MSK: Antiphospholipid Syndrome: Free MSRA Podcast

🎧 MSRA Deep Dive: Antiphospholipid Syndrome (APS) — Sticky Blood, Serious RisksAPS is a must-know autoimmune condition for the MSRA — causing dangerous clots, pregnancy loss, and prolonged APTT despite a prothrombotic state. Whether you’re cramming or consolidating, this high-yield episode walks through everything you need to recognise, diagnose, and manage APS effectively.🧠 What Is APS?An autoimmune disorder where antiphospholipid antibodies (aPL) trigger abnormal clotting and pregnancy complications.🔹 Can be:• Primary – occurs alone• Secondary – often linked to SLE⚠️ Key Features• Arterial or venous thrombosis• Recurrent pregnancy loss• Thrombocytopenia• Prolonged APTT despite clot risk💡 Mnemonic: Triad = Clots, Miscarriages, Low Platelets🧬 Causes & Risk Factors• Autoimmune conditions (SLE)• Infections (e.g. viral triggers)• Medications• Family history of autoimmunity🧠 Note: 5% of healthy people may have aPL without disease.🔬 Pathophysiology• aPL disrupt natural anticoagulants• Triggers clotting via: ▫️ Endothelial damage ▫️ Platelet activation ▫️ Inhibition of protein C/S & antithrombin💡 It’s persistent antibodies + clinical events that define APS.📋 Differentials• Inherited thrombophilia (e.g. Factor V Leiden)• Cancer-related hypercoagulability• SLE, MS, RA• Structural causes of miscarriage📊 Epidemiology• Prevalence: ~40 per 100,000• Female > male, esp. childbearing age• ~30% of SLE patients are aPL positive• Higher prevalence in Black populations🔍 Diagnosis = Clinical + Lab✅ Clinical:• 1+ vascular thrombosis• OR ≥1 pregnancy morbidity (≥10-week fetal death, preterm birth <34w, ≥3 miscarriages)✅ Lab (2x, ≥12 weeks apart):• Lupus anticoagulant• Anticardiolipin• Anti-β2-glycoprotein-1💡 Mnemonic: LAA🧪 Also: FBC (thrombocytopenia), prolonged APTT, Doppler/CT/MRI, echocardiogram💊 Management Overview🎯 Goal: Prevent thrombosis & manage pregnancy risk🟢 Primary prophylaxis:• Aspirin in high-risk aPL profiles🔵 Secondary prophylaxis (with clot history):• Warfarin (INR 2–3)• ↑ INR (3–4) or add aspirin if recurrent❌ DOACs not first-line👶 Pregnancy:• Avoid warfarin• Use LMWH + aspirin throughout💡 Mnemonic: WAP• Warfarin – secondary• Aspirin – primary or with LMWH• Pregnancy = LMWH + aspirin📉 Prognosis & Complications✅ Good with early diagnosis + treatment❌ Poor control can lead to:• DVT, PE• Stroke, MI• Recurrent miscarriage• Heart valve disease• Catastrophic APS (CAPS) – rare, multiple organ failure, fatal if untreated🧠 MSRA Key Tips• Think APS in young stroke or recurrent miscarriage cases• Confirm aPL on two tests, 12 weeks apart• Prolonged APTT + thrombosis = red flag• Know LAA & WAP mnemonics for exams📚 MSRA APS Resources📝 Revision Notes🃏 Flashcards📖 Accordion Q&A Notes🎯 Rapid Quiz🧠 Practice Quiz🌐 More Revision:🔗 www.PassTheMSRA.com🔗 www.FreeMSRA.com🏁 SummaryAPS = Autoimmune, Clot-prone, Pregnancy-risk condition.🔍 Recognise clinical + lab criteria💊 Use warfarin, aspirin, LMWH appropriately🧠 Know red flags for exam day — and real life#MSRA #AntiphospholipidSyndrome #APS #StickyBlood #Haematology #ClottingDisorders #MSRAQuiz #PassTheMSRA #FreeMSRA #MSRAFlashcards #MedicalRevision #WAP #LAA #MSRANotes #SLE