Paediatrics: Cystic Fibrosis: Free MSRA Podcast

🫁 FREE MSRA PODCAST – Cystic Fibrosis: From Genes to Clinical PracticeIn this high-yield episode, we break down everything you need to know about Cystic Fibrosis (CF) for the MSRA. We’ll take you from the core genetic defect to the real-world challenges in management, giving you crystal-clear, exam-focused insights that stick.🧠 Key Learning Points📌 Definition• Cystic Fibrosis is a genetic disorder (autosomal recessive) causing thick, sticky mucus in the lungs, GI tract, pancreas, and other organs.📌 Causes & Genetics• Faulty CFTR gene (chromosome 7) – chloride channel defect• Delta F508 is the most common mutation (≈80% UK cases)• Over 2,000 mutations identified• Autosomal recessive: both parents must be carriers• Family history = major risk factor📌 Pathophysiology• Defective CFTR = abnormal chloride/sodium transport• Dehydrated, viscous mucus blocks airways and ducts• Multi-system effects: chronic lung infections, pancreatic insufficiency, GI and liver complications📌 Classic Bugs• Staphylococcus aureus, Pseudomonas aeruginosa, Burkholderia cepacia, Aspergillus• Chronic colonisation is a key driver of disease progression📌 Symptoms & Clinical Features• Respiratory: persistent productive cough, recurrent chest infections (esp. upper lobes), wheeze, crackles, reduced FEV1, finger clubbing• GI: steatorrhoea (bulky, fatty stools), malabsorption, failure to thrive, meconium ileus in neonates (20%)• Other: nasal polyps (red flag in children), male infertility (CBAVD), delayed puberty, short stature, salty-tasting skin• Carrier rate: 1 in 25 in UK Caucasian population📌 Diagnosis• Sweat chloride test >60 mmol/L (confirmed twice)• Newborn screening• Genetic testing for CFTR mutations• Sputum cultures for infection; spirometry (reduced FEV1); sinus/lung imaging; vitamin levels, LFTs, FBC, blood glucose📌 Management• MDT care at specialist CF centres• Daily chest physiotherapy, airway clearance• Antibiotics (oral/nebulised/IV), bronchodilators, mucolytics (e.g. Dornase alfa)• Pancreatic enzyme replacement (over 85% require)• High-calorie, high-protein diet, vitamin supplementation• Treat diabetes with insulin, liver disease with UDCA• Manage nasal polyps (steroids, surgery if needed)• Psychological support, genetic counselling• Advanced: lung transplant for severe disease📌 Prognosis & Complications• Median survival now 45–57 years (huge improvement!)• Frequent lung infections → bronchiectasis, respiratory failure• Pancreatic insufficiency, CF-related diabetes, liver disease, osteoporosis, infertility• Emerging gene therapies offer hope for the future📎 More MSRA Resources for Cystic Fibrosis:📝 Revision Notes: https://www.passthemsra.com/topic/cystic-fibrosis-revision-notes/🧠 Flashcards: https://www.passthemsra.com/topic/cystic-fibrosis-flashcards/💬 Accordion Q&A: https://www.passthemsra.com/topic/cystic-fibrosis-accordion-qa-notes/🚀 Rapid Quiz: https://www.passthemsra.com/topic/cystic-fibrosis-rapid-quiz/🎓 Paediatrics Course: https://www.passthemsra.com/courses/paediatrics-for-the-msra/#MSRA #CysticFibrosis #Paediatrics #MSRARevision #MSRAQuiz #MSRAFlashcards #MSRAAccordions #CFTR #RespiratoryMedicine #GeneTherapy #ChildHealth