ENT: Obstructive Sleep Apnoea: Free MSRA Podcast

⚕️ FREE MSRA PODCAST – Obstructive Sleep Apnoea🎧 A clear, high-yield breakdown of this common cause of snoring and daytime sleepiness – perfect for exam prep and real-life clinical scenarios.🧠 Key Learning Points📌 Definition• Obstructive Sleep Apnoea (OSA) is a disorder marked by repeated episodes of upper airway obstruction during sleep, causing apnoeas (complete pauses) or hypopnoeas (partial obstruction), resulting in poor-quality, fragmented sleep.📌 Causes & Risk Factors• Obesity – especially fat around the neck• Anatomical narrowing – large tonsils, small jaw, macroglossia• Ageing – decreased pharyngeal muscle tone• Male sex• Alcohol, sedatives, smoking• Hypothyroidism, acromegaly, nasal congestion• Family history of OSA or snoring🧠 Mnemonic: “OLD MAN’S SNORES” – Obesity, Large tonsils, Drugs (sedatives/alcohol), Male, Age, Nasal issues, Structural abnormalities, Neurological conditions, Oedema (macroglossia), Risk factors (genetics), Endocrine (hypothyroid), Smoking📌 Pathophysiology• During sleep, pharyngeal muscles relax• In predisposed individuals, the airway collapses or narrows• This causes airflow reduction or cessation, leading to:– ↓ O₂ saturation– ↑ CO₂– Micro-arousals to restore breathing• Sleep becomes fragmented, reducing time in REM and deep NREM sleep📌 Symptoms• Loud snoring, witnessed apnoeas• Excessive daytime sleepiness, fatigue• Morning headaches, dry mouth• Concentration issues, irritability• Nocturia, restless sleep, sexual dysfunction🧠 Mnemonic: “STOP BANG” – Snoring, Tiredness, Observed apnoeas, Pressure (BP ↑), BMI ↑, Age, Neck size ↑, Gender (male)📌 Differential Diagnosis• Central sleep apnoea• Primary snoring• Depression, hypothyroidism, narcolepsy• Shift work, poor sleep hygiene• Medication effects (e.g. alcohol, sedatives, SSRIs)📌 Diagnosis• Polysomnography (PSG) – gold standard sleep study• Apnoea-Hypopnoea Index (AHI):– Mild: 5–14– Moderate: 15–29– Severe: ≥30• HSAT (Home Sleep Apnoea Testing) in selected cases• STOP-BANG for screening (pre-op or clinical suspicion)• Also check TSH, HbA1c, BP, ENT anatomy📌 Management• Lifestyle: Weight loss, side sleeping, avoid alcohol/sedatives• CPAP: Gold standard treatment – splints airway open with air pressure• BiPAP: For severe/complex cases• Mandibular advancement devices: For mild/moderate OSA or CPAP intolerance• ENT referral: Consider surgery (tonsillectomy, UPPP) if structural cause• Treat nasal congestion/allergies• Modafinil only for persistent sleepiness despite CPAP – not first-line❗ NICE recommends tailored treatment and home polygraphy first when possible📌 Complications• Hypertension, heart failure, arrhythmias, stroke• Cognitive decline, memory issues, depression• Increased driving and work accidents• Insulin resistance, type 2 diabetes📌 Prognosis• Excellent with adherence to CPAP and lifestyle changes• Effective treatment improves sleep quality, cardiometabolic health, and reduces mortality• Poorly managed OSA leads to major cardiovascular and cognitive risks📎 More MSRA Resources for Obstructive Sleep Apnoea📝 Revision Notes:https://www.passthemsra.com/topic/obstructive-sleep-apnoea-revision-notes/🧠 Flashcards:https://www.passthemsra.com/topic/obstructive-sleep-apnoea-flashcards/💬 Accordion Q&A Notes:https://www.passthemsra.com/topic/obstructive-sleep-apnoea-accordion-qa-notes/🚀 Rapid Quiz:https://www.passthemsra.com/topic/obstructive-sleep-apnoea-rapid-quiz/🎓 Full Course:https://www.passthemsra.com/courses/ent-for-the-msra/🔗 All resources are part of the ENT for the MSRA course athttps://www.passthemsra.com – explore full revision guides, quizzes, flashcards, and more.Hashtags#MSRA #MSRARevisionNotes #MSRATextbook #MSRAQuiz #MSRAQuestionBank #MSRAFlashcards #MSRAQandANotes #MSRAAccordions #MultiSpecialityRecruitmentAssessment #MSRAOnlineRevision #MSRARevisionWebsite #ENT #ObstructiveSleepApnoea