Cardiomyopathy Research Articles and Links Clinical, pathological, and biochemical studies in a patient with propionic acidemia and fatal cardiomyopathy. Clinical Approach to Genetic Cardiomyopathy in Children Children’s Cardiomyopathy Foundation Propionic Acidemia: a rare case of cardiomyopathy Pamphlets/Educational Material from Children’s Cardiomyopathy Foundation Long QT Coincidence of Long QT Syndrome and Propionic Acidemia.