–238). Conclusion: A posterior infundibular approach in LC was associated with a low incidence of BDI and no BDI-related mortality.

Efficacy of bailout surgery for preventing intraoperative biliary injury in acute cholecystitis

BACKGROUND

Bailout surgery (BOS; partial cholecystectomy, open conversion, and fundus-first approach) has been recommended for difficult cases to ensure safe performance of cholecystectomy. However, the efficacy of BOS for preventing intraoperative massive bleeding and bile duct injury (BDI) remains unclear, especially in the context of acute cholecystitis (AC). This study aimed to retrospectively validate the feasibility of BOS for AC.

METHODS

We enrolled 479 patients who underwent emergency cholecystectomies for AC between 2011 and 2021. Univariate and multivariate analyses were performed to detect the risk factors for BOS in patients with AC. Perioperative variables were compared between patients who underwent total cholecystectomy (TC) and those who underwent BOS. Propensity score matching analysis was performed to compare the two groups.

RESULTS

Significant differences in American Society of Anesthesiologists physical status and Charlson Comorbidity Index scores, TG18 severity grading, white blood cell count, and albumin and C-reactive protein (CRP) levels were found between the TC and BOS groups. Preoperative CT imaging demonstrated severe inflammation evidenced by gallbladder wall thickness, enhancement of the liver bed, and duodenal edema in the BOS group compared to the TC group. Postoperative complications were significantly higher in the BOS group than in the TC group. Further, BDI was completely prevented by BOS. Multivariate analysis identified TG18 grade ≥ II, CRP ≥ 7.7, and duodenal edema as independent risk factors for BOS. After PSM analysis, postoperative complications were not worse in patients who underwent BOS rather than TC. Among BOS procedures, laparoscopic BOS (lap-BOS) was the most efficacious in preventing intraoperative blood loss and postoperative bile leakage.

CONCLUSION

Severity grading > II, elevated CRP levels, or duodenum edema revealed by CT were determined to be risk factors impeding total cholecystectomy. BOS is a safe, feasible, and efficacious procedure for preventing BDI. Among BOS procedures, lap-BOS showed better postoperative outcomes.

Evaluation of the knowledge of the critical view of safety and recognition of the transoperative complexity during the laparoscopic cholecystectomy

INTRODUCTION

Since the establishment of the Critical view of safety (CVS), different strategies have been created such as bailout procedures (SC, subtotal cholecystectomy), classifications for preoperative and intraoperative complexity (The Parkland grading scale, PGS) and objective evaluation of the CVS (doublet score, DS) to establish a "Culture of Safety in Cholecystectomy, COSIC"; to avoid complications.

METHODS

A multiple choice questionnaire was applied to residents and graduated surgeons from different Hospitals in Mexico during different national meetings; evaluating the knowledge of this different concepts (CVS, SC, PGS, DS), univariate logistic regression was used to assess the association of the knowledge with adverse events (AE) like the Bile duct injury.

RESULTS

A total of 744 questionnaires were evaluated; 284 (38.17%) women and 460 (61.83%) men; 436 (58.6%) were residents and 308 (41.4%) graduated surgeons. 708 (95.16%) reported knowing the CVS; however, only (51.98%, p ≤ 0.001) defined the concept correctly, while 136 (18.28%) reported knowing the DS, but only 44 (5.91%) defined it correctly. Regarding the PGS, 398 (53.49%) mentioned knowing it, but only 262 defined it correctly. The concept of SC 642 (86.29%) reported knowing it; however, only (56.7%, p ≤ 0.001) correctly defined the techniques, being the reconstituting technique the preferred one (42.37% vs 34.89%). In this survey, the correct knowledge of the CVS (OR 0.47, p < 0.001), the subtotal techniques (OR 0.71 p = 0.07), the DS (OR 0.48 p < 0.001) and of the PGS (OR 0.28, p < 0.001) decreased the risk of presenting BDI.

CONCLUSION

Despite the COSIC and the timing of publication of the CVS; the percentage of people who can correctly define basic safety concepts is low among residents and licensed surgeons. Therefore, it is important to emphasize the dissemination of these concepts to obtain safe LC and thus reduce the incidence of complications.

Critical View of Safety in Laparoscopic Cholecystectomy: A Word of Caution in Cases of Aberrant Anatomy

Introduction  To avoid vasculobiliary injuries, the Critical View of Safety (CVS) technique is strongly recommended during dissection of the hepatocystic triangle. It entails three basic steps as follows: (1) complete clearance of the hepatocystic triangle of fibrofatty tissue, (2) separation of the lower part of the gallbladder from the cystic plate, so that (3) two and only two structures are seen entering the gallbladder.

Case History  In this video vignette, we present the case of an aberrant hepatic artery, coursing subserosally parallel to the gallbladder wall. Despite presumably achieving all three CVS requirements, the surgeon did not proceed to clipping and dividing the two structures, preventing a major vascular injury. Due to its unusually large caliber, the artery was carefully dissected, and multiple smaller branches to the gallbladder were ligated instead, until it was definitively identified entering into the hepatic parenchyma of segments IVb–V.

Discussion  The CVS approach was originally conceived as a means for the conclusive recognition of the cystic duct and artery to prevent misidentification errors. However, in such cases of extreme anatomical variations, the CVS may indeed have certain limitations. Therefore the surgeon should always maintain a high degree of suspicion and a low threshold for alternative bail-out options.

Is fundus first laparoscopic cholecystectomy a better option than conventional laparoscopic cholecystectomy for difficult cholecystectomy? A systematic review and meta-analysis

The gallstone disease prevalence is up to 27% in the general adult population. Though most of the patients are asymptomatic, about 1-4% of these patients became symptomatic every year and will require treatment. Fundus first laparoscopic cholecystectomy (FFLC) was first reported by Cooperman in 1990 when he utilized the approach to safely perform LC for patients with acute cholecystitis and dense adhesion around the calot's triangle which precluded safe dissection. Some surgeons reported that the FFLC may be quicker than the traditional dissection starting at the Calot's triangle, although no randomized trial has been undertaken to confirm that. We aim to perform this systematic review and meta-analysis to compare outcome of fundal first laparoscopic cholecystectomy with conventional laparoscopic cholecystectomy. Three reviewers independently searched the Pubmed, medline, google schoolar, Cochrane library and Embase databases for prospective or retrospective articles comparing outcomes of fundus first LC and conventional LC. The search terms were "retrograde cholecystectomy", "antegrade cholecystectomy", "fundus first cholecystectomy", "fundus down cholecystectomy", and "dome down cholecystectomy". Studies were selected based on predetermined criteria and data were extracted from the study for meta-analysis. Twelve studies were included for meta-analysis. Our analysis revealed that FFLC is associated with less conversion to open surgery, less time of surgery, less risk of bile duct injuries and shorter duration of hospital stay compared conventional cholecystectomy in patients with difficult cholecystectomy. In conclusion, fundus first laparoscopic cholecystectomy is a safer alternative to conventional laparoscopic cholecystectomy in patients with difficult cholecystectomy.

An additional port in difficult laparoscopic cholecystectomy for surgical safety

BACKGROUND

Tokyo Guidelines 2018, clinical practice guidelines for acute cholangitis and cholecystitis, recommend bailout procedures to prevent bile duct injury (BDI) during laparoscopic cholecystectomy (LC) for difficult gallbladder. We first insert an additional port (AP) for difficult gallbladder that may require bailout procedures. Because the usefulness of an AP during LC is unclear, we therefore examined the efficacy of the AP during LC in this study.

METHODS

Data were collected from 115 patients who underwent LC for acute cholecystitis in our department. The indications for AP were excessive bleeding, scarring, and poor visual field around Calot's triangle. AP was inserted into the right middle abdomen so as not to interfere with other trocars and was used by the assistant. Surgical outcomes were evaluated based on AP use during LC.

RESULTS

AP was inserted in 19 patients during LC (AP group). The indications for AP were excessive bleeding in nine patients, scarring around Calot's triangle in seven patients, and poor visual field around Calot's triangle in three patients. Open conversion was performed in two patients in the non-AP group. BDI occurred in one patient in the non-AP group. In patients with Difficulty Score 3, operation time was significantly shorter (P = .038) and Critical View of Safety (CVS) score was significantly higher in the AP group (P = .046).

CONCLUSION

AP is useful in patients with excessive bleeding to shorten operation time and increase the CVS score. AP may be one useful option for difficult gallbladder.

Bile Leak Due to Luschka Duct Injury After Laparoscopic Cholecystectomy: A Case Report

Bile leak is a common complication after laparoscopic cholecystectomy. Anatomical variations in the biliary tree can go unnoticed by the surgical team and cause complications such as this. This case report presents a patient admitted to the emergency department a week after a laparoscopic cholecystectomy due to abdominal pain and nausea. After a computed tomography, the patient was brought to the operating room for an exploratory laparoscopy, where an injured Luschka duct was found. The biliary tree has many variations that the surgeon should be aware of to minimize the risk of complications of this nature after laparoscopic cholecystectomy. There are imagining techniques with various grades of effectiveness, but in the end, the surgeon’s expertise and experience are the main factors in avoiding these complications.

Early versus delayed reconstruction for bile duct injury a multicenter retrospective analysis of a hepatopancreaticobiliary group

Common bile duct injury is a severe complication. It is related to increased rates of morbidity and mortality. Early recognition and on-time diagnosis plus multidisciplinary management of this disease led by a hepatobiliary surgeon show fewer complications rate and best postoperative outcomes. However, no guidelines exist about the proper time of reconstruction. This study aims to describe the experience of a specialized Hepato-Pancreatic-Biliary (HPB) group and to analyze the outcomes regarding the time of bile duct injury (BDI) repair. A multicenter retrospective review of a prospective database was conducted. All the patients older than 18 years old that underwent common bile duct reconstruction between January 2014 and December 2021 were included. Analysis and description of preoperative characteristics and postoperative outcomes were performed. A reconstruction time-based group differentiation was made and analyzed. 44 patients underwent common bile duct reconstruction between January 2014 and December 2021. 56.82% of the patients were female. The mean age was 53.27 years ± 20.7 years. The most common injury was type E2 (29.55%). Hepaticojejunostomy was performed in 81.81% (of the patients. Delayed reconstruction (> 72 h) was performed in the majority of the cases (75.00%) due to delays in the referral centers or poor condition. No statistically significant difference regarding complications in early or delayed BDI reconstruction. The mortality rate was 2.7% (n = 1). 2-year follow-up bilioenteric stenosis was observed in 7 patients. Biloma showed a statistical relationship with complex bile duct injuries (p = 0.02). Bile duct injury is a severe and complex postoperative complication that increases morbidity and mortality rates in the short and long term in patients undergoing cholecystectomy. In our study, there were no statistical differences between the timing of bile duct reconstruction and the postoperative outcomes; we identified the presence of biloma as a statistically related factor associated with complex bile duct injury; however, further prospective or studies with an increased sample size are required to prove our results.

Fluorescence Guided Cholecystectomy by a Single Group: Initial 47 Procedures Experience in Mexico

Introduction

Fluorescence guided surgery (FGS) for biliary surgery uses indocyanine green (ICG), a specific dye that is eliminated almost exclusively by the liver and biliary system, making it very useful for an adequate and safe visualization of biliary tract structures.

Methods

We present our experience with FGS for cholecystectomy multiport and single port, including all patients older than 18 years of age, with diagnosis of cholecystitis (acute and chronic), from October 18, 2018 to December 30, 2021.

Results

A total of 47 patients were managed with FGS cholecystectomy, mean age was 61.2 (± 17.7) years, 31 (65.9%) were female and 16 (34.1%) males. Twenty-four (51.1%) were emergency procedures, due to acute cholecystitis, of which 10 (41.7%) presented with an infected gallbladder (Parkland 3 to 5) and three (12.5%) presented with related acute pancreatitis, the remaining 23 (48.9%) cases were elective surgeries, due to chronic cholecystitis. Visualization of laparoscopic fluorescence of the biliary ducts was achieved in 45 of the 47 patients (95.7%). Mean time for biliary tract structures visual identification was 8 minutes and 40 seconds (± 7 minutes, 20 seconds), fluorescence allowed the visualization of biliary tract anatomical variants in two patients.

Discussion

The reported rate of biliary structures visualization using ICG is relatively variable, ranging from 25% to 100%, in our group it was 95.7% due to our protocol.

Conclusions

ICG utilization for cholecystectomy is very useful and helps for a safe procedure even in difficult surgeries, we believe that it should be used in everyday practice.

Effects of Individualized Nursing Based on Zero-Defect Theory on Perioperative Patients Undergoing Laparoscopic Cholecystectomy

Objective

This study is aimed at analyzing the effects of individualized nursing based on the zero-defect theory on perioperative patients undergoing laparoscopic cholecystectomy.

Methods

174 patients who underwent laparoscopic cholecystectomy from 1st November 2019 to 30th November 2020 were enrolled as the research subjects and randomly divided into control and observation groups. The patients in the control group received conventional perioperative nursing care, and the patients in the observation group were treated with individualized nursing based on the zero-defect theory.

Results

The heart rate, diastolic blood pressure, and systolic blood pressure level of patients in two groups after nursing decreased significantly, and the reduction in the observation group was more significant than that in the control group. The depression and anxiety scores of the two groups after nursing were decreased, and the decrease in the observation group was significantly greater than that in the control group. The time to first postoperative exhaust, return to normal intake, out-of-bed activity, and hospital stay in the observation group was less than that in the control group. The incidence of postoperative complications in the observation group was substantially lower than that in the control group. The satisfaction degree of nursing care in the observation group was significantly higher than that in the control group.

Conclusion

Individualized nursing care based on zero-defect theory can effectively reduce the perioperative psychological stress response of patients with laparoscopic cholecystectomy. It helps to improve the negative emotions of depression and anxiety, promotes the recovery of disease, reduces postoperative complications, and improves nursing satisfaction, which is worthy of clinical promotion.

[Modern principles of safety in laparoscopic cholecystectomy]

Laparoscopic cholecystectomy has many advantages over open surgery. Nevertheless, incidence of intraoperative bile duct injury is consistently higher for laparoscopic technique. This review is devoted to modern principles of identifying the anatomical elements in hepatoduodenal ligament and rules for safe tissue dissection in this area. The last ones mainly consist in formation of «critical view of safety» before clipping and transection of tubular structures. The key for «critical view of safety» is mobilization of fatty and fibrous tissues of hepatocystic triangle starting from the lower third of the gallbladder.

Injuries during Laparoscopic Cholecystectomy: A Scoping Review of the Claims and Civil Action Judgements

BACKGROUND

To define what type of injuries are more frequently related to medicolegal claims and civil action judgments.

METHODS

We performed a scoping review on 14 studies and 2406 patients, analyzing medicolegal claims related to laparoscopic cholecystectomy injuries. We have focalized on three phases associated with claims: phase of care, location of injuries, type of injuries.

RESULTS

The most common phase of care associated with litigation was the improper intraoperative surgical performance (47.6% ± 28.3%), related to a "poor" visualization, and the improper post-operative management (29.3% ± 31.6%). The highest rate of defense verdicts was reported for the improper post-operative management of the injury (69.3% ± 23%). A lower rate was reported in the incorrect presurgical assessment (39.7% ± 24.4%) and in the improper intraoperative surgical performance (21.39% ± 21.09%). A defense verdict was more common in cystic duct injuries (100%), lower in hepatic bile duct (42.9%) and common bile duct (10%) injuries.

CONCLUSIONS

During laparoscopic cholecystectomy, the most common cause of claims, associated with lower rate of defense verdict, was the improper intraoperative surgical performance. The decision to take legal action was determined often for poor communication after the original incident.

Intraoperative Time-Out to Promote the Implementation of the Critical View of Safety in Laparoscopic Cholecystectomy: A Video-Based Assessment of 343 Procedures

BACKGROUND

The critical view of safety (CVS) is poorly adopted in surgical practices although it is ubiquitously recommended to prevent major bile duct injuries during laparoscopic cholecystectomy (LC). This study aims to investigate whether performing a short intraoperative time out can improve CVS implementation.

STUDY DESIGN

In this before versus after study, surgeons performing LCs at an academic center were invited to use a 5-second long time out to verify CVS before dividing the cystic duct (5-second rule). The primary aim was to compare the rate of CVS achievement for LCs performed in the year before versus the year after implementation of the 5-second rule. The CVS achievement rate was computed after exclusion of bailout procedures using a mediated video-based assessment made by two independent reviewers. Clinical outcomes, LC workflows, and postoperative reports were also compared.

RESULTS

343 of the 381 LCs performed between December 2017 and November 2019 (171 before and 172 after implementation of the 5-second rule) were analyzed. The 5-second rule was associated with a significantly increased rate of CVS achievement (15.9 vs. 44.1% before vs. after the 5-second rule, respectively; P<0.001). Significant differences were also observed with respect to the rate of bailout procedures (8.2 vs. 15.7%; P=0.04), the median [IQR] time to clip the cystic duct or artery (00:17:26 [00:11:48, 00:28:35] vs. 00:23:12 [00:14:29, 00:31:45] duration; P=0.007), and the rate of postoperative CVS reporting (1.3 vs. 28.8%; P<0.001). Postoperative morbidity was comparable (1.8 vs. 2.3%; P=0.68).

CONCLUSION

Performing a short intraoperative time out was associated with an improved CVS achievement rate. Systematic intraoperative cognitive aids should be studied to sustain the uptake of guidelines.

Initial experience of intraoperative fluorescent cholangiography during laparoscopic cholecystectomy: A retrospective study

Background

Fluorescent cholangiography (FC) during laparoscopic cholecystectomy (LC) is a novel method to facilitate real-time visualization of extrahepatic biliary structures that avoiding risk of bile duct injury. Aims of this study are to investigate the feasibility and the safety of FC during LC.

Method

We evaluated the outcomes of FC during elective LC at our hospital from August 2017 to April 2018. Fifty-five patients who underwent FC during elective LC were enrolled in this study. Demographic and peri-operative data were recorded and analyzed. The primary endpoints were visualization rate of FC during LC. The secondary endpoint was the optimal conditions and technical details for FC included to detect any potential adverse event.

Results

The visualization rate after FC of the cystic duct, common hepatic duct and common bile duct were increased significantly compared to before FC. The identification rate of the cystic duct and common bile duct were not associated with BMI and history of acute cholecystitis.

Conclusions

FC enabled real-time visualization of extrahepatic biliary structures during LC. FC appears to be a safe and efficient approach for elective LC.

•

Bile duct injury is one of the most complication of laparoscopic cholecystectomy.

•

Fluorescent cholangiography is offer real-time detection of the biliary anatomy.

•

Cholangiogram was associated with a low incidence of bile duct injury.

The critical view of safety during laparoscopic cholecystectomy: Strasberg Yes or No? An Italian Multicentre study

BACKGROUND

Laparoscopic cholecystectomy is considered the gold standard for the treatment of gallbladder lithiasis; nevertheless, the incidence of bile duct injuries (BDI) is still high (0.3-0.8%) compared to open cholecystectomy (0.2%). In 1995, Strasberg introduced the "Critical View of Safety" (CVS) to reduce the risk of BDI. Despite its widespread use, the scientific evidence supporting this technique to prevent BDI is controversial.

METHODS

Between March 2017 and March 2019, the data of patients submitted to laparoscopic cholecystectomy in 30 Italian surgical departments were collected on a national database. A survey was submitted to all members of Italian Digestive Pathology Society to obtain data on the preoperative workup, the surgical and postoperative management of patients and to judge, at the end of the procedure, if the isolation of the elements was performed according to the CVS. In the case of a declared critical view, iconographic documentation was obtained, finally reviewed by an external auditor.

RESULTS

Data from 604 patients were analysed. The study population was divided into two groups according to the evidence (Group A; n = 11) or absence (Group B; N = 593) of BDI and perioperative bleeding. The non-use of CVS was found in 54.6% of procedures in the Group A, and 25.8% in the Group B, and evaluating the operator-related variables the execution of CVS was associated with a significantly lower incidence of BDI and intraoperative bleeding.

CONCLUSIONS

The CVS confirmed to be the safest technique to recognize the elements of the Calot triangle and, if correctly performed, it significantly impacted on preventing intraoperative complications. Additional educational programs on the correct application of CVS in clinical practice would be desirable to avoid extreme conditions that may require additional procedures.

Knowledge of the Culture of Safety in Cholecystectomy (COSIC) Among Surgical Residents: Do We Train Them Well For Future Practice?

BACKGROUND

Biliary injury is the most feared complication of laparoscopic cholecystectomy (LC). This study aimed to assess the awareness of culture of safety in cholecystectomy (COSIC) concept among the surgical residents in India.

METHODS

A manual survey was conducted among general surgery residents attending a postgraduate course. Survey consisted of questions pertaining to knowledge of various aspects of COSIC, e.g., the critical view of safety (CVS).

RESULTS

With a response rate of 51%, 259 residents were included in this study. They had more exposure to LC (63.3% assisted / performed > 15 LC) than to open cholecystectomy (60.6% assisted / performed ≤ 10 open cholecystectomy). The majority (80.2%) clearly differentiated Calot triangle from the hepatocystic triangle (HCT). However, 25.8% could not correctly define HCT. The majority (88.5%) had seen the Rouviere's sulcus during LC. While almost all (98.4%) respondents claimed to know about the segment 4, only 41.9% could correctly describe it. Awareness of the correct direction of the gallbladder retraction was lower for the infundibulum (53.5%) than for fundus (89.2%). The majority (88.3%) claimed to know CVS but only 11.5% knew it correctly, and 15.1% described > 3 components. The majority (78.7%) practiced to identify the cystic duct-common bile duct junction. Awareness was low for time-out (28.1%), intraoperative cholangiography (20.6%), bailout techniques (18.9%), and for overall COSIC concept (15.7%).

CONCLUSIONS

Knowledge of COSIC among surgical residents seems to be suboptimal, especially for the CVS, time-out, bailout techniques, and overall concept of COSIC. Strategies to educate them more effectively about COSIC are highly imperative to train them well for future practice.