{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Board Pearls","title":"Chapter 6, Ep 1 of 2: H. pylori: Biology, Eradication, and Salvage","html":"","width":"100%","height":180,"duration":951,"description":"H. pylori from biology through eradication and salvage, driven by a handful of load-bearing mechanisms. Urease survival explains both diagnosis and why acid suppression causes false negatives, infection location decides gastric versus duodenal disease, and rising clarithromycin resistance has reshaped first-line therapy toward optimized bismuth quadruple and vonoprazan-based regimens.\n \nTopics covered\n\nUrease biology and diagnostic tests\nInfection location and ulcer physiology\nSuppression rule and false negatives\nSerology limits and test of cure\nExpanded testing indications\nClarithromycin resistance and first-line therapy\nVonoprazan-based regimens\nSalvage and susceptibility testing\n \n \nKey decisions\n\nHold acid blockers 1 to 2 weeks and antibiotics or bismuth 4 weeks before active testing; histology on a body biopsy is the most resilient test when the acid blocker cannot be stopped.\nSerology cannot distinguish active from past infection and is never the test of cure; retest everyone at least 4 weeks post-antibiotic with breath or stool antigen.\nClarithromycin triple is wrong empirically once local resistance exceeds 15 percent or with any prior macrolide exposure, including azithromycin.\nOptimized bismuth quadruple for 14 days is the strong first-line choice because it avoids clarithromycin and leans on the low-resistance trio.\nClarithromycin and levofloxacin are one-way streets after failure; amoxicillin, tetracycline, and rifabutin stay reusable.\nAfter two failures, get culture or molecular susceptibility testing and treat with full-dose 14-day therapy rather than guessing; de-label weak penicillin allergies first.\n \n \nThis is an AI-generated podcast, and some pronunciations may be imperfect. Thank you for your understanding, and we hope you enjoyed this content.\n \n \nStudy the full chapter on Board Pearls, with practice questions, tables and primary-guideline references: Peptic Ulcer Disease and H. pylori\nRead this episode:...","thumbnail_url":"https://img.transistorcdn.com/-FuAdDBcPDLhEoUmroZKtOBRvuBn_FHPpYlh41hOnU4/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9iNzlh/ZTU4Y2MzNWExMjQ5/MjA5OWMwMmI3ZTk5/NGFiZS5wbmc.webp","thumbnail_width":300,"thumbnail_height":300}