Clinical Research Directory

Prospective Registry Of Therapeutic EndoscopiC ulTrasound

This registry aims to analyze long-term outcomes of therapeutic EUS (T-EUS) procedures, as well as to describe clinical and technical variables potentially predicting clinical success or adverse events, for a better selection of ideal candidates. The study also includes standard alternatives to T-EUS procedures for outcomes comparison.

EUS-GBD vs Antibiotics for Patients at High Risk for Cholecystectomy

Objectives Acute cholecystitis commonly occurs in elderly patients who are at high-risk for surgery. Whether upfront Endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) is advantageous over antibiotics first for mild acute cholecystitis is uncertain. Hypothesis to be tested The aim is to compare EUS-GBD versus standard protocol (antibiotics first) as a definitive treatment, in very high-risk patients suffering from mild to moderate acute cholecystitis. We hypothesize that EUS-GBD can reduce the 1-year risk of recurrent acute cholecystitis. Design and subjects This is an international randomised controlled study including consecutive patients suffering from acute cholecystitis that are very high-risk for cholecystectomy. The patients would be randomized to receive EUS-GBD or antibiotics first. Interventions: EUS-GBD versus antibiotics Main outcome measures: The primary outcome is the rate of recurrent acute cholecystitis in 1 year. Other outcomes include technical and clinical success, post-procedural pain scores, analgesic requirements, adverse events, re-admissions, re-interventions, quality of life and cost analysis. Data analysis All outcomes would be analysed according to the intention-to-treat principle. Kaplan-Meier method with the log-rank test will be used to compare differences in recurrent acute cholecystitis in 1 year. A health economic analysis will also be performed. Assuming a 17.1% difference in recurrent acute cholecystitis rates, a 2-sided P value of 0.05, a power of 80%, and a 10% dropout rate, 110 patients is required. Expected results The findings of this study can help establish the role of EUS-GBD in management of high-risk patients suffering from acute cholecystitis over antibiotics alone and Percutaneous transhepatic gallbladder drainage.

Acute Cholecystitis Biliary Complications - ICG

Acute cholecystitis is a common indication for emergency laparoscopic cholecystectomy. Inflammatory changes and distorted anatomy may increase the risk of biliary complications, including bile duct injury and bile leak, which are associated with significant morbidity, reinterventions, and prolonged hospitalization. Indocyanine green (ICG) fluorescence cholangiography allows real-time visualization of the extrahepatic biliary anatomy using near-infrared imaging and has shown to improve anatomical identification during elective cholecystectomy. However, its clinical impact in the emergency setting of acute cholecystitis has not been adequately evaluated in randomized multicenter trials. The objective of this study is to determine whether the use of ICG fluorescence cholangiography during emergency laparoscopic cholecystectomy reduces the incidence of clinically relevant biliary complications compared with standard surgery without ICG. This is a pragmatic, multicenter, open-label randomized controlled trial including 296 adult patients with acute cholecystitis undergoing urgent laparoscopic cholecystectomy. Participants will be randomized 1:1 to surgery with or without ICG fluorescence guidance. The primary outcome is the incidence of clinically relevant biliary complications, including bile duct injury or bile leak, within 90 days after surgery.

Early Versus Delayed Cholecystectomy After Percutaneous Cholecystostomy in Moderate and Severe Cholecystitis (ESCAPE)

Abstract: Acute cholecystitis (AC) is typically managed according to the 2018 Tokyo Guidelines, with treatment strategies determined by the severity of the disease, patient comorbidities, and hospital capabilities. In cases of moderate AC, treatment options include antibiotics with delayed laparoscopic cholecystectomy (LC), antibiotics with early LC, or antibiotics with percutaneous cholecystostomy (PCC) followed by delayed LC. However, the Toyo Guideline 2018 suggested that there is a lack of consensus regarding the optimal timing for surgery following PCC due to insufficient scientific evidence. In practice, delayed LC is often performed approximately 6 weeks after PCC insertion. While PCC can serve as a treatment option before definite surgery, complications such as tube dislodgment, obstruction, and failure to ambulate are common, leading to further hospital admissions and increased comorbidities. The ESCAPE trial was conducted to evaluate the optimal timing for LC following PCC in moderate and severe forms of acute cholecystitis, with the goal of improving treatment standards and reducing complications associated with PCC retention. We hypothesize that early LC after PCC insertion will be a feasible and effective alternative. Methods: This prospective, randomized controlled trial enrolled patients diagnosed with moderate to severe acute cholecystitis who underwent PCC. Clinical manifestations and laboratory parameters were monitored for 72 hours following PCC insertion. Patients demonstrating clinical or laboratory improvement were subsequently randomized into two groups: early LC and delayed LC. * Early LC group: Laparoscopic cholecystectomy was performed during the same hospitalization. * Delayed LC group: Laparoscopic cholecystectomy was performed more than 6 weeks after PCC insertion. The primary endpoint/outcome is comprehensive complication index (CCI) from PCC and LC. Secondary endpoints include Nasaar Difficulty Scoring, length of hospital stay, rate of subtotal cholecystectomy, rate of conversion to open cholecystectomy and incidence of bile duct injury. Results and Discussion: The results of this study will provide valuable insights into the timing of LC following PCC and may influence future treatment protocols for moderate and severe acute cholecystitis. By assessing the feasibility and safety of early LC after PCC insertion, the ESCAPE trial aims to reduce the burden of PCC-related complications and optimize patient outcomes.

AE05ML Device for ML Hem-o-lok Polymer Clip Delivery in Laparoscopic Surgical Procedures Observational Registery Study

This clinical registry study aims to evaluate the safety and effectiveness of the AE05ML device for ligating vessels and tissue structures during laparoscopic surgery using Hem-o-lok® Medium Large (ML) polymer clips. The primary objective is to assess the device's safety and performance, with secondary objectives focusing on device performance characteristics and operator feedback.

Conservative Versus Proactive Management of Acute Cholecystitis After EUS-guided Transmural Gallbladder Drainage: FUGITIVE Trial (FUGITIVE)

Patients with gallbladder inflammation (acute cholecystitis) who cannot undergo surgery due to their fragility and surgical risk require a gallbladder drainage. It has been confirmed in previous studies that the gallbladder drainage from the digestive tract is a better alternative, because it has fewer complications than external (percutaneous) gallbladder drainage. However, there are no known studies that demonstrate whether it is better to maintain this drainage indefinitely, or to carry out periodic revisions of the drainage to progressively remove the stones lodged in the gallbladder and remove the drainage once this has been achieved. In this study we aim to compare the clinical evolution of patients who undergo this gallbladder drainage, dividing them into two groups: * One group of patients in whom we maintain a metallic prosthesis or stent, which communicates the gallbladder with the stomach, indefinitely in order to always guarantee a drainage of the bile towards the digestive tract, and thus avoid new episodes of cholecystitis. * Another group of patients who, one month after having undergone drainage, undergo a new procedure to remove the gallbladder lithiasis, until it is empty and without inflammation and we can remove the metal stent, leaving only a very thin plastic catheter to maintain the fistula and thus the bile continues to flow into the digestive tract. More than one procedure may be required to completely clear the gallbladder. Knowledge of whether one strategy or the other presents fewer complications in the short, medium and long term is essential to be able to offer the best alternative to our patients. The aim of the study is to compare the clinical outcome of these patients who have a definitive drain inserted with those who undergo several procedures to clear the gallbladder until the drain is removed. The rate of complications, the need for re-interventions and hospital admissions, new episodes of acute cholecystitis, quality of life and mortality of both groups over a period of one year are compared.

One-year Outcomes by Index Treatment in Elderly Patients With Acute Cholecystitis

Background: The GOLDENEYE study is an international, multicenter, prospective observational investigation designed to compare the outcomes of various management strategies for acute cholecystitis in patients aged 70 years and older. This research is driven by the increasing prevalence of gallstones and biliary tract diseases in the elderly, alongside a recognition that the burden of comorbidity in this population may necessitate tailored treatment approaches to optimize outcomes. Patients and Methods: The primary aims of the study are to evaluate the efficacy of different treatments -supportive care, percutaneous gallbladder drainage, early or delayed cholecystectomy, and EUS-guided gallbladder drainage- on patient-centric outcomes, including one-year additional treatment modalities, hospital readmissions, outpatient encounters, quality of life, and survival rates. The study adopts a robust design incorporating propensity score matching analysis to account for the non-randomized allocation of treatment modalities, thereby minimizing selection bias and enhancing the comparability of treatment groups. Inclusion criteria are centered on patients ≥70 years diagnosed with acute cholecystitis, as per the Tokyo guidelines, while key exclusion criteria include prior episodes of cholecystitis or pancreatitis, terminal illness, and concurrent diagnosis of acute pancreatitis, cholangitis, bile duct disease, or digestive malignancy. Data collection will leverage the REDCap platform for systematic and secure data management, facilitating real-time data entry and monitoring across participating centers. Discussion: This comprehensive approach ensures the integrity and reliability of data collected on demographics, gender, clinical outcomes, and quality of life measures. Through its innovative design and methodology, the GOLDENEYE study aims to generate evidence-based insights that will significantly influence the management of acute cholecystitis in the elderly, ultimately improving patient outcomes and healthcare practices in this growing demographic population.

Prevention of Acute Cholecystitis With ETGBD

The goal of this clinical trial is to learn about Efficacy of the ETGBD parallel insertion with fully covered self-expandable metal stent for preventing acute cholecystitis in patients with low cystic duct insertion. In this study, we hypothesized that endoscopic transpapillary gallbladder drainage (ETGBD) with parallel insertion of a fully covered self-expanding metal stent(FCSEMS) through an endoscopic biliary drainage tunnel is superior in preventing complications such as cholecystitis when the gallbladder ducts confluence within the distal third of the common bile duct. And we aimed to confirm its efficacy by comparing the frequency, severity, and rate of invasive additional procedures due to cholecystitis complications to provide evidence of clinical utility.

Gallbladder Stenting in FC-SEMS

The goal of this randomized controlled trial is to determine whether primary prophylaxis with transpapillary gallbladder drainage prevents acute cholecystitis after fully-covered self-expandable metal stents placement during endoscopic retrograde cholangiopancreatography for malignant distal biliary obstruction in patients at higher risk of post-endoscopic retrograde cholangiopancreatography acute cholecystitis. The main question it aims to answer is: Does prophylactic transpapillary gallbladder drainage reduce the rate of post-endoscopic retrograde cholangiopancreatography acute cholecystitis in high-risk patients? Researchers will compare patients who undergo transpapillary gallbladder drainage to patients without transpapillary gallbladder drainage to see if transpapillary gallbladder drainage reduces the rate of acute cholecystitis. Participants will: 1. receive or not transpapillary gallbladder drainage before fully-covered self-expandable metal stents placement 2. will be followed up at one, three, and six months to ascertain the onset of acute cholecystitis

the Outcomes of Laparoscopic Cholecystectomy for Acute Cholecystitis Within and Beyond the First 72 Hours, Does it Differ?!

Compare outcomes of patients undergoing early laparoscopic cholecystectomy within and after72 hours of symptoms.

External Validation os the ACME Scoring System

Acute calculous cholecystitis (ACC) is the second most frequent surgical condition in emergency departments. The recommended treatment is surgical treatment (ST) and the accepted mortality is \<1%, but in severe and/or fragile patients is higher. Despite the Tokyo Guidelines, there no consensus on who is the unfit patient for ST. A recent study has identified 4 risk factors that predicts the mortality in a 92% of patients (ACME) and could help to develop new guidelines in ACC. The aim of this study is to perfom an external validation of the new simplified scoring system for mortality in ACC.

Influence of Gut Microbiome in Gallstone Disease

The goal of this prospective observational study is to explore the role of the gut microbiome in patients with gallstone disease. The main question\[s\] it aims to answer are: * if there is a relationship between the gut microbiome and the development of complications associated with gallstone disease (such as pancreatitis and acute cholecystitis) * if there are changes in the gut microbiome following cholecystectomy and the relationship with patient outcomes. Participants will be asked to provide stool samples at fixed time points (recruitment, pre- and post-cholecystectomy if applicable and at 6 months and 3 years. They will also be asked to provide stool samples if they represent to hospital with complications associated with their gallstone disease.

Web-based International Register of Emergency Surgery and Trauma

The WIRES-T project (Web-based International Registry of Emergency General Surgery and Trauma) has been set up to allow to all the EGS (Emergency General Surgery) and Trauma surgeons to register their activity and to obtain a worldwide register of traumatic and non traumatic surgical emergencies. This will give the opportunity to evaluate results on a macro-data basis and to give index allowing stratifying, evaluating and improving the outcomes.