Endoscopic retrograde cholangiopancreatography-related adverse events in Korea: A nationwide assessment.

BACKGROUND: Although endoscopic retrograde cholangiopancreatography (ERCP) is a pivotal procedure for the diagnosis and treatment of a variety of pancreatobiliary diseases, it has been known that the risk of procedure-related adverse events (AEs) is significant. OBJECTIVE: We conducted this nationwide cohort study since there have been few reports on the real-world data regarding ERCP-related AEs. METHODS: Patients who underwent ERCP were identified between 2012 and 2015 using Health Insurance Review and Assessment database generated by the Korea government. Incidence, annual trends, demographics, characteristics according to the types of procedures, and the risk factors of AEs were assessed. RESULTS: A total of 114,757 patients with male gender of 54.2% and the mean age of 65.0 ± 15.2 years were included. The most common indication was choledocholithiasis (49.4%) and the second malignant biliary obstruction (22.8%). Biliary drainage (33.9%) was the most commonly performed procedure, followed by endoscopic sphincterotomy (27.4%), and stone removal (22.0%). The overall incidence of ERCP-related AEs was 4.7% consisting of post-ERCP pancreatitis (PEP; 4.6%), perforation (0.06%), and hemorrhage (0.02%), which gradually increased from 2012 to 2015. According to the type of procedures, ERCP-related AEs developed the most commonly after pancreatic stent insertion (11.4%), followed by diagnostic ERCP (5.9%) and endoscopic sphincterotomy (5.7%). Younger age and diagnostic ERCP turned out to be independent risk factors of PEP. CONCLUSIONS: ERCP-related AEs developed the most commonly after pancreatic stent insertion, diagnostic ERCP and endoscopic sphincterotomy. Special caution should be used for young patients receiving diagnostic ERCP due to increased risk of PEP.

Intervention versus surveillance in patients with common bile duct stones detected by intraoperative cholangiography: a population-based registry study.

BACKGROUND: Each year 13 000 patients undergo cholecystectomy in Sweden, and routine intraoperative cholangiography (IOC) is recommended to minimize bile duct injuries. The risk of requiring endoscopic retrograde cholangiopancreatography (ERCP) following cholecystectomy for common bile duct (CBD) stones where IOC is omitted and in patients with CBD stones left in situ is not well known. METHODS: Data were retrieved from the population-based Swedish Registry of Gallstone Surgery and ERCP between 1 January 2009 and 10 December 2019. Primary outcome was risk for postoperative ERCP for retained CBD stones. RESULTS: A total of 134 419 patients that underwent cholecystectomy were included and 2691 (2.0 per cent) subsequently underwent ERCP for retained CBD stones. When adjusting for emergency or planned cholecystectomy, preoperative symptoms suggestive of CBD stones, sex and age, there was an increased risk for ERCP when IOC was not performed (hazard ratio (HR) 1.4, 95 per cent c.i. 1.3 to 1.6). The adjusted risk for ERCP was also increased if CBD stones identified by IOC were managed with surveillance (HR 5.5, 95 per cent c.i. 4.8 to 6.4). Even for asymptomatic small stones (less than 4 mm), the adjusted risk for ERCP was increased in the surveillance group compared with the intervention group (HR 3.5, 95 per cent c.i. 2.4 to 5.1). CONCLUSION: IOC plus an intervention to remove CBD stones identified during cholecystectomy was associated with reduced risk for retained stones and unplanned ERCP, even for the smallest asymptomatic CBD stones.

This population-based registry study shows that when common bile duct (CBD) stones are identified by intraoperative cholangiography (IOC) and not removed, there is a risk for retained stones requiring endoscopic retrograde cholangiopancreatography. For asymptomatic stones less than 4 mm diameter, 10.7 per cent in the surveillance group had a retained stone following surgery. These findings imply that even the smallest CBD stones identified by IOC should be removed.

Morbid obesity but not obesity is associated with increased mortality in patients undergoing endoscopic retrograde cholangiopancreatography: A national cohort study.

BACKGROUND: The relationship between body weight and outcomes of endoscopic retrograde cholangiopancreatography (ERCP) is unclear. OBJECTIVES: This study aimed to investigate the impact of obesity and morbid obesity on mortality and ERCP-related complications in patients who underwent ERCP. METHODS: We conducted a US population-based retrospective cohort study using the Nationwide Readmissions Databases (2013-2014). A total of 159,264 eligible patients who underwent ERCP were identified, of which 137,158 (86.12%) were normal weight, 12,522 (7.86%) were obese, and 9584 (6.02%) were morbidly obese. The primary outcome was in-hospital mortality. The secondary outcomes were the length of stay, total cost, and ERCP-related complications. Multivariate analysis and propensity score (PS) matching analysis were performed. The analysis was repeated in a restricted cohort to eliminate confounders. RESULTS: Patients with morbid obesity, as compared to normal-weight patients, were associated with a significantly higher in-hospital mortality (hazard ratio [HR]: 5.54; 95% confidence interval [CI]: 1.23-25.04). Obese patients were not associated with significantly different mortality comparing to normal weight (HR: 1.00; 95% CI: 0.14-7.12). Patients with morbid obesity were also found to have an increased length of hospital stay and total cost. The rate of ERCP-related complications was comparable among the three groups except for a higher cholecystitis rate after ERCP in obese patients. CONCLUSIONS: Morbid obesity but not obesity was associated with increased mortality, length of stay, and total cost in patients undergoing ERCP.

Evaluation of the conversion rate as it relates to preoperative risk factors and surgeon experience: a retrospective study of 4013 patients undergoing elective laparoscopic cholecystectomy.

BACKGROUND: Our aim is to determine the relationships among patient demographics, patient history, surgical experience, and conversion rate (CR) during elective laparoscopic cholecystectomies (LCs). METHODS: We analyzed data from patients who underwent LC surgery between 2005 and 2014 based on patient charts and electronic documentation. CR (%) was evaluated in 4013 patients who underwent elective LC surgery. The relationships between certain predictive factors (patient demographics, endoscopic retrograde cholangiopancreatography (ERCP), acute cholecystitis (AC), abdominal surgery in the patient history, as well as surgical experience) and CR were examined by univariate analysis and logistic regression. RESULTS: In our sample (N = 4013), the CR was 4.2%. The CR was twice as frequent among males than among females (6.8 vs. 3.2%, p < 0.001), and the chance of conversion increased from 3.4 to 5.9% in patients older than 65 years. The detected CR was 8.8% in a group of patients who underwent previous ERCP (8.8 vs. 3.5%, p < 0.001). From the ERCP indications, most often, conversion was performed because of severe biliary tract obstruction (CR: 9.3%). LC had to be converted to open surgery after upper and lower abdominal surgeries in 18.8 and 4.8% cases, respectively. Both AC and ERCP in the patient history raised the CR (12.3%, p < 0.001 and 8.8%, p < 0.001). More surgical experience and high surgery volume were not associated with a lower CR prevalence. CONCLUSIONS: Patient demographics (male gender and age > 65 years), previous ERCP, and upper abdominal surgery or history of AC affected the likelihood of conversion. More surgical experience and high surgery volume were not associated with a lower CR prevalence.

Nationwide survey of pediatric gastrointestinal endoscopy in Japan.

BACKGROUND AND AIM: The implementation rates of pediatric gastrointestinal endoscopy are increasing with advancements in the devices used and pediatricians' skills. As part of the Japan Pediatric Endoscopy Study Group, we aimed to investigate the rates of pediatric gastrointestinal endoscopy use and the associated adverse events through a nationwide survey. METHODS: A questionnaire was sent to 630 institutions in Japan. The numbers of pediatric gastrointestinal endoscopy cases and adverse events occurring during endoscopy, from April 2011 to March 2016, were investigated. RESULTS: Responses were obtained from 445 facilities. The total number of pediatric gastrointestinal endoscopies was 37 447 and that of endoscopic examinations was 32 219 (86.0%), with esophagogastroduodenoscopy accounting for 18 484 cases; ileal colonoscopy, 11 936; endoscopic retrograde cholangiopancreatography, 389; wireless capsule endoscopy, 897; and balloon-assisted enteroscopy, 513. The number of endoscopic treatments was 5228, followed by balloon dilatation (1703), foreign body removal (989), and polypectomy (822); 201 adverse events (0.54%) occurred, 79 of which presented during endoscopic examination (0.25%). Eight serious perforations were noted in 0.0054% and 0.025% of those undergoing esophagogastroduodenoscopy and colonoscopy, respectively. Overall, 122 adverse events (2.33%) occurred in association with endoscopic treatment. One case of cardiopulmonary arrest occurred because of accidental extubation. However, no deaths occurred. CONCLUSION: Endoscopic examinations had a slightly higher adverse event rate, because of an increase in endoscopic retrograde cholangiopancreatography and small intestine enteroscopy, than that reported in previous studies, but the adverse event rate of endoscopic treatment did not increase.

The Impact of Laparoscopic Cholecystectomy on 30-Day Readmission Rate for Acute Cholangitis Patients: A Single-Center Study.

OBJECTIVES: Laparoscopic cholecystectomy (LC) following acute gallstone cholangitis reduces the recurrence of biliary symptoms; however, the timing of LC has not been determined yet. The aim of our study was to evaluate the impact of performing LC during admission on the 30-day readmission rate. METHODS: We conducted a retrospective cohort study of acute gallstone cholangitis patients who underwent endoscopic clearance (EC) of the bile duct through endoscopic retrograde cholangiopancreatography between April 2013 and May 2018. Patients were classified into two groups: EC only group and EC followed by LC during admission (EC + LC) group. The primary outcome was the 30-day readmission rate. RESULTS: A total of 95 patients with acute cholangitis were included in the analysis. Of these patients, 35 patients (36.8%) underwent LC during admission. The 30-day readmission rate was significantly lower in the EC + LC group compared to the EC group (2.9% vs. 26.7%, P 0.003). In a multivariate regression analysis, patients who underwent LC during admission had 90% lower odds of readmission within 30 days compared to patients who did not (OR 0.1, 95% CI (0.01-0.9), P 0.04). CONCLUSIONS: Performing laparoscopic cholecystectomy during admission for acute gallstone cholangitis patients following endoscopic clearance of the bile duct significantly reduced the 30-day readmission rate without affecting the length of stay.

Risk factors for 30-day readmission and indication for ERCP following laparoscopic cholecystectomy: a retrospective NSQIP cohort study.

BACKGROUND: Laparoscopic cholecystectomy (LC) is one of the safest, most commonly performed surgical procedures, but postoperative complications including bile leak, retained stone, cholangitis, and gallstone pancreatitis following LC occur in up to 2.6% of cases and may require readmission with possible endoscopic retrograde cholangiopancreatography (ERCP) intervention. There is a paucity of literature on factors predictive of need for ERCP following LC. The goal of this study is to describe the prevalence and risk factors for readmission with indication for ERCP. METHODS: We queried the ACS/NSQIP 2012-2017 Participant User Files for patients who underwent LC. Patient demographics, comorbidities, operative characteristics, and postoperative outcomes were evaluated. Multivariate logistic regression was used to identify risk factors for readmission with indication for ERCP intervention. RESULTS: Of 275,570 patients, 11,010 (4.00%) were readmitted within the 30-day postoperative period. Among these, 930 (8.44%) were admitted with indication for ERCP intervention. On multivariate regression, readmissions were more likely in older patients, inpatients, and patients with baseline comorbidities, acute preoperative morbidity, and those discharged to care facilities. The use of intraoperative cholangiogram was associated with lower odds of readmission. Less than 10% of readmitted patients had an indication for ERCP. Those who were readmitted with an indication for ERCP were more likely to have undergone emergency surgery, experienced longer operative times, and had elevated preoperative LFTs or gallstone pancreatitis prior to surgery. The risk of 30-day mortality was significantly higher among patients who experienced any complications after their surgery (OR 13.03, 95% CI 10.57-16.07, p < 0.001). CONCLUSIONS: Older patients, patients with greater preoperative morbidity, and those discharged to care facilities were more likely to be readmitted for any reason following laparoscopic cholecystectomy, whereas patients with evidence of complicated gallstone disease were more likely to be readmitted with an indication for ERCP, even when controlling for the use of intraoperative cholangiogram. Initiatives aimed at reducing readmission with indication for ERCP should focus on these patient subgroups.

Undernutrition and Obesity Are Associated with Adverse Clinical Outcomes in Hospitalized Children and Adolescents with Acute Pancreatitis.

Background: Adult studies demonstrated that extremes of nutritional status adversely impact clinical outcomes in acute pancreatitis (AP). With rising prevalence of undernutrition/obesity in children, we analyzed the effect of nutritional status on the clinical outcomes in children and adolescents with acute pancreatitis. Methodology: We analyzed the Kids' Inpatient Database (KID) between 2003 and 2016 to include all patients with a primary diagnosis of AP using specific International Classification of Diseases (ICD) codes. We classified into (1) undernutrition, (2) obesity and (3) control groups, based on ICD codes, and we compared severe acute pancreatitis and healthcare utilization (length of stay and hospitalization costs). Results: Total number of AP admissions was 39,805. The prevalence of severe AP was higher in the undernutrition and obesity groups than the control group (15.7% vs. 5.8% vs. 3.5% respectively, p < 0.001). Multivariate analyses demonstrated that undernutrition and obesity were associated with 2.5 and 1.6 times increased risk of severe AP, p < 0.001. Undernutrition was associated with an additional six days of hospitalization and almost $16,000 in hospitalization costs. Obesity was associated with an additional 0.5 day and almost $2000 in hospitalization costs, p < 0.001. Conclusion: Undernutrition and obesity were associated with greater severity of AP, as well as prolonged hospitalization stay and costs. It is imperative for treating clinicians to be aware of these high-risk groups to tailor management and strive for improved outcomes.

Ensayo clínico aleatorizado para evaluar la escala mPADSS en la recuperación y alta domiciliaria tras endoscopia / No disponible

ANTECEDENTES: las guías de práctica clínica vigentes recomiendan el empleo de escalas objetivas como criterio de alta postendoscopia con sedación. OBJETIVO: valorar el tiempo de recuperación, las complicaciones y el grado de satisfacción del paciente empleando la escala mPADSS. MATERIAL Y MÉTODOS: se recogieron datos demográficos y antecedentes médicos. Se midieron constantes vitales, ansiedad y dolor abdominal preendoscopia. Se aleatorizó a los pacientes, que fueron divididos en grupo control, el cual recibió el alta según la práctica habitual, y grupo intervención, al cual se le pasó la escala mPADSS cada diez minutos, hasta alcanzar una puntuación objetivo. RESULTADOS: fueron aleatorizados 118 pacientes (78 colonoscopias, 32 gastroscopias, tres gastro + colonoscopia y 15 colangiopancreatografía retrógrada endoscópica/ultrasonografía endoscópica [CPRE/USE]). Como antecedentes médicos, 36 pacientes presentaron hipertensión arterial (HTA) y 19, diabetes mellitus (DM); 15 tenían medicación anticoagulante/antiagregante y 21, hipnótica/ansiolítica. Se requirió una media de 160 mg de propofol por paciente y se emplearon también flumazenilo y midazolam en 49 pacientes. Se registraron dos episodios de vómitos y tres de desaturación leves, todos ellos en grupo control. Incluimos 60 pacientes en grupo control y 58 en grupo mPADSS, los cuales recibieron el alta en 15 y 10 minutos de media respectivamente (p < 0,005). Se dispone de datos de seguimiento telefónico las 24-48 h de 105 sujetos. Se registraron cuatro reingresos (tres control y uno mPADSS). No hubo diferencias en cuanto a dolor y síntomas postsedación. El grado de satisfacción en cuanto a la atención y al tiempo de estancia fue similar en ambos grupos. CONCLUSIONES: este trabajo muestra la eficiencia, seguridad y satisfacción del paciente ante el empleo de la escala mPADSS, por lo que puede recomendarse su empleo

No disponible

Drug induced pancreatitis is the leading known cause of first attack acute pancreatitis in children.

BACKGROUND/OBJECTIVES: Drug induced acute pancreatitis (DIAP) as one of the acute pancreatitis (AP) risks factors is a poorly understood entity. The aim of the current study was to compare the characteristics and course of DIAP cases in children presenting with a first attack of AP. METHODS: Patients presenting with AP were included in a prospective database. We enrolled 165 AP patients that met criteria for inclusion. DIAP patients were included in that group if they were exposed to a drug known to be associated with AP and the rest were included in the non-drug induced-acute pancreatitis (non-DIAP) group. RESULTS: DIAP was observed in 40/165 (24%) of cases, 24 cases had drug-induced as the sole risk factor, and 16 had DIAP with another risk factor(s). The two groups were similar in intravenous fluid and feeding managements, but ERCP was more commonly performed in the non- DIAP group, 14 (11%), vs 0% in the DIAP group, p = 0.02. Moderately severe [9 (23%) vs 11 (9%)] and severe AP [7 (18%) vs 6 (5%)] were more commonly associated with DIAP than non- DIAP, p = 0.001. DIAP was more commonly associated with ICU stay, 10 (25%), vs 12 (10%), p = 0.01, hospital stay was longer in DIAP median (IQR) of 6 (3.9-11) days vs 3.3 (2-5.7) days in non- DIAP, p = 0.001. The DIAP group had a significantly higher proportion of comorbidities (p < 0.0001). CONCLUSIONS: DIAP is a leading risk factor for a first attack of AP in children and is associated with increased morbidity and severity of the pancreatitis course. DIAP warrants further investigation in future studies.

Usefulness of an additional lead shielding device in reducing occupational radiation exposure during interventional endoscopic procedures: An observational study.

Adoption of interventional endoscopic procedures is increasing with increasing prevalence of diseases. However, medical radiation exposure is concerning; therefore, radiation protection for medical staff is important. However, there is limited information on the usefulness of an additional lead shielding device during interventional endoscopic procedures. Therefore, we aimed to determine whether an additional lead shielding device protects medical staff from radiation.An X-ray unit (CUREVISTA; Hitachi Medical Systems, Tokyo, Japan) with an over-couch X-ray system was used. Fluoroscopy-associated scattered radiation was measured using a water phantom placed at the locations of the endoscopist, assistant, nurse, and clinical engineer. For each location, measurements were performed at the gonad and thyroid gland/eye levels. Comparisons were performed between with and without the additional lead shielding device and with and without a gap in the shielding device. Additionally, a clinical study was performed with 27 endoscopic retrograde cholangiopancreatography procedures.The scattered radiation dose was lower with than without additional lead shielding at all medical staff locations and decreased by 84.7%, 82.8%, 78.2%, and 83.7%, respectively, at the gonad level and by 89.2%, 86.4%, 91.2%, and 87.0%, respectively, at the thyroid gland/eye level. Additionally, the scattered radiation dose was lower without than with a gap in the shielding device at all locations.An additional lead shielding device could protect medical staff from radiation during interventional endoscopic procedures. However, gaps in protective equipment reduce effectiveness and should be eliminated.

ERCP and SARS-COV-2: an urgent procedure that should be immune.

BACKGROUND: Radical changes to clinical and endoscopy practice have been rapidly introduced following the spread of severe acute respiratory syndrome coronavirus 2 (SARS-COV-2). Urgent endoscopies are, however, intended to proceed as normal with additional personal protective procedures. A perceived reduction in hospital attendances may suggest a number of urgently indicated endoscopic retrograde cholangio-pancreatographies (ERCPs) are being missed. Objectives and Methods: A review of all ERCPs carried out in a large tertiary referral endoscopy unit under healthcare restrictions was compared to the same time period in previous years. The intention was to determine if ERCPs are proceeding as normal or if there is a difference in referral characteristics. RESULTS: Under service restrictions (13 March to the end of April 2020), 55 ERCPs were performed compared with 87 ERCPs in 2019. Similar numbers to 2019 were also recorded in the preceding years. One case of coronavirus disease 2019 (COVID-19) was reported in a patient in the days following ERCP, with no cases notified among staff related to endoscopy. CONCLUSIONS: A reduction in ERCP referrals raises concern that a cohort of patients with significant biliary disease remain undetected. Whether this results in later, and more severe, presentation remains to be seen but a potential surge in such cases could significantly burden all future endoscopy planning services.

Risk factors of stone recurrence after endoscopic retrograde cholangiopancreatography for common bile duct stones.

To explore the risk factors related to the recurrence of common bile duct stones (CBDS) after endoscopic retrograde cholangiopancreatography (ERCP), so as to provide reference for reducing the recurrence of CBDS after ERCP.The clinical data of 385 patients with CBDS treated by ERCP from March 2012 to May 2016 were collected. According to the diagnostic criteria of recurrence of CBDS, the patients were divided into recurrence group and control group. The general information of the patients, personal history, past history, and surgical-related information were collected. Univariate analysis and multivariate logistic regression analysis were performed on the collected data to identify risk factors for recurrence of CBDS after ERCP.A total of 262 patients were included in the study, of which 51 had recurrence of CBDS, with a recurrence rate of 19.46%. Multivariate Logistic analysis () showed greasy diet (P = .436), history of cholecystectomy (P = .639) and gallstone size (P = .809) were not independent risk factor for recurrence of stones after ERCP in CBDS. But age ≥65 (P = .013), history of common bile duct incision (P = .001), periampullary diverticulum (P = .001), common bile duct diameter ≥1.5 cm (P = .024), ERCP ≥2 (P = .003), the number of stones ≥2 (P = .015), the common bile duct angle ≤120° (P = .002) and the placement of bile duct stent (P = .004) are important independent risk factor for recurrence of stones after ERCP in CBDS.This study confirmed that ag ≥65, history of choledochotomy, periampullary diverticulum, diameter of common bile duct (≥15 mm), multiple ERCP, the number of stones ≥2, stent placement and angle of common bile duct < 120° were independent risk factors for recurrence of CBDS after ERCP.

Endoscopic ultrasound (EUS) and the management of pancreatic cancer.

Pancreatic cancer is one of the leading causes of cancer-related mortality in western countries. Early diagnosis of pancreatic cancers plays a key role in the management by identification of patients who are surgical candidates. The advancement in the radiological imaging and interventional endoscopy (including endoscopic ultrasound (EUS), endoscopic retrograde cholangiopancreatography and endoscopic enteral stenting techniques) has a significant impact in the diagnostic evaluation, staging and treatment of pancreatic cancer. The multidisciplinary involvement of radiology, gastroenterology, medical oncology and surgical oncology is central to the management of patients with pancreatic cancers. This review aims to highlight the diagnostic and therapeutic role of EUS in the management of patients with pancreatic malignancy, especially pancreatic ductal adenocarcinoma.

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

OBJECTIVES: Although early biliary drainage improves outcomes in patients with acute cholangitis, the optimal time to perform endoscopic retrograde cholangiopancreatography (ERCP) is controversial. Our aim was to evaluate the impact of timing of ERCP on mortality in hospitalized patients with acute cholangitis. METHODS: We searched PubMed, EMBASE, and The Cochrane Library (until February 2019) for studies evaluating the impact of timing of ERCP (<24, <48, and <72 hours from hospitalization) on outcomes in patients with acute cholangitis. The primary outcome was in-hospital mortality. RESULTS: Fourteen observational studies, including 84,063 patients (mean age = 66 ± 18), met the study criteria. The overall pooled in-hospital mortality with acute cholangitis was 1.9% (95% confidence interval [CI] 1.8%-7.6%), which increased to 4.3% (95% CI 1.8%-8.7%) when administrative database studies were excluded. In 9 studies, ERCP performed <24 compared with ≥24 hours decreased in-hospital mortality (odds ratio [OR] = 0.81, 95% CI 0.73-0.90; I = 0%). In 8 studies, ERCP performed <48 compared with ≥48 hours decreased in-hospital mortality (OR = 0.57, 95% CI 0.51-0.63; I = 0%). In 4 studies, ERCP performed <72 compared with ≥72 hours decreased in-hospital mortality (OR = 0.32, 95% CI 0.15-0.68; I = 0%). Furthermore, hospital stay was reduced in patients receiving ERCP <24 compared with ≥24 hours (mean difference [MD] = 3.2 days, 95% CI 2.3-4.1; I = 78%), <48 compared with ≥48 hours (MD = 3.6 days, 95% CI 2.1-5.1; I = 98%), and <72 compared with ≥72 hours (MD = 4.1 days, 95% CI 0.9-7.3; I = 63%). DISCUSSION: In observational studies, earlier ERCP performed in patients with acute cholangitis, even urgently performed <24 hours from presentation, was associated with reduced mortality. A randomized trial evaluating the impact of urgent ERCP on outcomes is needed.

Association between contrast-induced nephrotoxicity and contrast enhanced computed tomography followed by endoscopic retrograde cholangiopancreatography.

PURPOSE: To determine if endoscopic retrograde cholangiopancreatography (ERCP) performed within 72 h after contrast enhanced computed tomography (CECT) increases contrast-induced nephrotoxicity (CIN) risk in patients with abdominal complaints. METHOD: This single-center retrospective cohort study included consecutive adult patients with abdominal complaints who underwent CECT between October 1, 2016, and June 30, 2019 at an emergency department (ED). CIN was diagnosed based on serum creatinine (SCr) level >0.5 mg/dL within 72 h after CECT or that increased >25 % compared to pre-CECT level. Logistic regression analysis was performed to determine independent risk factors for CIN, including age, sex, body mass index, comorbidities, medication, pre-CECT SCr level >1.5 mg/dL, and ERCP performed within 72 h after CECT. For persistent CIN, SCr level was obtained after 3 months at the earliest and compared to data obtained within 72 h after ERCP and CECT. RESULTS: Of 1457 patients with CECT, 90 (6.2 %) underwent ERCP within 72 h after CECT and 93 (6.4 %) developed CIN. Multivariate analysis revealed that ERCP performed within 72 h after CECT (odds ratio, 3.31; 95 % confidence interval, 1.74, 6.29; p < 0.001) and pre-CECT SCr level >1.5 mg/dL (odds ratio, 9.86; 95 % confidence interval, 5.08, 19.2; p < 0.001) were independent risk factors for CIN. Of 93 patients with CIN, 10 (11 %) had persistent CIN. No specific factors were correlated with persistent CIN in the 3-month time frame. CONCLUSION: ERCP performed within 72 h after CECT and pre-CECT SCr level >1.5 mg/dL are associated with CIN development.

The diagnostic work-up and outcomes of 'presumed' idiopathic acute pancreatitis: A post-hoc analysis of a multicentre observational cohort.

INTRODUCTION: After standard diagnostic work-up, the aetiology of acute pancreatitis remains unknown in 16-27% of cases, a condition referred to as idiopathic acute pancreatitis (IAP). Determining the aetiology of pancreatitis is essential, as it may direct treatment in the acute phase and guides interventions to prevent recurrent pancreatitis. METHODS: Between 2008 and 2015, patients with acute pancreatitis were registered prospectively in 19 Dutch hospitals. Patients who had a negative initial diagnostic work-up with regard to the underlying aetiology of their pancreatitis were labelled 'presumed' IAP. The aim of this study was to assess the use of diagnostic modalities and their yield to establish an aetiology in 'presumed' IAP, and to assess recurrence rates both with and without treatment. RESULTS: Out of the 1632 registered patients, 191 patients had a first episode of 'presumed' IAP, of whom 176 (92%) underwent additional diagnostic testing: CT (n = 124, diagnostic yield 8%), EUS (n = 62, yield 35%), MRI/MRCP (n = 56, yield 33%), repeat ultrasound (n = 97, yield 21%), IgG4 (n = 54, yield 9%) and ERCP (n = 15, yield 47%). In 64 of 176 patients (36%) an aetiological diagnosis was established, mostly biliary (n = 39). In 13 out of 176 of patients (7%) a neoplasm was diagnosed. If additional diagnostic workup revealed an aetiology, the recurrence rate was lower in the treated patients than in the patients without a definite aetiology (15% versus 43%, p = 0.014). CONCLUSION: Additional diagnostic testing revealed an aetiology in one-third of 'presumed' IAP patients. The aetiology found was mostly biliary, but occasionally neoplasms were found. Identification of an aetiology with subsequent treatment reduced the rate of recurrence.