Gastro: Hepatitis D: Free MSRA Podcast

🎧MSRA PODCAST:Hepatitis D – The Dependent Virus You Need to Know⚕️ A concise but deep review of Hepatitis D (HDV) – the only hepatitis virus that can’t survivealone. Essential revision for the MSRA and beyond. 🧠Key Learning Points📌Definition• Hepatitis D = liver inflammation caused by the HDV virus, which requiresthe Hepatitis B virus (HBV) to replicate.• No Hep B = No Hep D🧠Mnemonic: Think Δ (delta) needs B as its base — delta needs HBV to exist. 📌Cause &Pathophysiology• HDV = defective RNA virus• Uses HBsAg (Hep B surface antigen) from HBV as itsouter coat• Two infectionpatterns: – Co-infection: HBV + HDV acquired at the sametime – Superinfection: HDV infects someone withchronic HBV → worse prognosis🧠Superinfection =more severe → faster cirrhosis 📌Transmission &Risk Factors• Spread via blood and body fluids• Common routes: – Injecting druguse – Unprotected sex – Contaminatedmedical equipment• Perinatal transmission is rare• Key risk factor: Having HBV🧠Preventing Hep B =Preventing Hep D 📌DifferentialDiagnosis• Other viral hepatitis: A, B, C, E• Non-viral causes: – Autoimmune hepatitis – Alcoholic or drug-induced liver injury – Wilson’s disease, haemochromatosis🧠Always check HBsAg –if negative, HDV is excluded 📌Epidemiology• Affects 15–20 million people worldwide• Common in: – Mediterranean – Eastern Europe – Middle East – Africa and parts of South America• Rare in UK – buthigher in migrants from endemic areas or high-risk groups (e.g. IVDU) 📌Clinical Features• Can be asymptomatic, or present with: – Fatigue – Jaundice – RUQ pain – Dark urine, palestools• Chronic HDV → ↑risk of: – Cirrhosis – Liver failure – Hepatocellular carcinoma🧠HDV hits harder thanHBV alone 📌Investigations✅Confirm HBV infection → positive HBsAg✅ Then test for: – Anti-HDV antibodies – HDV RNA (PCR)✅ Also check: – LFTs, INR,FBC, U&E – Liver imaging (USS/MRI/CT) – Liver biopsy in some cases (for fibrosisstaging) 📌Management✅Main focus: Control HBV (no HBV = no HDV replication)✅Pegylated interferonalpha: Only widely used antiviral –limited success, many side effects✅Liver transplant: For end-stage liver disease✅Newer option: Bulevirtide (NICE approved) –entry inhibitor for adults with chronic HDV and compensated disease✅Most importantprevention: Hepatitis B vaccination🧠Vaccinate againstHBV = protect against HDV 📌Complications• Chronic hepatitis• Cirrhosis• Liver failure• Hepatocellular carcinoma🧠Much higher riskwith HBV + HDV than HBV alone 📌Prognosis• Depends on liverdisease severity at diagnosis• Early detection +good HBV control → better outcomes• HDV often moreaggressive than HBV🧠Monitor closely forsigns of cirrhosis or HCC 📎Hepatitis D MSRAResources📝Revision Notes:https://www.passthemsra.com/topic/hepatitis-d-revision-notes/🧠Flashcards:https://www.passthemsra.com/topic/hepatitis-d-flashcards/💬Accordion Q&ANotes:https://www.passthemsra.com/topic/hepatitis-d-accordion-qa-notes/🚀Rapid Fire Quiz:https://www.passthemsra.com/topic/hepatitis-d-rapid-quiz/🎓Gastro Course Home:https://www.passthemsra.com/courses/gastroenterology-for-the-msra/ Hashtags#MSRA #MSRARevision#HepatitisD #HDV #HBVDependency #DeltaVirus #MSRAFlashcards #GastroMSRA#MSRAQuiz #MSRAAccordions #NICEGuidelines #HepatitisBPrevention#MSRAOnlineRevision #HepatitisDMSRA