ENT: Otosclerosis: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Otosclerosis🎧 A clear, high-yield breakdown of this progressive ear bone disorder causing hearing loss – perfect for exam prep and real-life clinical scenarios.🧠 Key Learning Points📌 Definition• Otosclerosis is a progressive condition involving abnormal bone growth in the middle ear, typically around the stapes bone. This leads to conductive hearing loss, and in advanced cases, mixed hearing loss if the inner ear is affected.📌 Causes & Risk Factors• Genetic predisposition (autosomal dominant)• Hormonal influences, especially during pregnancy• Possible link to measles virus• Environmental factors, e.g., non-fluoridated water (less conclusive)🧠 Mnemonic: “FARM” – Family history, Age (15–45), Race (White/Asian), Female sex📌 Pathophysiology• Abnormal bone remodelling leads to stapes fixation• Fixed stapes can't vibrate → blocked sound transmission• May affect the otic capsule and cochlea → sensorineural involvement🦴 Mechanical issue that disrupts normal sound conduction📌 Symptoms• Progressive hearing loss, especially of low frequencies• Tinnitus• Sensation of fullness or blocked ear• Dizziness (less common)🧠 Mnemonic: “HATS” – Hearing loss, Autophony, Tinnitus, Sensation of blockage📌 Differential Diagnosis• Chronic otitis media• Congenital stapes fixation (non-progressive)• Meniere’s disease (if vertigo dominates)• Tympanosclerosis, Paget’s disease, Osteogenesis imperfecta📌 Diagnosis• Pure-tone audiometry – shows conductive or mixed loss• Carhart’s notch at 2 kHz – classic finding• Tympanometry – may show reduced compliance• CT scan – visualises halo sign at oval window, rules out other causes📌 Management• Hearing aids – initial management for milder cases• Surgical options:Stapedectomy – removes and replaces stapesStapedotomy – fenestration with prosthesis• Medical options: Sodium fluoride or bisphosphonates (limited evidence)🧠 Surgery offers up to 95% improvement in conductive loss📌 Complications• Surgical:Sensorineural hearing loss (1–2%)Facial nerve injury, eardrum perforation, taste disturbance, tinnitus🧠 Mnemonic: “FLAPT” – Facial nerve, Loss of hearing, Accidental taste disturbance, Perforation, Tinnitus📌 Prognosis• Excellent with surgery – long-term hearing improvement• Hearing may decline with age but not due to surgery itself• Untreated cases may result in significant loss, but rarely complete deafness📎 More MSRA Resources for Otosclerosis📝 Revision Notes:https://www.passthemsra.com/topic/otosclerosis-revision-notes/🧠 Flashcards:https://www.passthemsra.com/topic/otosclerosis-flashcards/💬 Accordion Q&A Notes:https://www.passthemsra.com/topic/otosclerosis-accordion-qa-notes/🚀 Rapid Quiz:https://www.passthemsra.com/topic/otosclerosis-rapid-quiz/🧪 Topic Quiz:https://www.passthemsra.com/quizzes/otosclerosis/🎓 Full Course:https://www.passthemsra.com/courses/ent-for-the-msra/All resources are part of the ENT for the MSRA course on PassTheMSRA.com 🩺👉 Explore full revision guides, quizzes, flashcards, and more at:https://www.passthemsra.comHashtags#MSRA #MSRARevision #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQ&ANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #ENT #Otosclerosis