Paediatrics: Tricuspid Atresia: Free MSRA Podcast

🩺 FREE MSRA PODCAST – Tricuspid AtresiaYour concise, focused audio revision guide to tricuspid atresia—covering all you need to know for the MSRA, clinical exams, and paediatrics placements.🧠 Key Learning Points📌 Definition• Tricuspid atresia is a congenital heart defect where the tricuspid valve is absent or abnormally developed, blocking the normal flow of blood from the right atrium to the right ventricle.📌 Aetiology & Risk Factors• Results from abnormal heart development in utero.• Exact cause is unknown; likely multifactorial (genetic predisposition and environmental factors).• Risk factors include:– Family history of congenital heart disease– Maternal diabetes– Maternal rubella infection– Maternal exposure to certain medications– Advanced maternal age📌 Pathophysiology• Blood cannot pass from the right atrium to the right ventricle due to the absent tricuspid valve.• Blood is forced to find alternative routes (shunts), typically via:– Atrial septal defect (ASD)– Ventricular septal defect (VSD)– Patent ductus arteriosus (PDA)• These shunts are essential for survival, allowing blood to reach the lungs for oxygenation.📌 Clinical Presentation• Presents in neonates/infants with:– Cyanosis (bluish skin/lips)– Tachypnoea (rapid breathing)– Poor feeding– Failure to thrive– Clubbing (chronic cases)– Signs of heart failure: hepatomegaly, oedema📌 Differential Diagnosis• Pulmonary atresia• Ebstein’s anomaly• Critical pulmonary stenosis• Other cyanotic congenital heart diseases📌 Diagnosis• Echocardiogram: confirms absent tricuspid valve and defines cardiac anatomy• Chest X-ray: cardiomegaly, reduced or increased pulmonary markings (depending on shunt)• ECG: may show left axis deviation, atrial enlargement• Bloods: polycythaemia due to chronic hypoxaemia📌 Management• Initial stabilisation: Prostaglandin E1 infusion to keep ductus arteriosus open, oxygen therapy, treat heart failure• Staged surgical repair:– Stage 1: Systemic-to-pulmonary shunt (e.g., Blalock-Taussig shunt)– Stage 2: Bidirectional Glenn procedure– Stage 3: Fontan procedure• Long-term: Lifelong cardiology follow-up, endocarditis prophylaxis📌 Complications• Heart failure• Arrhythmias• Pulmonary hypertension• Thromboembolic events (e.g. stroke)• Developmental delays• Risk of infective endocarditis📌 Prognosis• Prognosis has improved with modern staged surgery. Most children survive into adulthood with good quality of life, but require ongoing monitoring and may experience late complications.📎 MSRA Revision Resources for Tricuspid Atresia:📝 Revision Notes: https://www.passthemsra.com/topic/tricuspid-atresia-revision-notes/🧠 Flashcards: https://www.passthemsra.com/topic/tricuspid-atresia-flashcards/💬 Accordion Q&A Notes: https://www.passthemsra.com/topic/tricuspid-atresia-accordion-qa-notes/🚀 Rapid Quiz: https://www.passthemsra.com/topic/tricuspid-atresia-rapid-quiz/🎓 Full Paediatrics Course: https://www.passthemsra.com/courses/paediatrics-for-the-msra/#MSRA #MSRARevision #Paediatrics #TricuspidAtresia #CongenitalHeart #MSRAFlashcards #MSRAQuiz #PassTheMSRA