The management of endoscopic retrograde cholangio- pancreatography-related infections risk: results of an italian survey at regional level.

Background and aim: Among the Endoscopic retrograde cholangiopancreatography (ERCP) adverse events, an increasingly arising problem is the transmission of Multi Drug Resistant (MDR) Bacteria through duodenoscopes. The aim of this survey was to evaluate the current clinical practice of management of ERCP associated infections in Emilia-Romagna, Italy. Methods: An online survey was developed including 12 questions on management of ERCP associated infections risk. The survey was proposed to all 12 endoscopy centers in Emilia Romagna that perform at least > 200 ERCPs per year. Results: 11 centers completed the survey (92%). Among all risk factors of ERCP infections, hospitalization in intensive care units, immunosuppressant therapies, and previous MDR infections have achieved a 80 % minimum of concurrence by our respondents. The majority of them did not have a formalized document in their hospital describing categories and risk factors helpful in the detection of patients undergoing ERCP with an high-level infective risk (9/11, 82%). Most centers (8/11, 72%) do not perform screening in patients at risk of ERCP infections. Post procedural monitoring is performed by 6 of 11 centers (55%). Conclusion: Our survey showed that, at least at regional level, there is a lack of procedures and protocols related to the management of patients at risk of ERCP infections.

What gastroenterologists should know about direct oral anticoagulants.

Direct oral anticoagulants are being increasingly used in patients with non-valvular atrial fibrillation and venous thromboembolism, due to their improved efficacy/ safety ratio, a predictable anticoagulant effect without need for routine coagulation monitoring, and fewer food and drug interactions compared with vitamin K antagonists. Gastrointestinal bleeding remains a serious complication, whose management is challenging for gastroenterologists due to the lack of a standardized clinical approach. Clinical experience on periendoscopic management of these drugs is still limited and there is a paucity of clinical data supporting guidelines recommendations', and this ultimately turns out in different, unsubstantiated and potentially harmful practices of patient management. Present study will provide a thorough revision on the risk of GI bleeding for DOAC therapy and the identification of patient risk factors to individualize treatment. Moreover, the approach to management of DOACs in case of bleeding complications is discussed, and an algorithm of different strategies in presence or not of plasma level measurement is proposed. Finally the periendoscopic management for elective procedures will be reviewed, at the light of the guideline recommendations and new evidences from observational studies.

Impact of the COVID-19 pandemic on Gastroenterology Divisions in Italy: A national survey.

BACKGROUND: In Italy, the spread of the COVID-19 pandemic has stressed the entire healthcare system and required a huge re-organization of many Divisions, including those of Gastroenterology. AIMS: to assess the impact of COVID-19 pandemic on Gastroenterology Divisions across Italy. METHODS: All members of the Italian Society of Gastroenterology (SIGE) were invited to answer a web-based survey. RESULTS: Data of 121 hospitals from all 20 Italian regions were analyzed. Overall, 10.7% Gastroenterology Divisions have been converted to Covid Units. Outpatients consultations, endoscopic and ultrasound procedures were limited to urgencies and oncology indications in 85.1%, 96.2% and 72.2% of Units, respectively, and 46.7% of them suspended the screening for colorectal cancer. Moreover, 72.2% of the staff received a training for use of personal protective equipment, although 45.5% did not have sufficient devices for adequate replacement. Overall, 132 healthcare workers in 41 Gastroenterology Divisions were found to be infected. CONCLUSION: This is the first study to evaluate, at a country level, the impact of COVID-19 outbreak on Gastroenterology Divisions. Substantial changes of practice and reduction of procedures have been recorded in the entire country. The long-term impact of such modifications is difficult to estimate but potentially very risky for many digestive diseases.

Endoscopic submucosal dissection for superficial premalignant and malignant epithelial neoplasms of the digestive tract: a real-life experience in Italy.

OBJECTIVE: Endoscopic submucosal dissection (ESD) is a technique for en bloc resection of neoplastic lesions of the digestive tract. Endoscopic submucosal dissection was developed in Asia, and data from Western countries are scarce. Our study aimed to assess the efficacy and safety of ESD for resection of superficial premalignant and malignant epithelial neoplasms in a tertiary center in Italy. PATIENTS AND METHODS: All patients with gastrointestinal lesions who underwent ESD between January 2013 and December 2018 in our center were retrospectively evaluated. Technical success, en bloc, R0, curative resection, and complication rates were assessed. RESULTS: A total of 107 lesions (stomach, no.=41; rectum, no.=32; colon, no.=28; esophagus, no.=5; duodenum, no.=1) were resected by ESD in 93 patients. Endoscopic submucosal dissection was technically successful in 99.1% (106/107) of lesions. Among the 90 superficial premalignant and malignant epithelial neoplasms, en bloc, and R0 resection rates were 97.8% (no.=88) and 75.6% (no.=68), respectively. Major complications occurred in 9.3% (10/107) of cases: 4 (3.7%) were perforations and 6 (5.6%) were major bleedings. All complications, but two which needed surgery, were managed endoscopically. CONCLUSIONS: Our study shows that ESD is a feasible, effective, and safe technique in a Western country.

Postreflux swallow-induced peristaltic wave index and nocturnal baseline impedance can link PPI-responsive heartburn to reflux better than acid exposure time.

BACKGROUND: Acid exposure time (AET) is considered the most useful parameter to predict response of reflux-related heartburn to medical or surgical treatment. However, recent studies showed high rates of heartburn response to proton pump inhibitor (PPI) therapy in patients with normal AET. We aimed to compare the efficacy of postreflux swallow-induced peristaltic wave (PSPW) index and mean nocturnal baseline impedance (MNBI) with AET in linking PPI-responsive heartburn to reflux. METHODS: Off-therapy impedance-pH tracings from 425 patients, 317 with PPI-responsive and 108 with PPI-refractory heartburn were blindly re-analyzed. Demographic and endoscopic characteristics, conventional impedance-pH variables, PSPW index, and MNBI were assessed with multivariate logistic regression to identify factors independently associated with PPI responsiveness. Prediction models were developed to assess the strength of reflux linkage with factors independently associated with PPI responsiveness by calculating the area under the curve (AUC) at receiver-operating-characteristic (ROC) analysis. KEY RESULTS: At multivariate logistic regression analysis, AET, MNBI, and PSPW index were the only factors independently associated with PPI responsiveness, abnormal values found in 60%, 76%, and 92% of PPI-responsive cases (P<.017). At ROC analysis, PSPW index (AUC:.794, P=.002) and MNBI (AUC: 0.742, P=.003), both separately and combined (AUC: 0.811, P<.001) linked reflux with PPI-responsiveness better than AET (AUC: 0.687). CONCLUSIONS & INFERENCES: AET, PSPW index, and MNBI are independently associated with PPI-responsive heartburn. PSPW index and MNBI can link PPI-responsive heartburn to reflux better than AET and should become part of the standard analysis of impedance-pH tracings.

Barriers against split-dose bowel preparation for colonoscopy.

OBJECTIVE: Although split regimen is associated with higher adenoma detection and is recommended for elective colonoscopy, its adoption remains suboptimal. The identification of patient-related barriers may improve its implementation. Our aim was to assess patients' attitude towards split regimen and patient-related factors associated with its uptake. DESIGN: In a multicentre, prospective study, outpatients undergoing colonoscopy from 8:00 to 14:00 were given written instructions for 4 L polyethylene glycol bowel preparation, offering the choice between split-dose and day-before regimens and emphasising the superiority of split regimen on colonoscopy outcomes. Uptake of split regimen and association with patient-related factors were explored by a 20-item questionnaire. RESULTS: Of the 1447 patients (mean age 59.2±13.5 years, men 54.3%), 61.7% and 38.3% chose a split-dose and day-before regimens, respectively. A linear correlation was observed between time of colonoscopy appointments and split-dose uptake, from 27.3% in 8:00 patients to 96% in 14:00 patients (p<0.001, χ2 for linear trend). At multivariate analysis, colonoscopy appointment before 10:00 (OR 0.14, 95% CI 0.11 to 0.18), travel time to endoscopy service >1 h (OR 0.55, 95% CI 0.38 to 0.79), low education level (OR 0.72, 95% CI 0.54 to 0.96) and female gender (OR 0.74, 95% CI 0.58 to 0.95) were inversely correlated with the uptake of split-dose. Overall, the risk of travel interruption and faecal incontinence was slightly increased in split regimen patients (3.0% vs 1.4% and 1.5% vs 0.9%, respectively; p=NS). Split regimen was an independent predictor of adequate colon cleansing (OR 3.34, 95% CI 2.40 to 4.63) and polyp detection (OR 1.46, 95% CI 1.11 to 1.92). CONCLUSION: Patient attitude towards split regimen is suboptimal, especially for early morning examinations. Interventions to improve patient compliance (ie, policies to reorganise colonoscopy timetable, educational initiatives for patient and healthcare providers) should be considered. TRIAL REGISTRATION NUMBER: NCT02287051; pre-result.

Large diameter fully covered self-expanding metal stent placement for palliation of proximal malignant esophageal strictures.

In patients with malignant esophageal strictures within 6 cm from the upper esophageal sphincter, self-expanding metal stents placement represents a challenge because there is an increased risk of complications. The aim of this study was to assess the safety and effectiveness of large-diameter WallFlex(®) fully covered self-expanding metal stents for palliation of patients with proximal malignant esophageal strictures. From March 2010 to December 2012, 12 patients with proximal strictures (4-6 cm from the upper esophageal sphincter) and six with very proximal strictures (<4 cm from the upper esophageal sphincter) were palliated with this fully covered self-expanding metal stent and included in the study. Technical success was 100% and clinical success was 94%. The mean baseline dysphagia score was 3.2, and 1 week after stenting it improved significantly to 1.3 (P < 0.001). Early complications occurred in four patients, more frequently in patients with very proximal strictures as compared with patients with proximal strictures (P = 0.02). Late complications occurred in five patients, and there were no differences between patients with very proximal strictures or proximal strictures (P = 0.245). The mean survival after stent placement was 119 days, and no differences between patients with very proximal strictures versus proximal strictures were found (P = 0.851). There was no stent-related mortality or 30-day mortality. Our results suggested that a large-diameter fully covered self-expanding metal stent is an effective and secure device for palliation of patients with proximal malignant esophageal strictures.

Gamma rays induce a p53-independent mitochondrial biogenesis that is counter-regulated by HIF1α.

Mitochondrial biogenesis is an orchestrated process that presides to the regulation of the organelles homeostasis within a cell. We show that γ-rays, at doses commonly used in the radiation therapy for cancer treatment, induce an increase in mitochondrial mass and function, in response to a genotoxic stress that pushes cells into senescence, in the presence of a functional p53. Although the main effector of the response to γ-rays is the p53-p21 axis, we demonstrated that mitochondrial biogenesis is only indirectly regulated by p53, whose activation triggers a murine double minute 2 (MDM2)-mediated hypoxia-inducible factor 1α (HIF1α) degradation, leading to the release of peroxisome-proliferator activated receptor gamma co-activator 1ß inhibition by HIF1α, thus promoting mitochondrial biogenesis. Mimicking hypoxia by HIF1α stabilization, in fact, blunts the mitochondrial response to γ-rays as well as the induction of p21-mediated cell senescence, indicating prevalence of the hypoxic over the genotoxic response. Finally, we also show in vivo that post-radiotherapy mitochondrial DNA copy number increase well correlates with lack of HIF1α increase in the tissue, concluding this may be a useful molecular tool to infer the trigger of a hypoxic response during radiotherapy, which may lead to failure of activation of cell senescence.

Randomised clinical trial: preventive treatment with topical rectal beclomethasone dipropionate reduces post-radiation risk of bleeding in patients irradiated for prostate cancer.

BACKGROUND: Radiotherapy is an established treatment modality for prostate cancer; however, up to a third of patients develops a radiation-induced proctopathy. AIM: To assess the effect of topical beclomethasone dipropionate (BDP) in the prevention of radiation-induced proctopathy in patients undergoing radiotherapy for prostate cancer through a double-blind, placebo-controlled, randomised trial. METHODS: Patients were randomised either to BDP or to placebo (PL). Patients received daily a 3mg BDP enema or identical-looking PL during radiotherapy and, subsequently, two 3mg BDP suppositories or PL for 4 more weeks. Clinical and endoscopic evaluations before, 3 and 12months after the end of radiotherapy were assessed with the RTOG/EORTC toxicity scales, the modified Simple Clinical Colitis Activity Index (SCCAI), the modified Inflammatory Bowel disease Quality of Life Index (IBDQ) and the Vienna Rectoscopy Score (VRS). RESULTS: From June 2007 to October 2008, 120 patients were randomised to the BDP (n=60) and PL (n=60) arms and were followed up for 12months. The overall assessment of rectal side effects did not show significant differences between the two groups of treatment. However, when only rectal bleeding was considered, a significantly reduced risk was observed in patients on BDP (OR 0.38; 95% CI 0.17-0.86; P=0.02; NNT=5). Patients on BDP had also significantly lower VRS scores (P=0.028) and significantly higher IBDQ scores (P=0.034). CONCLUSIONS: Preventive treatment with topical rectal BDP during radiotherapy for prostate cancer significantly reduces the risk of rectal bleeding and radiation-induced mucosal changes and improves patient's quality of life, but does not influence other radiation-induced symptoms.

EUS-guided biliary drainage with placement of a new partially covered biliary stent for palliation of malignant biliary obstruction: a case series.

Endoscopic ultrasonography-guided biliary drainage (EUS-BD) has been developed as an alternative drainage technique in patients with obstructive jaundice where endoscopic retrograde cholangiopancreatography (ERCP) has failed. Between July 2008 and December 2009, 16 patients (9 men; median age 79 years) with biliopancreatic malignancy, who were candidates for alternative techniques of biliary decompression because ERCP had been unsuccessful, underwent EUS-BD with placement of a transmural or transpapillary partially covered nitinol self-expandable metal stent (SEMS). EUS-assisted cholangiography was successful in all patients, with definition of the relevant anatomy, but biliary drainage was successfully performed in only 12 (75 %) of the 16 patients (9 choledochoduodenostomies with SEMS placement and 3 biliary rendezvous procedures with papillary SEMS placement), with regression of the cholestasis. No major complications and no procedure-related deaths occurred. There was one case of pneumoperitoneum which was managed conservatively. The median follow-up was 170 days. During the follow-up, eight patients of the 12 patients in whom biliary draining was successful died; four are currently alive. None of the patients required endoscopic reintervention. This series demonstrated that EUS-BD with a partially covered SEMS has a high rate of clinical success and low complication rates, and could represent an alternative choice for biliary decompression.

Can early precut implementation reduce endoscopic retrograde cholangiopancreatography-related complication risk? Meta-analysis of randomized controlled trials.

BACKGROUND AND STUDY AIMS: Precut papillotomy is considered a risk factor for endoscopic retrograde cholangiopancreatography (ERCP)-related complications; however whether the complication risk is due to precut itself or to the prior prolonged attempts is still debated; therefore, early precut implementation has been suggested to reduce the complication rate. We conducted a meta-analysis of randomized controlled trials (RCTs) comparing cannulation and complication rates of early precut implementation with persistent attempts by the standard approach. METHODS: RCTs that compared cannulation and complication rates of the early precut implementation and of persistent attempts by the standard approach were included. Summary effect sizes were estimated by odds ratio (OR) with a random-effects model and by Peto OR. RESULTS: Six RCTs with a total of 966 subjects met the inclusion criteria. Overall cannulation rates were 90 % in both randomization groups (OR 1.20; 95 % confidence interval [CI] 0.54 - 2.69). Post-ERCP pancreatitis developed in 2.5 % of patients randomized to the early precut groups and in 5.3 % of patients from the persistent attempts groups (OR 0.47; 95 %CI 0.24 - 0.91). The overall complication rates, considering pancreatitis, bleeding, cholangitis, and perforation rates, were 5.0 % in the early precut groups and 6.3 % in the persistent attempts groups (OR 0.78; 95 %CI 0.44 - 1.37). CONCLUSIONS: RCTs that investigated the issue of timing of the precut procedure were limited. Current evidence suggests that in experienced hands the early implementation of precut and persistent cannulation attempts have similar overall cannulation rates; early precut implementation reduces post-ERCP pancreatitis risk but not the overall complication rate. Further studies are needed to confirm these findings.

Endoscopic argon plasma coagulation for the treatment of gastric antral vascular ectasia-related bleeding in patients with liver cirrhosis.

BACKGROUND AND AIM: Gastric antral vascular ectasia (GAVE) is a cause of bleeding in patients with liver cirrhosis. Argon plasma coagulation (APC) is the most used endoscopic treatment for GAVE-related bleeding. Treatment failures have been described in patients with haemorrhagic diathesis; post-procedure complications include haemorrhages and septicaemia. The aim of the study was to evaluate efficacy and safety of APC treatment of GAVE-related bleeding in patients with liver cirrhosis. METHODS: Patients included were suffering from GAVE-related bleeding and liver cirrhosis. APC treatment was performed until eradication. Resolution of transfusion-dependent anaemia and evaluation of complications were the primary outcomes. RESULTS: 20 patients (16 Child C and 4 Child B) were enrolled and prospectively followed for a mean period of 28 months. GAVE eradication was achieved in all patients after a median of 3 sessions (range 1-10). Resolution of anaemia was achieved in 18 patients. Six patients had relapse of GAVE after a mean of 7.7 months, successfully retreated by APC. Hyperplastic polyps developed in 3 patients causing active bleeding in 2 cases. Five patients had liver transplants and 1 had a relapse of GAVE after transplantation. CONCLUSION: APC is an effective and safe endoscopic treatment for GAVE in patients with liver cirrhosis.

Gastro-oesophageal reflux symptoms, oesophagitis and Barrett's oesophagus in the general population: the Loiano-Monghidoro study.

OBJECTIVE: Existing endoscopy-based data on gastro-oesophageal reflux disease (GORD) in the general population are scarce. This study aimed to evaluate typical symptoms and complications of GORD, and their associated risk factors, in a representative sample of the Italian population. METHODS: 1533 adults from two Italian villages were approached to undergo symptom assessment using a validated questionnaire and upper gastrointestinal endoscopy. Data were obtained from 1033 individuals (67.4% response rate). RESULTS: The prevalence of reflux symptoms was 44.3%; 23.7% of the population experienced such symptoms on at least 2 days per week (frequent symptoms). The prevalence rates of oesophagitis and Barrett's oesophagus in the population were 11.8% and 1.3%, respectively. Both frequent (relative risk (RR) 2.6; 95% confidence interval (CI) 1.7 to 3.9) and infrequent (RR 1.9; 95% CI 1.2 to 3.0) reflux symptoms were associated with the presence of oesophagitis. No reflux symptoms were reported by 32.8% of individuals with oesophagitis and 46.2% of those with Barrett's oesophagus. Hiatus hernia was associated with frequent reflux symptoms and oesophagitis, and was present in 76.9% of those with Barrett's oesophagus. We found no association between body mass index and reflux symptoms or oesophagitis. CONCLUSIONS: GORD is common in Italy, but the prevalence of Barrett's oesophagus in the community is lower than has been reported in selected populations. Both frequent and infrequent reflux symptoms are associated with an increased risk of oesophagitis. Individuals with oesophagitis and Barrett's oesophagus often have no reflux symptoms.

Systematic review: Helicobacter pylori eradication for the prevention of gastric cancer.

BACKGROUND: Helicobacter pylori is recognized as one of the most significant risk factors for gastric cancer, and H. pylori eradication has been proposed as a possible primary chemo-preventive strategy to reduce gastric cancer incidence. AIM: To evaluate the available evidence on the efficacy of H. pylori eradication in the prevention of gastric cancer. METHODS: Epidemiological, observational and interventional studies, as well as decisional models, were taken into account in this review. RESULTS: Large-scale epidemiological studies clearly link H. pylori infection with non-cardia gastric cancer. Current evidence suggests that, in a subpopulation of treated subjects, H. pylori eradication prevents the progression of preneoplastic lesions. Studies that have attempted to evaluate the effect of H. pylori eradication on the incidence of gastric cancer have not provided definitive answers. H. pylori eradication seems to reduce the incidence of gastric cancer in patients without baseline precancerous gastric lesions. Decisional models suggest that H. pylori screening could be cost-effective, but there is not yet sufficient evidence to support the setting up of a general screening programme. CONCLUSION: Helicobacter pylori eradication is a plausible intervention for gastric cancer prevention; however, it seems to be relevant in only a subset of subjects.

Helicobacter pylori: optimum diagnosis and test of cure.

The fact that about 50% of the world's population is infected with Helicobacter (H.) pylori and the important role that this bacterium plays in public health have been important incentives in the search for accurate diagnostic methods. A large number of invasive and non-invasive methods have been used to diagnose H. pylori infection. Each method has its advantages and disadvantages and each practitioner should choose the best diagnostic method according to the facilities available. Non-invasive tests for the diagnosis of H. pylori infection are largely used in clinical practice and in management of patients with gastroduodenal disease. Serology is the most widespread test but its use is not advised in the post-treatment follow-up. The Urea Breath Test is a simple, safe and highly accurate method ideal for evaluating the short-term follow-up of H. pylori eradication after therapy.