Neuro: Transient Ischaemic Attack: Free MSRA Podcast

🎧 FREE MSRA PODCAST – Transient Ischaemic Attack (TIA): Mini-Stroke, Maximum ImportanceDon’t miss this rapid Deep Dive into TIAs—a “mini-stroke” with major exam and real-life implications. We break down what really matters for the MSRA and frontline practice: how to spot it, what to do, and why every minute counts.📝 Key Learning Points📌 Definition• TIA = sudden, stroke-like neurological symptoms caused by a temporary loss of blood flow to part of the brain (or retina).• Symptoms resolve completely within 24 hours (often in 10–30 mins) and leave no permanent damage.📌 Pathophysiology• Caused by brief blockage of a cerebral or retinal artery—usually by a clot (thrombus or embolus) or a bit of debris.• Most common sources: carotid artery atherosclerosis and atrial fibrillation (AF).📌 Causes & Risk Factors• Thrombosis (in situ clot, often from atherosclerosis)• Embolism (clot from heart, esp. AF; or from carotids)• Other risks: hypertension, diabetes, high cholesterol, smoking, obesity, sedentary lifestyle, existing heart disease, carotid stenosis, polycythaemia vera, OCP use, excess alcohol, clotting disorders📌 Classic Symptoms• Sudden weakness/numbness (face, arm, leg – usually one side)• Vision loss/blur (“curtain down” = amaurosis fugax)• Speech difficulty (dysarthria/aphasia)• Sudden loss of balance, severe vertigo• Symptoms resolve—no lasting deficit📌 Key Clinical Actions (Primary Care & Pre-Hospital)• FAST: Face, Arm, Speech, Time• Exclude hypoglycaemia: check capillary glucose immediately• Give aspirin 300mg stat (unless contraindicated)• Urgent referral to TIA/stroke clinic—within 24 hours if recent, 7 days if not• Offer secondary prevention advice: smoking, diet, exercise, BP, statins• Do NOT use ABCD2 score to delay referral (NICE)📌 Differential Diagnosis• Stroke• Migraine with aura, Todd’s paralysis (post-seizure), hemiplegic migraine• Syncope, hypoglycaemia, brain tumour, subdural haematoma, giant cell arteritis, amnesia, labyrinthitis, psychogenic causes📌 Investigations• Basic bloods: FBC, U&Es, ESR/CRP, lipids, glucose, LFTs, TFTs• ECG: screen for AF• Carotid Doppler US: check for carotid stenosis• MRI brain (preferred, esp. DWI) or CT if indicated• Echocardiogram, cardiac monitoring if source unclear• Clotting screen if young or no obvious risk factors📌 Management & Secondary Prevention• Antiplatelet therapy: Aspirin initially, then usually clopidogrel (first line); aspirin + dipyridamole if clopidogrel intolerant• Statins (regardless of initial cholesterol)• Antihypertensive therapy for BP control• Anticoagulation (DOAC or warfarin) if AF present—only after intracranial bleed is excluded• Carotid endarterectomy if >70% (ECST) or >50% (NASCET) stenosis and suitable• Aggressive risk factor modification: stop smoking, diet, exercise📌 Driving Advice (DVLA)• Group 1 (car/motorbike): Must not drive for 1 month post-TIA• No need to notify DVLA if full recovery after 1 month• Group 2 (HGV/bus): Must notify DVLA and stop driving for at least 1 year; specialist assessment needed📌 Prognosis & Complications• TIA = major warning sign: 15% of strokes are preceded by a TIA• Highest stroke risk is in the first month after TIA—urgent management saves lives• Long-term complications if untreated: stroke, permanent disability, cognitive impairment📝 Revision Notes: https://www.passthemsra.com/topic/transient-ischaemic-attack-revision-notes/🧠 Flashcards: https://www.passthemsra.com/topic/transient-ischaemic-attack-flashcards/💬 Accordion Q&A: https://www.passthemsra.com/topic/transient-ischaemic-attack-accordion-qa-notes/🚀 Rapid Quiz: https://www.passthemsra.com/topic/transient-ischaemic-attack-rapid-quiz/🎓 Neurology MSRA Course: https://www.passthemsra.com/courses/neurology-for-the-msra/#MSRA #TIA #TransientIschaemicAttack #MSRARevision #MSRAFlashcards #MSRAQuiz #MSRAAccordions #StrokePrevention #Neurology #PassTheMSRA