Renal: Post-Streptococcal Glomerulonephritis: Free MSRA Podcast

✅ MSRA Deep Dive: Post-streptococcal Glomerulonephritis (PSGN)In this high-yield episode, we take a clear, focused look at Post-streptococcal Glomerulonephritis (PSGN) — an immune-mediated renal condition that often follows strep throat or skin infections. Whether you’re prepping for the MSRA or strengthening your paediatric renal knowledge, this episode breaks down the key facts, diagnostic clues, and management pearls to help you revise smarter and remember better.🧠 Key Learning Points📌 Definition• PSGN = Immune-mediated inflammation of the glomeruli following a recent Group A beta-haemolytic streptococcal infection• Triggered by immune complex deposition rather than direct bacterial damage📌 Pathophysiology• Antibodies form against streptococcal antigens → immune complexes• These complexes deposit in the glomeruli, activating complement → inflammation• Leads to impaired filtration and renal dysfunction• Low C3 levels = clue for complement consumption• ASO titre or anti-DNase B confirms recent strep exposure📌 Epidemiology & Risk Factors• Primarily affects children aged 6–10• More common in developing countries, areas of poor hygiene or crowded housing• Recent strep pharyngitis or impetigo is key• Adults with comorbidities = higher risk of complications📌 Clinical Features• Haematuria – dark, cola- or tea-coloured urine• Oedema – periorbital or peripheral• Hypertension – common in early presentation• Oliguria, proteinuria, and systemic signs like fatigue, abdominal/flank pain, headache• May be asymptomatic in mild cases, found on urine dipstick📌 Diagnosis• Urinalysis: haematuria + proteinuria• Bloods: elevated urea/creatinine, low C3, high ASO/anti-DNase B titres• BP monitoring: often hypertensive• Renal biopsy: not usually needed unless atypical/severe – shows diffuse proliferative glomerulonephritis with granular IgG and C3 deposits📌 Differential Diagnoses• IgA nephropathy – haematuria closer to infection, normal C3• Lupus nephritis – ANA positive, systemic symptoms• Rapidly progressive GN – more aggressive presentation• PSGN key differentiators: delayed onset, low complement, positive strep serology📌 Management• Supportive – the mainstayManage fluid overload (fluid/salt restriction, diuretics)Control blood pressure (antihypertensives)Monitor renal function regularly• Antibiotics (e.g. penicillin) only if infection is still active• Immunosuppressants NOT routinely indicated• Hospitalisation if hypertensive crisis, significant oedema, or oliguria📌 Prognosis• Excellent in children – most recover fully in weeks to months• Adults may have slower recovery or long-term risks• Follow-up is crucial to monitor renal function and blood pressure📌 Complications• Acute kidney injury• Persistent hypertension• Chronic glomerulonephritis• End-stage renal disease (rare)• Higher risk in adults or those with comorbidities🔗 PSGN Revision Resources📄 Revision Notes: https://www.passthemsra.com/topic/post-streptococcal-glomerulonephritis-revision-notes/💬 Flashcards: https://www.passthemsra.com/topic/post-streptococcal-glomerulonephritis-flashcards/🧠 Accordion Q&A: https://www.passthemsra.com/topic/post-streptococcal-glomerulonephritis-accordion-qa-notes/📝 Rapid Quiz: https://www.passthemsra.com/topic/post-streptococcal-glomerulonephritis-rapid-quiz/📚 Course Hub: https://www.passthemsra.com/courses/renal-for-the-msra/🏷️ Hashtags#MSRA #MSRARevision #PostStreptococcalGlomerulonephritis #PSGN #RenalMedicine #Paediatrics #KidneyHealth #Haematuria #MSRANotes #PassTheMSRA #FreeMSRA #MSRAFlashcards #MSRAQuiz