Title: Pediatric Cardiology / Cardiomyopathy General
Tags: cardiomyopathy cardiomyopathy-general peds-cardio high-yield genetics arvc dcm icd lmna lvnc phenocopies rcm tachycardia-induced

Q: What is the most common cardiomyopathy type in children?
A: Dilated cardiomyopathy (DCM) - ~60%

Q: What percentage of "idiopathic" DCM have genetic cause?
A: ~30%

Q: Should genetic testing be performed in pediatric cardiomyopathy?
A: YES - recommended for ALL children with cardiomyopathy

Q: What are phenocopies of HCM that need specific treatment?
A: Fabry (ERT), Pompe (ERT), Danon (early transplant), Noonan, PRKAG2

Q: What mutation in DCM is high-risk for sudden death?
A: LMNA mutation (especially with conduction disease) - ICD indicated

Q: What characterizes restrictive cardiomyopathy (RCM)?
A: Diastolic dysfunction, biatrial enlargement, poor prognosis, high PH risk

Q: What is ARVC?
A: Arrhythmogenic cardiomyopathy - fibrofatty replacement; RV classically but LV common; exercise-related SCD risk

Q: What is LVNC?
A: Left ventricular noncompaction - excessive trabeculation; may overlap with DCM; arrhythmia and thromboembolism risk

Q: What causes tachycardia-induced cardiomyopathy?
A: Uncontrolled sustained tachycardia; REVERSIBLE with rate/rhythm control