Frequency of biliary complications after laparoscopic cholecystectomy detected by ERCP: experience at a large tertiary referral center

LapBot-Safe Chole: validation of an artificial intelligence-powered mobile game app to teach safe cholecystectomy

BACKGROUND

Gaming can serve as an educational tool to allow trainees to practice surgical decision-making in a low-stakes environment. LapBot is a novel free interactive mobile game application that uses artificial intelligence (AI) to provide players with feedback on safe dissection during laparoscopic cholecystectomy (LC). This study aims to provide validity evidence for this mobile game.

METHODS

Trainees and surgeons participated by downloading and playing LapBot on their smartphone. Players were presented with intraoperative LC scenes and required to locate their preferred location of dissection of the hepatocystic triangle. They received immediate accuracy scores and personalized feedback using an AI algorithm ("GoNoGoNet") that identifies safe/dangerous zones of dissection. Player scores were assessed globally and across training experience using non-parametric ANOVA. Three-month questionnaires were administered to assess the educational value of LapBot.

RESULTS

A total of 903 participants from 64 countries played LapBot. As game difficulty increased, average scores (p < 0.0001) and confidence levels (p < 0.0001) decreased significantly. Scores were significantly positively correlated with players' case volume (p = 0.0002) and training level (p = 0.0003). Most agreed that LapBot should be incorporated as an adjunct into training programs (64.1%), as it improved their ability to reflect critically on feedback they receive during LC (47.5%) or while watching others perform LC (57.5%).

CONCLUSIONS

Serious games, such as LapBot, can be effective educational tools for deliberate practice and surgical coaching by promoting learner engagement and experiential learning. Our study demonstrates that players' scores were correlated to their level of expertise, and that after playing the game, most players perceived a significant educational value.

Effects of Indocyanine Green (ICG) Imaging-Assisted Cholecystectomy on Intraoperative and Postoperative Complications: A meta-Analysis

BACKGROUND

Accurate recognition of Calot's triangle during cholecystectomy is important in preventing intraoperative and postoperative complications. The use of indocyanine green (ICG) fluorescence imaging has become increasingly prevalent in cholecystectomy procedures. Our study aimed to evaluate the specific effects of ICG-assisted imaging in reducing complications.

MATERIALS AND METHODS

A comprehensive search of databases including PubMed, Web of Science, Europe PMC, and WANFANGH DATA was conducted to identify relevant articles up to July 5, 2023. Review Manager 5.3 software was applied to statistical analysis.

RESULTS

Our meta-analysis of 14 studies involving 3576 patients compared the ICG group (1351 patients) to the control group (2225 patients). The ICG group had a lower incidence of postoperative complications (4.78% vs 7.25%; RR .71; 95%CI: .54-.95; P = .02). Bile leakage was significantly reduced in the ICG group (.43% vs 2.02%; RR = .27; 95%CI: .12-.62; I2 = 0; P = .002), and they also had a lower bile duct drainage rate (24.8% vs 31.8% RR = .64, 95% CI: .44-.91, P = .01). Intraoperative complexes showed no statistically significant difference between the 2 groups (1.16% vs 9.24%; RR .17; 95%CI .03-1.02), but the incidence of intraoperative bleeding is lower in the ICG group.

CONCLUSION

ICG fluorescence imaging-assisted cholecystectomy was associated with a range of benefits, including a lower incidence of postoperative complications, decreased rates of bile leakage, reduced bile duct drainage, fewer intraoperative complications, and reduced intraoperative bleeding.

Evaluating Patient Satisfaction and Quality of Life After Undergoing Laparoscopic Cholecystectomy in Al-Qunfudhah Governorate, Saudi Arabia

BACKGROUND

Gallstone disease, commonly referred to as cholelithiasis, is a prevalent medical condition that has substantial global implications. Due to its numerous benefits, such as cheaper costs and shorter hospital stays, laparoscopic cholecystectomy (LC) has replaced open surgery as the most often performed surgical method for treating a range of biliary problems in wealthy countries. Any medical procedure's long-term patient well-being must be assessed, starting with the quality of life (QoL), patient satisfaction, and postoperative healing.

AIM

The current study aims to evaluate patient satisfaction and QoL after undergoing LC in Al-Qunfudhah Governorate.

METHODS

 A cross-sectional study was conducted targeting all patients who underwent LC in Al-Qunfudhah Governorate during the period from January to March 2024. The online survey was initiated by the study researchers after an intensive literature review and experts' consultation. The validated questionnaire was uploaded online using Google Forms and distributed electronically via social media apps.

RESULTS

The current study included records of 200 participants where the highest proportion falls within the 26 to 35 age group, comprising 57 individuals (28.5%). In terms of gender, males represent the majority, with 109 participants (54.5%). A total of 122 individuals (61.0%) reported being satisfied with their procedures. Conversely, 18 patients (9.0%) expressed dissatisfaction. The majority of participants under investigation expressed satisfaction with their overall QoL after undergoing LC, with 84 patients (42.0%) reporting satisfaction and 67 patients (33.5%) reporting being very satisfied. Additionally, only a small proportion of participants expressed dissatisfaction or very dissatisfaction Conclusion: In summary, the current study demonstrated high satisfaction with the LC treatment and highly reported QoL, which were mostly attributable to a number of factors such as the staff's cooperation, the lack of severe problems, and the sufficiency of the pre-surgery information supplied.

Right Hepatic Artery Pseudoaneurysm Post-laparoscopic Cholecystectomy: A Case Report of Endovascular Stent-Graft Management

Gallstone-related diseases like cholelithiasis contribute significantly to global morbidity and mortality. Laparoscopic cholecystectomy (LC) is the gold standard for gallbladder removal but is associated with rare but severe complications, including hepatic artery pseudoaneurysms (PAs). A 72-year-old female presented with acute abdominal pain and upper gastrointestinal bleeding following a recent LC. Laboratory studies confirmed anemia with a hemoglobin level of 10 g/dL. Liver function tests were deranged, showing elevated alanine aminotransferase (ALT) at 209 U/L, aspartate aminotransferase (AST) at 472 U/L, total bilirubin levels at 3.29 mg/dL, and direct bilirubin levels at 2.7 mg/dL. A contrast-enhanced computed tomography scan revealed a PA adjacent to the right hepatic artery. Given the strong suspicion of a hepatic PA as the source of her symptoms, an endovascular stent was placed by an interventional radiologist. Post-procedure, the patient showed a favorable clinical course with cessation of symptoms and was discharged after eight days. This case emphasizes the importance of early identification of hepatic artery PAs following LC, a potentially life-threatening complication. It also suggests that endovascular stent placement can be an effective alternative to traditional transarterial embolization for managing these PAs. Additional research is needed to evaluate the long-term effectiveness and safety of these two methods in comparison.

Lower myocardial infarction and all-cause mortality with laparoscopic cholecystectomy compared with open cholecystectomy

Aim: We compared inpatient outcome data of open (OC) versus laparoscopic cholecystectomy (LC). Patients & methods: We used the National Inpatient Samples database from 2010-2014. Results: LC was done in 340,999 and OC in 68,529 OC patients. In 2010, ST-elevation myocardial infarction (STEMI) prevalence was 0.2 versus 0% (OR: 3.1, CI: 1.7-5.5; p < 0.001), non-STEMI 1 versus 0.4% (OR: 2.5 CI: 2.0-3.0; p < 0001), mortality 3.4 versus 0.4% (OR: 9.2, CI: 7.9-10.6; p < 0001). After multivariate adjustment, OC remained independently associated with STEMI, non-STEMI and all-cause inpatient mortality (mortality multivariate OR: 6.4, CI: 5.5-7.4; p < 0001, STEMI OR: 2.2. CI: 1.2-3.9; p = 0.007, non-STEMI OR: 1.5, CI: 1.3-1.9; p < 0001). Conclusion: OC is independently associated with STEMI, non-STEMI and all-cause inpatient mortality compared with LC.

Hepatico-Duodenal Fistula Following Iatrogenic Strasberg Type E4 Bile Duct Injury: A Case Report

INTRODUCTION

Gallstone disease (GSD) is among the most common disorders worldwide. Gallstones are established in up to 15% of the general population. Laparoscopic cholecystectomy (LC) has become the "gold standard" for treatment of GSD but is associated with a higher rate of certain complications, namely, bile duct injury (BDI). Biliary fistulas (BF) are a common presentation of BDI (44.1% of all patients); however, they are mainly external. Post-cholecystectomy internal BF are exceedingly rare.

CASE REPORT

a 33-year Caucasian female was admitted with suspected BDI after LC. Strasberg type E4 BDI was established on endoscopic retrograde cholangiopancreatography (ERCP). Urgent laparotomy established biliary peritonitis. Delayed surgical reconstruction was planned and temporary external biliary drains were positioned in the right and left hepatic ducts. During follow-up, displacement of the drains occurred with subsequent evacuation of bile through the external fistula, which resolved spontaneously, without clinical and biochemical evidence of biliary obstruction or cholangitis. ERCP established bilio-duodenal fistula between the left hepatic duct (LHD) and duodenum, with a stricture at the level of the LHD. Endoscopic management was chosen with staged dilation and stenting of the fistulous tract over 18 months until fistula maturation and stricture resolution. One year after stent extraction, the patient remains symptom free.

DISCUSSION

Management of post-cholecystectomy BDI is challenging. The optimal approach is determined by the level and extent of ductal lesion defined according to different classifications (Strasberg, Bismuth, Hannover). Type E BDI are managed mainly surgically with a delayed surgical approach generally deemed preferable. Only three cases of choledocho-duodenal fistulas following LC BDI currently exist in the literature. Management is controversial, with expectant approach, surgical treatment (biliary reconstruction), or liver transplantation being described. Endoscopic treatment has not been described; however, in the current paper, it proved to be successful. More reports or larger case series are needed to confirm its applicability and effectiveness, especially in the long term.

Patient-reported outcome, perception and satisfaction after laparoscopic cholecystectomy in Kigali, Rwanda

Background

Laparoscopic surgery is the gold standard for many abdominal surgeries. Laparoscopic programs in low- and middle-income countries (LMICs) and in sub-Saharan Africa face many constraints, although its use is safe, feasible, and clinically beneficial. The authors assessed patient-reported outcomes and the experience of patients operated on at the University Teaching Hospital of Kigali (CHUK).

Methods

This is a retrospective cross-sectional study combining medical data from medical files and information collected from telephone calls to 288 patients who underwent laparoscopic cholecystectomy at CHUK from January 2015 to December 2020.

Results

Among 446 laparoscopic surgeries performed at CHUK over 6 years, cholecystectomies accounted for 64.6 % of cases (288/446). Postoperative complications and mortality after laparoscopic cholecystectomy were low, respectively 1.7 % and 0.7 %, while the median length of stay was 3 days. About 74 % of surveyed patients had never heard of laparoscopic surgery prior to their procedure. Knowledge of laparoscopic surgery was associated with patient education level (p < 0.001). Half of patients had not been involved in the choice of the surgical technique. Overall satisfaction was over 95 % and >90 % of patients consider laparoscopic surgery as the best surgical approach in Rwanda, and for this reason they declared to be ready to promote this new technology despite its higher cost. However, patients reported some weaknesses and made recommendations for improving public awareness of laparoscopy and its benefits, patient-provider relationships, training of surgical workforce, laparoscopic equipment, and infrastructure.

Conclusion

Laparoscopic cholecystectomy can be performed with a low rate of postoperative complications in a resource-limited setting like Rwanda. Patient satisfaction was high, but efforts should be made to improve public awareness of laparoscopic surgery, improve surgical capacity, laparoscopic equipment, and infrastructure.

Do not get stumped: multimodality imaging findings of early and late post-cholecystectomy complications

Cholecystectomy is the most performed intra-abdominal surgical procedure in the US, with 1.2 million performed annually, and is predominantly performed laparoscopically. Although largely safe, laparoscopic cholecystectomy results in higher rates of abdominal symptoms consisting of abdominal pain and dyspepsia, which may persist or recur, collectively known as post-cholecystectomy syndrome. This article aims to (1) provide an overview of post-cholecystectomy syndrome with an emphasis on biliary complications and emergent imaging findings, (2) illustrate the spectrum of imaging findings of early and late post-cholecystectomy complications, (3) enumerate the role of various imaging modalities in evaluating post-cholecystectomy complications and address the role of selective trans-catheter coil embolization in managing bile leaks, and (4) discuss pearls and pitfalls in imaging following cholecystectomy. While common first-line imaging modalities for post-cholecystectomy complications include CT and sonography, ERCP and MRCP can delineate the biliary tree with greater detail. Scintigraphy has a higher sensitivity and specificity than CT or sonography for diagnosing bile leak and may preclude the need for ERCP. Post-operative complications include biliary duct injury or leak, biliary obstruction, remnant gallbladder/cystic duct stones and inflammation, biliary dyskinesia, papillary stenosis, and vascular injury. Subtle cases resulting in lethal outcomes, such as hemorrhage from the gallbladder bed without major vessel injury, have also been described. Cases presented will include biliary complications such as post-cholecystectomy stump cholecystitis, nonbiliary complications such as subcapsular hematoma, and normal post-surgical findings such as oxidized regenerated cellulose. Post-operative biliary complications can cause significant morbidity and mortality, and thus familiarity with the expected post-surgical appearance of the gallbladder fossa and biliary tract, as well as understanding the spectrum of complications and associated multimodality imaging findings, are essential for emergency radiologists and those practicing in the acute care setting to direct appropriate patient management. Furthermore, many of the postoperative complications can be managed by noninvasive percutaneous interventional procedures, from drain placement to cystic artery and cystic duct stump embolization.

Cost-effectiveness analysis of robotic cholecystectomy in the treatment of benign gallbladder disease

BACKGROUND

Laparoscopic cholecystectomy is the current standard of care treatment for benign gallbladder disease. Robotic cholecystectomy is another approach for performing cholecystectomy that offers a surgeon better dexterity and visualization. However, robotic cholecystectomy may increase cost without sufficient evidence to suggest an improvement in clinical outcomes. The purpose of this study was to construct a decision tree model to compare cost-effectiveness of laparoscopic cholecystectomy and robotic cholecystectomy.

METHODS

Complication rates and effectiveness associated with robotic cholecystectomy and laparoscopic cholecystectomy over a 1-year time frame were compared using a decision tree model populated with data from the published literature. Cost was calculated using Medicare data. Effectiveness was represented by quality-adjusted life-years. The primary outcome of the study was incremental cost-effectiveness ratio, which compares the cost per quality-adjusted life-year of the 2 interventions. The willingness-to-pay threshold was set at $100,000/quality-adjusted life-year. Results were confirmed with 1-way, 2-way, and probabilistic sensitivity analyses varying branch-point probabilities.

RESULTS

The studies used in our analysis included 3,498 patients who underwent laparoscopic cholecystectomy, 1,833 patients who underwent robotic cholecystectomy, and 392 patients who required conversion to open cholecystectomy. Laparoscopic cholecystectomy produced 0.9722 quality-adjusted life-years, costing $9,370.06. Robotic cholecystectomy produced an additional 0.0017 quality-adjusted life-years at an additional $3,013.64. These results equate to an incremental cost-effectiveness ratio of $1,795,735.21/quality-adjusted life-year. This exceeds the willingness-to-pay threshold, making laparoscopic cholecystectomy the more cost-effective strategy. Sensitivity analyses did not alter results.

CONCLUSION

Traditional laparoscopic cholecystectomy is the more cost-effective treatment modality for benign gallbladder disease. At present, robotic cholecystectomy is not able to improve clinical outcomes enough to justify its added cost.

Consequences of the spilled gallstones during laparoscopic cholecystectomy: a systematic review

INTRODUCTION

Complications secondary to spilled gallstones can be classified in the category of disease of medical progress because prior to advent of laparoscopic cholecystectomy very few reports published on the topic. The aim of the present study was to investigate the predisposing factors and the complication rate of spilled gallstones during laparoscopic cholecystectomy over the past 21 years.

METHODS

Embase, Pubmed, Medline, Google scholar and Cochrane library were systematically searched for pertinent literature.

RESULTS

Seventy five out of 181 articles were selected including 85 patients; of those 38% were men and 62% women. The median age of the cohort was 64 years old and ranged between 33 and 87 years. Only 23(27%) of the authors reported the incident of spillage of the gallstones during the operation. Time of onset of symptoms varied widely from the second postoperative day to 15 years later. Ten of 85 patients were asymptomatic and diagnosed with spilled gallstones incidentally. The rest of the patients presented with complications of severe morbidity and almost, 87% of the patients needed to be treated with surgical intervention and 12% with US ± CT scan guidance drainage. Only one perioperative death reported.

CONCLUSIONS

Symptomatic patients with lost gallstones present with severe morbidity complications and required mostly major surgical procedures. Therefore, standardisation of the management of spilled gallstones is needed urgently. Hospitals need to review their policy with audits and recommendations and clinical guidelines are needed urgently.

A Rare Case of Portal Vein Thrombosis Following a Successful Laparoscopic Cholecystectomy

The function of the portal vein is to drain the blood mainly from the gastrointestinal tract to the liver and its thrombosis is an extremely unexpected outcome of an uncomplicated laparoscopic cholecystectomy. It is believed to be a rarely reported case to date in non-cirrhotic patients. A female patient, aged 43 years, presented to the surgical outpatient department with unexplained severe abdominal pain soon after laparoscopic cholecystectomy. A relative workup was done and radiological evidence revealed the thrombosis in the distal part of the portal vein at its bifurcation which completely occluded the left branch of the vein. Although rare, portal vein thrombosis should be concluded in the differentials for unexplained causes of abdominal pain in the postoperative period of laparoscopic cholecystectomy.

BILIARY FISTULAS ASSOCIATED WITH LIVER TRANSPLANTATION VERSUS OTHER ETIOLOGIES: WHAT IS THE SUCCESS RATE OF THE ENDOSCOPIC TREATMENT?

Biliary fistulas typically occur as surgical complications after laparoscopic cholecystectomy, liver transplantation, or partial liver resection.

CT findings and outcomes of acute cholecystitis: is additional ultrasound necessary?

BACKGROUND

While ultrasound is often the preferred imaging modality for suspected acute cholecystitis (AC), CT is often the first line study when patients are being evaluated for abdominal pain. The diagnostic value of CT in the setting of AC is controversial, given the prevalent use of additional imaging.

PURPOSE

To evaluate the positive predictive value (PPV) of CT for diagnosing acute cholecystitis (AC) when used as a first line imaging study for evaluating abdominal pain and assess if additional imaging with ultrasound studies provides additional clinically useful information.

MATERIALS AND METHODS

Abnormal gallbladder findings in CT imaging studies were queried in a retrospective study over a 25-month period within a large urban health system. Sonographic (US) studies performed within 72 h of the initial CT were also included. Outcomes were determined by surgical pathology, fluid analysis, and clinical outcomes. Cases were stratified by the interpreting radiologist's subjective confidence level of diagnosing AC, and the PPVs were compared between cases using CT without US and cases with both CT and US.

RESULTS

Of the 468 CT studies meeting criteria, 192 were read as concerning for AC. PPV of CT was 44.7% without US and 50.5% when US was positive, which amounted to an insignificant gain (p = 0.41). When subdividing by confidence level, high-confidence positive CTs demonstrated no significant difference without ultrasound (80%) compared to with ultrasound (75%). Less confident reads in CT demonstrated potential gain from ultrasound; in the case of a "probable" CT impression, PPV increased from 45% without US to 90% with a high-confidence ultrasound impression.

CONCLUSION

Based on current practice within a large health system, CT examinations with high suspicion for AC demonstrated little gain from follow-up ultrasound. However, ultrasound may be of benefit when CT interpretations are less confident but still suspicious for AC.

MRI evaluation of bile duct injuries and other post-cholecystectomy complications

Laparoscopic cholecystectomy is one of the most common procedures performed each year and can be associated with various post-operative complications. Imaging is integral to diagnosis and management of patients with suspected cholecystectomy complications, and a thorough understanding of normal and abnormal biliary anatomy, risk factors for biliary injury, and the spectrum of adverse events is crucial for interpretation of imaging studies. Magnetic resonance cholangiography (MRC) enhanced with hepatobiliary contrast agent is useful in delineating biliary anatomy and pathology following cholecystectomy. In this article, we provide a protocol for contrast-enhanced MR imaging of the biliary tree. We also review the classification and imaging manifestations of post-cholecystectomy bile duct injuries in addition to other complications such as bilomas, retained/dropped gallstones, and vascular injuries.

Patient-specific fluid-structure interaction model of bile flow: comparison between 1-way and 2-way algorithms

Gallbladder disease is one of the most spread pathologies in the world. Despite the number of operations dealing with biliary surgery increases, the number of postoperative complications is also high. The aim of this study is to show the influence of the biliary system pathology on bile flow character and to numerically assess the effect of surgical operation (cholecystectomy) on the fluid dynamics in the extrahepatic biliary tree, and also to reveal the difference between 1-way and 2-way FSI algorithms on the results. Moreover, the bile viscosity and biliary tree geometry influence on the choledynamics were evaluated. Bile velocity, pressure, wall shear stress (WSS), displacements and von Mises stress distributions in the extrahepatic biliary tree are presented, and comparison is made between a healthy and a lithogenic bile. The patient-specific biliary tree model is created using magnetic resonance imaging (MRI) and imported in a commercial finite element analysis software. It is found that in the case of lithogenic bile, velocities have lower magnitude while pressures are higher. Furthermore, stress analysis of the bile ducts shows that the WSS distribution is found mostly prevailing in the common hepatic duct and common bile duct areas. It is shown that when it is necessary to evaluate the bile flow dynamics in urgent medical situations, 1-way analysis is acceptable. Nevertheless, 2-way FSI provides more accurate data, if necessary to evaluate the stress-strain state of bile ducts. The proposed model can be applied to medical practice to reduce the number of post-operative complications.

Use of the self-reported critical view of safety in laparoscopic cholecystectomy during residency

BACKGROUND

Even though the goal of safely performing cholecystectomy is already a priority in general surgical training programs, we aimed to study how many residents and attendings reached the critical view of safety (CVS) in laparoscopic cholecystectomy.

MATERIALS AND METHODS

Retrospective review of prospectively collected data of all patients with biliary surgical conditions, which underwent laparoscopic cholecystectomy and their corresponding postoperative notes with self-reported CVS from May 2019 to May 2020 in an academic hospital. Comparisons of operative variables between postgraduate year and attendings were made.

RESULTS

Laparoscopic cholecystectomy was performed in 126 elective cases (62.6%) and 75 (37.3%) emergency cases. On 105 (83.3%) of the elective cases and on 54 (66.7%) emergency cases, a CVS was successfully performed. PGY3 and PGY5 had higher odds of achieving CVS compared to attendings OR 6.09 (95% CI 2.05 to 8.07) and 4.51 (95% CI 1.0 to 10.20), respectively. Overall, attendings had decreased odds ratio of achieving CVS of 0.488 when compared to all residents. Elective procedures had increased odds ratios of achieving CVS of 3.44 (95% CI 1.52 to 7.74). On elective cases, attendings performed significantly faster procedures when compared to PGY2-4, but not PGY5. No differences were seen between operative speeds between PGY. Third-year residents were identified as having the highest frequency of CVS; however, these differences were not statistically significant. In emergency cases, blood loss, operative time, CVS, and bile duct injuries revealed non-significant differences between operators.

CONCLUSION

CVS was reached significantly more often in elective than in emergency surgeries. There is still a lack of residents and attending surgeons who still failed to complete CVS during LC, highlighting the need for further education. Future studies should be attempted to repeat this study with a larger sample size and multiple coaching sessions to determine long-term efficacy.

The “critical view of safety (CVS)” cannot be applied—What to do? Strategies to avoid bile duct injuries

Laparoscopic cholecystectomy has become the standard procedure worldwide since the early 1990s for those patients whose gallbladder has to be removed as part of their underlying disease (NIH Consensus Statement 1992). The most common complication is iatrogenic bile duct injury, which has not improved significantly since the introduction of open laparoscopic cholecystectomy as compared with open cholecystectomy. The intraoperative injuries are mostly the result of a misinterpretation of anatomical structures due to severe inflammation or topographical variations. In order to minimize this risk, a number of improved operative techniques and behavioral measures have been formulated. Here, we present methodological and operative possibilities as well as techniques that in unclear situations can help to minimize the risk of intraoperative injuries of the biliary tract and the accompanying vascular system.

Management of Postcholecystectomy Biliary Complications: A Narrative Review

Every year approximately 750,000 cholecystectomies are performed in the United States, most of those are performed laparoscopically. Postcholecystectomy complications are not uncommon and lead to increased morbidity and financial burden. Some of the most commonly encountered complications with laparoscopic cholecystectomy include biliary injury (0.08%-0.5%), bile leak (0.42%-1.1%), retained common bile duct stones (0.8%-5.7%), postcholecystectomy syndrome (10%-15%), and postcholecystectomy diarrhea (5%-12%). Endoscopy has an important role in the diagnosis and management of biliary complications and in many cases can provide definitive management. There is no consensus on the best therapeutic approach for biliary complications. Therefore, biliary complications should be approached by an experienced multidisciplinary team. It is important for the gastroenterologist to be familiar with the management of such complications (Visual Abstract, Supplemental Digital content 1, http://links.lww.com/AJG/B544).

The Safety of Laparoscopic Cholecystectomy in the Day Surgery Unit Comparing with That in the Inpatient Unit: A Systematic Review and Meta-Analysis

We aimed to perform a systematic review and meta-analysis on the safety of laparoscopic cholecystectomy performed in the day surgery unit versus those performed in the inpatient unit. Several databases including Ovid Embase, Medline Ovid, Cochrane Central, Web of Science, and Google Scholar were searched from inception through February 2019. Our results revealed that laparoscopic cholecystectomy can be conducted safely and effectively in day surgery units, helping bed shortage.

Postcholecystectomy Biliary Clip Migration Causing Acute Pancreatitis

Postcholecystectomy biliary clip migration is a rare but important cause of acute pancreatitis (AP). We report the case of a patient with laparoscopic cholecystectomy for cholelithiasis with cholecystitis and recurrent AP 15 and 19 months after. Imaging findings were suggestive of biliary clip migration. Suspected mechanisms for endoclip migration-induced AP include migration of the clip at a site of dehiscence and migration. When considering this diagnosis, a plain radiograph may be helpful as a comparison to previous imaging to assess for changes in the number of endoclips present, and proper diagnosis can help lead to appropriate management.

Selective Trans-Catheter Coil Embolization of Cystic Duct Stump in Post-Cholecystectomy Bile Leak

BACKGROUND

Percutaneous drainage is a first-line treatment for bilomas developed post-cholecystectomy in the setting of bile leak from the cystic duct stump. Percutaneous drainage is usually followed by surgical or endoscopic treatment to address the leak.

AIMS

This study aimed to evaluate outcome of selective coil embolization of the cystic duct stump via the percutaneously placed drainage catheters in patients with post-cholecystectomy bile leak.

METHODS

Seven patients with persistent bile leak after laparoscopic cholecystectomy who underwent percutaneous catheter placement for biloma/abscess formation in the region of the gallbladder fossa were followed. These patients underwent selective trans-catheter cystic duct stump coil embolization from Feb 2013 to Feb 2019. Procedural management, complications, and success rates were analyzed.

RESULTS

All patients underwent placement of a percutaneous catheter for drainage of biloma formation in the gallbladder fossa post-cholecystectomy. Selective coil embolization of the cystic duct was performed through the existing percutaneous tract on average 3.5 weeks after percutaneous catheter placement, resulting in resolution of the biloma. All bile leaks were immediately closed. None of the patients showed recurrent bile leak or further clinical symptoms. Coil migration to the common bile duct was diagnosed in a single case, after 2.5 years, with no bile leak reported.

CONCLUSIONS

Selective trans-catheter coil embolization of the cystic stump is a feasible and safe procedure, which successfully seals leaking cystic duct stumps and can circumvent the need for repeat surgical or endoscopic intervention in selected patient populations.

Endoscopic management of postcholecystectomy biliary leak: When and how? A nationwide study

BACKGROUND AND AIMS

ERCP is considered the first-line therapy for biliary duct leaks (BDLs). However, the optimal ERCP timing and endotherapy methods remain controversial. Our aim was to evaluate these factors as predictors of poor clinical outcomes after BDLs.

METHODS

Adults who underwent ERCP for BDLs after cholecystectomy were identified from the Nationwide Inpatient Sample from 2000 to 2014. ERCP was classified as emergent, urgent, and expectant if it was done within 1 day, after 2 to 3 days, or >3 days after BDLs, respectively. Endotherapy was classified into sphincterotomy, stent, or combination. Post-ERCP adverse events (AEs) were defined as requiring pressor infusion, endotracheal intubation, invasive monitoring, or hemodialysis. Early endotherapy failure was defined as the need for salvage surgical or radiology-percutaneous biliary intervention after ERCP.

RESULTS

A total of 1028 patients with a median age of 56 years were included. ERCP was done emergently (19%), urgently (30%), and expectantly (51%). Endotherapy procedures were sphincterotomy (24%), biliary stent (24%), and combination (52%). Post-ERCP AEs were 11%, 10%, and 9% for emergent, urgent, and expectant ERCP, respectively (P = .577). In-hospital mortality showed a U-shape trend of 5%, 0%, and 2% for emergent, urgent, and expectant ERCP, respectively (P < .001). Combination and stent monotherapy had lower failure rates of 3% and 4%, respectively as compared with sphincterotomy monotherapy with failure rate of 11% (P < .001). When multivariate analysis was used, both combination (odds ratio, .2; 95% confidence interval, .1-.5) and stent monotherapy (odds ratio, .4; 95% confidence interval, .2-.9) were less likely to fail as compared with sphincterotomy monotherapy. There were no statistically significant differences between combination therapy and stent monotherapy in the univariate and the multivariate analyses.

CONCLUSIONS

Although limited by retrospective design and the possibility of selection bias, this analysis suggests that the timing of ERCP is not a significant predictor of post-ERCP AEs after BDLs. Furthermore, combination or stent monotherapy had lower failure rates as compared with sphincterotomy monotherapy.

Venous carbon dioxide embolism during laparoscopic cholecystectomy a literature review

Laparoscopy has become the procedure of choice for routine gallbladder removal. A serious complication of this technique is the occurrence of gas emboli due to insufflation. It is associated with a high mortality rate of around 28%. The present systematic review intends to provide more insight into causes, symptoms and risk factors for this specific complication and to explore which measures should be taken to treat and prevent it. The Cochrane library and Pubmed were used as sources. Articles and their references were selected when they were related to the subject in sufficient detail. The course of this complication can vary from asymptomatic up to impairment of normal flow through the right ventricle (RV) or pulmonary artery, potentially leading to acute heart failure. The severity depends on the amount of gas, the rate of accumulation and the ability to remove the gas bubbles. It is difficult to estimate the true incidence of venous gas embolism during laparoscopic cholecystectomy as there are various diagnostic tools, each with different sensitivity. Precautions that need to be taken are: correct positioning of the needle, low insufflation pressure, low insufflation speed, screening for hypovolemia, Trendelenburg positioning, availability of intervention equipment at operation table, no placement of venous catheters during inspiration and catheter removing during expiration. Physicians need to be more aware of this harmful complication and the preventative measurements that need to be taken. As there are virtually no prospective data, future studies are needed to gain more knowledge on gas emboli during laparoscopic cholecystectomy.

THE CRITICAL VIEW OF SAFETY PREVENTS THE APPEARANCE OF BILIARY INJURIES? ANALYSIS OF A SURVEY

BACKGROUND

The risk of bile duct injury (BDI) during cholecystectomy remains a concern, despite efforts proposed for increasing safety. The Critical View of Safety (CVS) has been adopted promoting to reduce its risk.

AIM

To perform a survey to assess the awareness of the CVS, estimating the proportion of surgeons that correctly identified its elements and its relationship with BDI.

METHODS

An anonymous online survey was sent to 2096 surgeons inquiring on their common practices during cholecystectomy and their knowledge of the CVS.

RESULTS

A total of 446 surgeons responded the survey (21%). The percentage of surgeons that correctly identified the elements of CVS was 21.8% and 24.8% among surgeons claiming to know the CVS. The percentage of surgeons that reported BDI was higher among those that incorrectly identified the elements of the CVS (p=0.03). In the multivariate analysis, career length was the most significant factor related to BDI (p=0.002).

CONCLUSIONS

The percentage of surgeons that correctly identified the Critical View of Safety was low, even among those who claimed to know the CVS. The percentage of surgeons that reported BDI was higher among those that incorrectly identified the elements of the CVS.

Safety of single-incision robotic cholecystectomy for benign gallbladder disease: a systematic review

BACKGROUND

Multiport laparoscopic cholecystectomy (MLC) is the gold standard technique for cholecystectomy. In order to reduce postoperative pain and improve cosmetic results, the application of the single-incision laparoscopic cholecystectomy (SILC) technique was introduced, leading surgeons to face important challenges. Robotic technology has been proposed to overcome some of these limitations. The purpose of this review is to assess the safety of single-incision robotic cholecystectomy (SIRC) for benign disease.

METHODS

An Embase and Pubmed literature search was performed in February 2017. Randomized controlled trial and prospective observational studies were selected and assessed using PRISMA recommendations. Primary outcome was overall postoperative complication rate. Secondary outcomes were postoperative bile leak rate, total conversion rate, operative time, wound complication rate, postoperative hospital stay, and port site hernia rate. The outcomes were analyzed in Forest plots based on fixed and random effects model. Heterogeneity was assessed using the I² statistic.

RESULTS

A total of 13 studies provided data about 1010 patients who underwent to SIRC for benign disease of gallbladder. Overall postoperative complications rate was 11.6% but only 4/1010 (0.4%) patients required further surgery. A postoperative bile leak was reported in 3/950 patients (0.3%). Conversion occurred in 4.2% of patients. Mean operative time was 86.7 min including an average of 42 min should be added as for robotic console time. Wound complications occurred in 3.7% of patients. Median postoperative hospital stay was 1 day. Port site hernia at the latest follow-up available was reported in 5.2% of patients.

CONCLUSIONS

The use of the Da Vinci robot in single-port cholecystectomy seems to have similar results in terms of incidence and grade of complications compared to standard laparoscopy. In addition, it seems affected by the same limitations of single-port surgery, consisting of an increased operative time and incidence of port site hernia.

Migration of Surgical Clips into the Common Bile Duct after Laparoscopic Cholecystectomy

Laparoscopic cholecystectomy (LC) is currently the treatment of choice for symptomatic gallstones. Associated complications include bile duct injury, retained common bile duct (CBD) stones, and migration of surgical clips. Clip migration into the CBD can present with recurrent cholangitis over a period of time. Retained CBD stones can be another cause of recurrent cholangitis. A case of two surgical clips migrating into the common bile duct with few retained stones following LC is reported here. The patient had repeated episodes of fever, pain at epigastrium, jaundice, and pruritus 3 months after LC. Liver function tests revealed features of obstructive jaundice. Ultrasonography of the abdomen showed dilated CBD with few stones. In view of acute cholangitis, an urgent endoscopic retrograde cholangiopancreatography was done, which demonstrated few filling defects and 2 linear metallic densities in the CBD. A few retained stones along with 2 surgical clips were removed successfully from the CBD by endoscopic retrograde cholangiopancreatography after papillotomy using a Dormia basket. The patient improved dramatically following the procedure.

CT findings in acute peritonitis: a pattern-based approach

Many inflammatory and infectious entities may acutely affect the peritoneum causing a thickening of its layers. Unfortunately, several acute peritoneal diseases can have overlapping features, both clinically and at imaging. Therefore, the awareness of the clinical context, although useful, may be sometimes insufficient to identify the underlying cause. This article provides a specific computed tomography-based approach including morphologic characteristics of peritoneal thickening (e.g., smooth, irregular, or nodular) and ancillary findings to narrow the differential diagnosis of acute peritonitis.

Portobiliary fistula following laparoscopic cholecystectomy

The laparoscopic approach has replaced open surgery as the gold standard for cholecystectomy. This technique is, however, associated with a greater incidence of bile duct injuries (BDIs). We report a case of portobiliary fistula (PBF), a rare complication of BDI, occurring post laparoscopic cholecystectomy (LC). PBF has been reported after procedures such as endoscopic retrograde cholangiopancreatography and pathologies such as liver abscesses, but only once previously in the setting of LC. We discuss the management of this patient with apparent dual pathology, and summarise other aetiologies that may give rise to this condition.

Nationwide trends of hospital admissions for acute cholecystitis in the United States

Background and aims: Acute cholecystitis is a fairly common inpatient diagnosis among the gastrointestinal disorders. The aim of this study was to use a national database of US hospitals to evaluate the incidence and costs of hospital admissions associated with acute cholecystitis.

Method: We analyzed the National Inpatient Sample Database (NIS) for all patients in which acute cholecystitis (ICD-9 codes: 574.00, 574.01, 574.30, 574.31, 574.60, 574.61 or 575.0) was the principal discharge diagnosis from 1997 to 2012. The NIS is the largest all-payer inpatient database in the United States and contains data from approximately 8 million hospital stays each year. The statistical significance of the difference in the number of hospital discharges, lengths of stay and associated hospital costs over the study period was determined by using the Chi-square test for trends.

Results: In 1997, there were 149 661 hospital admissions with a principal discharge diagnosis of acute cholecystitis, which increased to 215 995 in 2012 ( P < 0.001). The mean length of stay for acute cholecystitis decreased by 17% between 1997 and 2012 (i.e. from 4.7 days to 3.9 days; (P < 0.05). During the same time period, however, mean hospital charges have increased by 195.4 % from US$14 608 per patient in 1997 to US$43 152 per patient in 2012 ( P < 0.001).

Conclusion: The number of inpatient discharges related to acute cholecystitis has increased significantly in the United States over the last 16 years, along with a great increase in the associated hospital charges. However, there has been a gradual decline in the mean length of stay. Inpatient costs associated with acute cholecystitis contribute significantly to the total healthcare bill. Further research on cost-effective evaluation and management of acute cholecystitis is required.

Improving Critical View of Safety in Laparoscopic Cholecystectomy by Teaching Interventions

BACKGROUND

Guidelines recommend obtaining a critical view of safety (CVS) during laparoscopic cholecystectomies to prevent serious bile duct injuries. We sought to evaluate the results of a teaching intervention for surgeons and residents about achieving CVS.

METHODS

The intervention consisted of a lecture followed by a handout on CVS along with a teaching video on how to perform a laparoscopic cholecystectomy and common pitfalls encountered. After 9 months, the whole intervention was repeated. We retrospectively collected demographic data, details about the procedure, and complications for 316 consecutive patients who underwent laparoscopic cholecystectomy and reviewed available videos of laparoscopic cholecystectomy for 229 of these patients. Videos before and after the teaching interventions were reviewed by 2 gastrointestinal surgeons regarding whether CVS was reached, and Kappa statistics were calculated to measure inter-rater agreement.

RESULTS

Most patients (average age 51 years) underwent laparoscopic cholecystectomy for symptomatic cholelithiasis (n = 171, 75%). CVS was reached in 69% of the preteaching intervention patients (n = 54), in 73% after the first teaching intervention (n = 75) and in 82% after the second intervention (n = 100) (not significant, overall p = 0.070). The complication rates were 24% (n = 13) before the intervention, 19% (n = 14) after the first teaching intervention, and 17% (n = 17) after the second intervention (not significant). In these groups, 1, 3, and 5 cases, correspondingly, with biliary injury were identified. All but 1 complication was related to a type A biliary injury.

CONCLUSION

After the teaching interventions, the complication rate and the rate of reaching CVS did not improve significantly. To improve surgeons' success in reaching CVS, more personal interventions may be more effective than the group intervention we used in this study. The next step may be to present surgeons and residents who have a low CVS rate directly with their personal results.

Complications After Laparoscopic Cholecystectomy: A Video Evaluation Study of Whether the Critical View of Safety was Reached

BACKGROUND

Achieving the critical view of safety (CVS) before transection of the cystic artery and duct is important to reduce biliary duct injury in laparoscopic cholecystectomy. To gain more insight into complications after laparoscopic cholecystectomy, we investigated whether the criteria for CVS were met during surgery by analyzing videos of operations performed at our institution.

METHODS

All consecutive patients who underwent a completed laparoscopic cholecystectomy between 2009 and 2011 were included. The videos of the operations of patients with complications were independently reviewed and rated by two investigators with a third consulted in the event of a disagreement. The reviewers answered consecutive questions about whether the CVS criteria were met. Patients who underwent an elective laparoscopic cholecystectomy and had no complications were used as a control group for comparison.

RESULTS

Of the 1108 consecutive patients who had undergone a laparoscopic cholecystectomy during the study period, 8.8 % developed complications (average age 51 years) and 1.7 % had bile duct injuries [six patients (0.6 %) had a major bile duct injury, type B, D, or E injury]. In the 65 surgical videos available for analysis, CVS was reached in 80 % of cases according to the operative notes. However, the reviewers found that CVS was reached in only 10.8 % of the cases. Only in 18.7 % of the cases the operative notes and video agreed about CVS being reached. CVS was not reached in any of the patients who had biliary injuries. In the control group, CVS was reached significantly more often in 72 %.

CONCLUSIONS

In our institutional series of laparoscopic cholecystectomies with postoperative complications, CVS was reached in only a few cases. Evaluating surgical videos of laparoscopic cholecystectomy cases are important and we recommend its use to improve surgical technique and decrease the number of biliary injuries.

"Laparoscopic Cholecystectomy: A Single Surgeon's Experience in some of the Teaching Hospitals of West Bengal"

Laparoscopic cholecystectomy has revolutionized the management of symptomatic gallstone disease since its introduction more than 20 years ago. It has gained widespread acceptance and is presently the gold standard for its management. This large study spanned over last 10 years and includes prospective data on 950 elective cases of laparoscopic cholecystectomy since 2002. All cases were operated personally by the author in different teaching hospitals of West Bengal. The following were looked into: profiles of the patients including major comorbidities requiring special precautions, the frequency of "difficult cholecystectomies," conversion rate, and operative and postoperative complications. The results showed that 75 % of the patients were females. The mean age of the female patients was 35 years (range15-75), while that of the male patients was 42 (range 18-68). Thirty-two patients had major comorbidities which required special precautions in the perioperative period. Twenty-six percent of the cases were categorized as "difficult," and 6 % of the cases had to be converted to open procedure. Major complications occurred in 11 patients of which five had to be converted. Fifty-five patients had port-site infection due to atypical mycobacteria species of which majority occurred in the last 1 year of the study. All of them responded to second-line antitubercular medications.

Common postoperative findings unique to laparoscopic surgery

The interpretation of images obtained in patients who have recently undergone abdominal or pelvic surgery is challenging, in part because procedures that were previously performed with open surgical techniques are increasingly being performed with minimally invasive (laparoscopic) techniques. Thus, it is important to be familiar with the normal approach used for laparoscopic surgeries. The authors describe the indications for various laparoscopic surgical procedures (eg, cholecystectomy, appendectomy, hernia repair) as well as normal postoperative findings. For example, port site hernias are more commonly encountered in patients with trocar sites greater than 10 mm and occur at classic entry sites (eg, the periumbilical region). Similarly, preperitoneal air can be encountered postoperatively, often secondary to trocar dislodgement during difficult entry or positioning. In addition, intraperitoneal placement of mesh during commonly performed ventral or incisional hernia repairs typically leads to postoperative seroma formation. Familiarity with normal findings after commonly performed laparoscopic surgical procedures in the abdomen and pelvis allows accurate diagnosis of common complications and avoidance of diagnostic pitfalls.

Iatrogenic biliary injuries: multidisciplinary management in a major tertiary referral center

Background. Iatrogenic biliary injuries are considered as the most serious complications during cholecystectomy. Better outcomes of such injuries have been shown in cases managed in a specialized center. Objective. To evaluate biliary injuries management in major referral hepatobiliary center. Patients & Methods. Four hundred seventy-two consecutive patients with postcholecystectomy biliary injuries were managed with multidisciplinary team (hepatobiliary surgeon, gastroenterologist, and radiologist) at major Hepatobiliary Center in Egypt over 10-year period using endoscopy in 232 patients, percutaneous techniques in 42 patients, and surgery in 198 patients. Results. Endoscopy was very successful initial treatment of 232 patients (49%) with mild/moderate biliary leakage (68%) and biliary stricture (47%) with increased success by addition of percutaneous (Rendezvous technique) in 18 patients (3.8%). However, surgery was needed in 198 patients (42%) for major duct transection, ligation, major leakage, and massive stricture. Surgery was urgent in 62 patients and elective in 136 patients. Hepaticojejunostomy was done in most of cases with transanastomotic stents. There was one mortality after surgery due to biliary sepsis and postoperative stricture in 3 cases (1.5%) treated with percutaneous dilation and stenting. Conclusion. Management of biliary injuries was much better with multidisciplinary care team with initial minimal invasive technique to major surgery in major complex injury encouraging early referral to highly specialized hepatobiliary center.

A 'critical view' on a classical pitfall in laparoscopic cholecystectomy!

INTRODUCTION

Laparoscopic cholecystectomy is the most common laparoscopic surgery performed by general surgeons. Although being a routine procedure, classical pitfalls shall be regarded, as misperception of intraoperative anatomy is one of the leading causes of bile duct injuries. The "critical view of safety" in laparoscopic cholecystectomy serves the unequivocal identification of the cystic duct before transection. The aim of this manuscript is to discuss classical pitfalls and bile duct injury avoiding strategies in laparoscopic cholecystectomy, by presenting an interesting case report.

PRESENTATION OF CASE

A 71-year-old patient, who previously suffered from a biliary pancreatitis underwent laparoscopic cholecystectomy after ERCP with stone extraction. The intraoperative situs showed a shrunken gallbladder. After placement of four trocars, the gall bladder was grasped in the usual way at the fundus and pulled in the right upper abdomen. Following the dissection of the triangle of Calot, a "critical view of safety" was established. As dissection continued, it however soon became clear that instead of the cystic duct, the common bile duct had been dissected. In order to create an overview, the gallbladder was thereafter mobilized fundus first and further preparation resumed carefully to expose the cystic duct and the common bile duct. Consecutively the operation could be completed in the usual way.

DISCUSSION

Despite permanent increase in learning curves and new approaches in laparoscopic techniques, bile duct injuries still remain twice as frequent as in the conventional open approach. In the case presented, transection of the common bile duct was prevented through critical examination of the present anatomy. The "critical view of safety" certainly offers not a full protection to avoid biliary lesions, but may lead to a significant risk minimization when consistently implemented.

CONCLUSION

A sufficient mobilization of the gallbladder from its bed is essential in performing a critical view in laparoscopic cholecystectomy.

Non-surgical treatment of post-surgical bile duct injury: Clinical implications and outcomes

AIM: To investigate the prognostic factors determining the success rate of non-surgical treatment in the management of post-operative bile duct injuries (BDIs).

METHODS: The study patients were enrolled from the pancreatobiliary units of a tertiary teaching hospital for the treatment of BDIs after hepatobiliary tract surgeries, excluding operations for liver transplantation and malignancies, from January 1999 to August 2010. A total of 5167 patients underwent operations, and 77 patients had BDIs following surgery. The primary end point was the treatment success rate according to different types of BDIs sustained using endoscopic or percutaneous hepatic approaches. The type of BDI was defined using one of the following diagnostic tools: endoscopic retrograde cholangiography, percutaneous transhepatic cholangiography, computed tomography scan, and magnetic resonance cholangiography. Patients with a final diagnosis of BDI underwent endoscopic and/or percutaneous interventions for the treatment of bile leak and/or stricture if clinically indicated. Patient consent was obtained, and study approval was granted by the Institutional Review Board in accordance with the legal regulations of the Human Clinical Research Center at the Seoul National University Hospital in Seoul, South Korea.

RESULTS: A total of 77 patients were enrolled in the study. They were divided into three groups according to type of BDI. Among them, 55 patients (71%) underwent cholecystectomy. Thirty-six patients (47%) had bile leak only (type 1), 31 patients had biliary stricture only (type 2), and 10 patients had both bile leak and biliary stricture (type 3). Their initial treatment modalities were non-surgical. The success rate of non-surgical treatment in each group was as follows: BDI type 1: 94%; type 2: 71%; and type 3: 30%. Clinical parameters such as demographic factors, primary disease, operation method, type of operation, non-surgical treatment modalities, endoscopic procedure steps, type of BDI, time to diagnosis and treatment duration were evaluated to evaluate the prognostic factors affecting the success rate. The type of BDI was a statistically significant prognostic factor in determining the success rate of non-surgical treatment. In addition, a shorter time to diagnosis of BDI after the operation correlated significantly with higher success rates in the treatment of type 1 BDIs.

CONCLUSION: Endoscopic or percutaneous hepatic approaches can be used as an initial treatment in type 1 and 2 BDIs. However, surgical intervention is a treatment of choice in type 3 BDI.

Senior residents as teaching assistants during laparoscopic cholecystectomy in the 80-hour workweek era: effect on biliary injury and overall complication rates

PURPOSE

The resident as teaching assistant (TA) in the operating room is an important role in the maturation of surgical trainees. One concern in the current 80-hour workweek era is that current senior residents (SRs) are unprepared to serve as TAs, potentially leading to higher complication rates and a significant increase in the length of operations. The aim of this study was to analyze whether SRs serving as TAs during laparoscopic cholecystectomy (LC) resulted in an adverse effect on complication rates in the 80-hour workweek era.

METHODS

A retrospective review was conducted of 1668 LC performed at 2 affiliated general surgery teaching hospitals from 2003 through 2007. Teaching hospital A was a public teaching hospital where junior residents (JR) performed the LC with a scrubbed SR as TA under faculty supervision. Teaching hospital B was a community-based affiliate hospital where the JR performed LC with only scrubbed faculty supervision. Operative case duration, JR level, patient gender/age, operative indication, final pathology, and complication data were gathered and univariate and multivariate analyses were performed.

RESULTS

Despite a higher rate of acute cholecystitis in the TA hospital, LC-associated complications occurred at similar rates with and without SR as TA. The rate of biliary injury was also the same in both hospitals. On multivariable analysis, only male gender was associated with complications (odds ratio = 1.7; p = 0.004).

CONCLUSIONS

In the 80-hour resident workweek era, SRs acting as TAs during LC is not associated with increased total complications or an increased rate of biliary injury.

Costs and clinical outcomes of conventional single port and micro-laparoscopic cholecystectomy

Cost for single-port cholecystectomy in the outpatient setting was found to be greater than the cost for micro-laparoscopic or conventional laparoscopic cholecystectomy.

Background and Objective:

This study compares hospital costs and clinical outcomes for conventional laparoscopic, single-port, and mini-laparoscopic cholecystectomy from US hospitals.

Methods:

Eligible patients were aged ≥18 years and undergoing laparoscopic cholecystectomy with records in the Premier Hospital Database from 2009 through the second quarter of 2010. Patients were categorized into 3 groups—conventional laparoscopic, single port, or mini-laparoscopic—based on the International Classification of Diseases, Ninth Revision and Current Procedural Terminology codes and hospital charge descriptions for surgical tools used. A procedure was considered mini-laparoscopic if no single-port surgery products were identified in the charge master descriptions and the patient record showed that at least 1 product measuring <5 mm was used, not more than 1 product measuring >5 mm was used, and the measurements of the other products identified equaled 5 mm. Summary statistics were generated for all 3 groups. Multivariable analyses were performed on hospital costs and clinical outcomes. Models were adjusted for demographics, patient severity, comorbid conditions, and hospital characteristics.

Results:

In the outpatient setting, for single-port surgery, hospital costs were approximately $834 more than those for mini-laparoscopic surgery and $964 more than those for conventional laparoscopic surgery (P < .0001). Adverse events were significantly higher (P < .0001) for single-port surgery compared with mini-laparoscopic surgery (95% confidence interval for odds ratio, 1.38–2.68) and single-port surgery versus conventional surgery (95% confidence interval for odds ratio, 1.37–2.35). Mini-laparoscopic surgery hospital costs were significantly (P < .0001) lower than the costs for conventional surgery by $211, and there were no significant differences in adverse events.

Conclusions:

These findings should inform practice patterns, treatment guidelines, and payor policy in managing cholecystectomy patients.

Optimum cystic duct closure: a comparative study using metallic clips, ENSEAL, and ENDOLOOP in swine

BACKGROUND

Metal clips are commonly used to secure the cystic duct during cholecystectomy, although use of an ENDOLOOP (Ethicon Endo-Surgery, Blue Ash, OH) is often touted as a more secure closure when postoperative endoscopic retrograde cholangiopancreatography (ERCP) is anticipated. The objective of this study was to test the strength of 3 different cystic duct closure methods in a model simulating postoperative biliary insufflation.

METHODS

The extrahepatic biliary system, including common bile duct, gallbladder, and cystic duct, was harvested en bloc from 22 swine postmortem. A cholecystectomy was performed and the cystic duct was secured using 1 of 3 randomly assigned methods: metallic clips (Ethicon Endo-Surgery), an ENDOLOOP (Ethicon Endo-Surgery), or an ENSEAL tissue sealing device (Ethicon Endo-Surgery). The common bile duct was cannulated with a pressure-monitoring system and insufflated with air. The burst pressures, location of rupture, and size of the common bile duct and cystic duct were recorded and compared.

RESULTS

There were 7 pigs each in the ENDOLOOP and ENSEAL groups and 8 in the metallic clip group, with no statistical significance between cystic and common bile duct size. Mean burst pressure was 432 mm Hg for metallic clips, 371 mm Hg for the ENDOLOOP, and 238 mm Hg for the ENSEAL device (P = .02). Post hoc analysis revealed clips to be statistically superior when compared with the ENSEAL (P= .01). There was no statistical difference between the ENDOLOOP and metal clips or between the ENDOLOOP and the ENSEAL.

CONCLUSIONS

All 3 closure methods successfully secured the cystic duct, with mean burst pressures exceeding 195 mm Hg. Metallic clips demonstrated the highest burst pressures and no cystic duct stump leaks. This study challenges the traditional dogma of additionally securing the cystic duct with an ENDOLOOP when postoperative biliary instrumentation is expected and also suggests that an adequately secure closure may be obtained with thermal sealing devices.

Safety and efficacy of therapeutic endoscopic interventions in the management of biliary leak

Endoscopic procedures which reduce the trans-papillary pressure gradient are the treatment of choice for management of biliary leaks. We analyzed the data of 102 patients with biliary leak managed by various endoscopic procedures like endoscopic sphincterotomy (ES), ES with stenting, stenting alone or nasobiliary drainage (NBD) alone; 90 of these patients had developed a leak after cholecystectomy. In the post-cholecystectomy group, cannulation was successful in 79 patients; therapeutic intervention was not possible in 14 of them due to complete transection of common bile duct in 6, and leak proximal to ligature in 8. In the remaining 65 patients, ES with stenting was done in 52, stent alone in 6, ES alone in 5 and NBD alone in 2. All 12 patients in other etiology group were treated with ES plus stenting. The leak closed in a mean of 3 (1-10) days in all patients. Stents were removed after 6-8 weeks. Endoscopic procedures are effective in managing biliary leaks.

Routine testing of liver function before and after elective laparoscopic cholecystectomy: is it necessary?

This study suggests that mild to moderate elevation in preoperative liver function tests may not be associated with deleterious effects, and in the absence of clinical indications, routine preoperative or postoperative liver function testing may not be necessary.

Background and Objectives:

Liver function tests (LFTs) include alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma-glutamyl transpeptidase (GGT), alkaline phosphatase (ALP), and bilirubin. The role of routine testing before and after laparoscopic cholecystectomy was evaluated in this study.

Patients and Methods:

A total of 355 patients were retrospectively analyzed by examining the LFTs the day before, the day after, and 3 weeks after the surgery. The Wilcoxon signed-rank test and Student t test were performed to determine statistical significance.

Results:

Alterations in the serum AST, ALT, and GGT were seen on the first postoperative day. Minor changes were seen in bilirubin and ALP. An overall disturbance in the LFTs was seen in more than two-thirds of the cases. Repeat LFTs performed after 3 weeks on follow-up were found to be within normal limits.

Conclusion:

Mild-to-moderate elevation in preoperative LFTs may not be associated with any deleterious effect, and, in the absence of clinical indications, routine preoperative or postoperative liver function testing is unnecessary.