Neuro: Alzheimer’s disease: Free MSRA Podcast

🧠🎯 MSRA DEEP DIVE: Alzheimer’s Disease (High-Yield Revision)In today's episode, we break down one of the highest-yield topics in Neurology for the MSRA: Alzheimer’s Disease. This is your full, structured revision guide — perfect for both your exam prep and clinical understanding. 🚀🔑 High-Yield Revision Summary📌 Definition• Progressive neurodegenerative disorder• Causes dementia through memory loss, cognitive decline, behavioural changes• Most common cause of dementia globally💡 Mnemonic: "A for Alzheimer’s = Atrophy & Amyloid"📌 Causes• Abnormal protein accumulation:Beta-amyloid plaques (extracellular)Tau neurofibrillary tangles (intracellular)• Genetics:APOE ε4 allele (late onset risk factor)Rare familial Alzheimer’s: autosomal dominant (early onset)• Multifactorial: genetic, environmental & lifestyle interactions📌 Risk Factors• Non-modifiable:Advancing age (biggest risk factor)Family history (↑3.5x risk with 1st-degree relative)APOE4 geneCaucasian ethnicity• Modifiable:Diabetes, hypertension, obesity (especially midlife)Physical inactivity (up to 50% risk reduction with high activity)Smoking, lower education, social isolation📌 Pathophysiology• Progressive neuronal loss in hippocampus & cortex• Amyloid plaques + Tau tangles → neuronal dysfunction• Acetylcholine depletion contributes to memory impairment• Neuroinflammation & oxidative stress accelerate degeneration📌 Differential Diagnosis• Other dementias:Vascular dementiaLewy Body dementiaFrontotemporal dementia• Non-dementia mimics:Depression (pseudodementia)HypothyroidismB12 deficiencyMedicationsNormal Pressure Hydrocephalus (NPH)📌 Epidemiology (UK Data)• ~520,000 affected with Alzheimer’s in the UK• Dementia: 1 in 14 people over 65• Alzheimer’s accounts for ~two-thirds of all dementia cases• Numbers increasing with rising life expectancy📌 Clinical Features• Early:Short-term memory lossDisorientationWord-finding difficultyMood changes• Progressive:Executive dysfunctionSelf-care impairmentCommunication breakdownBehavioural disturbances (agitation, aggression)Wandering📌 Diagnosis• Primarily clinical based on hx + collateral hx• Cognitive testing: MMSE, Montreal Cognitive Assessment• Neuroimaging: MRI (rule out stroke/tumour), PET/SPECT for metabolism• Bloods to exclude mimics: FBC, U&Es, Ca2+, TFTs, B12/folate• Mild Cognitive Impairment (MCI)📌 Management (UK NICE-based)• Pharmacological:Acetylcholinesterase inhibitors (AChEIs): donepezil, rivastigmine, galantamineNMDA antagonist: memantine for moderate-severe disease• Non-pharmacological:Cognitive stimulation therapyMemory aids, structured supportCBT for depression/anxietyBehavioural therapies: aromatherapy, music, pet therapy, exercise• Supportive Care:Dementia services, community supportPalliative care planning📌 Prognosis• Progressive & irreversible• Life expectancy post-diagnosis ~4–8 years (range: up to 20 years)• Highly variable depending on age of onset, comorbidities, and care quality📌 Complications• Recurrent infections (pneumonia, UTIs)• Falls & injuries• Malnutrition, dehydration• Polypharmacy risks• Carer burden: high caregiver distress & burnout• Complete dependency in advanced stages📚 Further MSRA Revision Resources for Alzheimer’s Disease:📝 Revision Notes:https://www.passthemsra.com/topic/alzheimers-disease-revision-notes/🧠 Flashcards:https://www.passthemsra.com/topic/alzheimers-disease-flashcards/💬 Accordion Q&A Notes:https://www.passthemsra.com/topic/alzheimers-disease-accordion-qa-notes/🚀 Rapid Quiz:https://www.passthemsra.com/topic/alzheimers-disease-rapid-quiz/🎓 Neurology MSRA Course:https://www.passthemsra.com/courses/neurology-for-the-msra/#MSRA #MSRARevisionNotes #MSRATextbook #MSRAQuiz #MSRAFlashcards #MSRAQANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #Neurology #AlzheimersDisease #MSRANeurology