Resp: Pulmonary Embolism: Free MSRA Podcast

🫁FREE MSRA PODCAST –Pulmonary Embolism (PE)A high-yieldbreakdown of this life-threatening buttreatable condition for your MSRA prep. 🧠Key Learning Points 📌Definition• Pulmonary embolism(PE) = blockage of pulmonary artery• Most commonlycaused by a clot from a DVT (deep veinthrombosis), usually in the legs 📌Causes & RiskFactors🧬 Think Virchow's Triad: 1. Stasis: Prolonged immobility (e.g., longflights, bedrest, surgery) 2. Endothelial injury: Trauma, surgery 3. Hypercoagulability: Cancer, pregnancy, OCP/HRT,obesity, smoking, thrombophilia (e.g., Factor V Leiden)🔑 Other risks: Previous PE/DVT, age >60, recenthospitalisation, nephrotic syndrome, antiphospholipid syndrome 📌Pathophysiology• Clot obstructspulmonary artery → ↓ perfusion, V/Q mismatch, hypoxia• ↑ Pulmonarypressure → right heart strain• Can lead to shock in massive PE 📌Symptoms• 🫁 Sudden-onset dyspnoea• ⚡Pleuritic chest pain• ❤️Tachycardia• 🌫️ Hypoxia• 🩸 Haemoptysis• 😵 Syncope or collapse (severe PE) 📌DifferentialDiagnosesAcute coronarysyndrome, pneumonia, pneumothorax, aortic dissection, anxiety, pericarditis,heart failure 📌Diagnosis🧪D-dimer: Rule out in low-risk cases📊Wells Score or PERC for pre-testprobability🩻CTPA = gold standard🌬️V/Q scan = alternative in renal failure or pregnancy🩺 ECG: Sinus tachycardia, S1Q3T3, RBBB🫀 Echo: RV strain🧪 Troponin/ABG: Assess severity 📌Wells Score Mnemonic – "CHaMPiOn":C: Clinical signs ofDVT (3 pts)H: Heart rate>100 (1.5)M: Malignancy (1)P: Previous PE/DVT(1.5)O: Other diagnosisless likely (3)I:Immobilisation/surgery <4 weeks (1.5)N: Haemoptysis (1) 📌Management (per NICE)• 🩸 Anticoagulation is cornerstone – DOACs (e.g., apixaban) are 1stline• 🧯 Thrombolysis for massive PE with shock (e.g., alteplase)• 🌬️ Oxygen therapy if hypoxic• 🧍‍♂️ Early mobilisation, compression stockings• 🚫 If anticoagulation contraindicated → consider IVC filter 📌Duration of Treatment• 3–6 months ifprovoked•Long-term/indefinite if unprovoked or high-risk (e.g., active cancer) 📌Complications⚠️ Death🔁 Recurrent PE💓 Chronic thromboembolic pulmonary hypertension(CTEPH)🫀 Right heart failure🫁 Pulmonary infarction💉 Bleeding (from anticoagulants) 📎More PulmonaryEmbolism MSRA Resources:📝 Revision Notes: https://www.passthemsra.com/topic/pulmonary-embolism-revision-notes/🧠 Flashcards: https://www.passthemsra.com/topic/pulmonary-embolism-flashcards/💬 Accordion Q&A Notes: https://www.passthemsra.com/topic/pulmonary-embolism-accordion-qa-notes/🚀 Rapid Quiz: https://www.passthemsra.com/topic/pulmonary-embolism-rapid-quiz/🎓 Respiratory Course: https://www.passthemsra.com/courses/respiratory-for-the-msra/ Hashtags#MSRA#PulmonaryEmbolism #MSRARevision #RespiratoryMSRA #VTE #CTPA #MSRAFlashcards#MSRAQuestionBank #WellsScore #PERC #NICEGuidelines #CTEPH #MedicalEducation#MSRAExam