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Gut and Liver Jan 2020Although acid suppressants are widely used for the prevention or treatment of drug-induced upper gastrointestinal bleeding (GIB), evidence regarding the prevention of... (Meta-Analysis)
Meta-Analysis
Although acid suppressants are widely used for the prevention or treatment of drug-induced upper gastrointestinal bleeding (GIB), evidence regarding the prevention of anticoagulant-related GIB is scarce. The aim of this study was to evaluate the protective effect of acid suppressants against anticoagulant-related GIB. A systematic review was conducted of studies that evaluated the protective effect of acid suppressants against anticoagulant-related GIB found in PubMed, the Cochrane library, Embase, and KoreaMed from the date of database inception to April 2018. Random effect model meta-analyses with sensitivity analyses were conducted. The methodological quality of each included publication was evaluated using the Risk of Bias Assessment Tool for Nonrandomized Studies. Publication bias was assessed. In total, six nested case-control or cohort studies were identified and analyzed. Proton-pump inhibitors (PPI) had a protective effect against upper GIB in patients on dicumarinics (risk ratio [RR], 0.56; 95% confidence interval [CI], 0.38 to 0.83; , 0%); however, the histamine-2 receptor antagonist did not have the same effect (RR, 0.97; 95% CI, 0.52 to 1.81; , 0%). Acid suppressants did not have a protective effect against GIB in patients on dabigatran (hazard ratio, 0.78; 95% CI, 0.44 to 1.37; , 81.8%). The protective effect of PPIs against dicumarinics-related upper GIB was clear, while there was no evidence supporting the protective effect of acid suppressants against dabigatran-related GIB. However, in the absence of randomized trials demonstrating a lack of bias, solid conclusions cannot be drawn.
Topics: Adult; Aged; Antacids; Anticoagulants; Case-Control Studies; Cohort Studies; Coumarins; Dabigatran; Female; Gastrointestinal Hemorrhage; Histamine H2 Antagonists; Humans; Male; Middle Aged; Odds Ratio; Proton Pump Inhibitors; Treatment Outcome
PubMed: 30974930
DOI: 10.5009/gnl19009 -
BMJ Open Gastroenterology Sep 2020Current guidelines recommend bismuth-containing quadruple therapy (BQT) and quinolone-containing therapy after failure of first-line eradication therapy. However, the... (Comparative Study)
Comparative Study Meta-Analysis
BACKGROUND
Current guidelines recommend bismuth-containing quadruple therapy (BQT) and quinolone-containing therapy after failure of first-line eradication therapy. However, the optimum regimen of second-line eradication therapy remains elusive. We conducted a network meta-analysis to compare the relative efficacy of 16 second-line eradication regimens.
METHODS
Three major bibliographic databases were reviewed to enrol relevant randomised controlled trials between January 2000 and September 2018. Network meta-analysis was conducted by STATA software and we performed subgroup analysis in countries with high clarithromycin resistance and high levofloxacin resistance, and in patients with documented failure of first-line triple therapy.
RESULTS
Fifty-four studies totalling 8752 participants who received 16 regimens were eligible for analysis. Compared with a 7-day BQT, use of probiotic add-on therapy during, before, and after second-line antibiotic regimens, quinolone-based sequential therapy for 10-14 days, quinolone-based bismuth quadruple therapy for 10-14 days, bismuth quadruple therapy for 10-14 days, and quinolone-based triple therapy for 10-14 days were significantly superior to the other regimens. Subgroup analysis of countries with high clarithromycin resistance and high levofloxacin resistance revealed that the ranking of second-line eradication regimens was distributed similarly in each group, as well as in patients with failure of first-line triple therapy.
CONCLUSION
We conducted a detailed comparison of second-line regimens according to different antibiotic resistance rates and the results suggest alternative treatment choices with potential benefits beyond those that could be achieved using salvage therapies recommended by guidelines.
Topics: Adult; Antacids; Anti-Bacterial Agents; Bismuth; Clarithromycin; Drug Resistance, Multiple; Drug Therapy, Combination; Female; Helicobacter Infections; Helicobacter pylori; Humans; Levofloxacin; Male; Metronidazole; Middle Aged; Network Meta-Analysis; Outcome Assessment, Health Care; Practice Guidelines as Topic; Proton Pump Inhibitors; Quinolones; Randomized Controlled Trials as Topic; Tetracycline
PubMed: 32883715
DOI: 10.1136/bmjgast-2020-000472