title: Fatal paroxysmal supraventricular tachycardia in an infant.
abstract: A 37-day-old infant, without associated congenital anomalies, died following a 48-hour episode of supraventricular tachycardia. The histopathologic findings of nodoventricular and fasciculoventricular Mahaim's fibers in a setting of persistent fetal dispersion were consistent with an anatomic substrate for a reentry circuit at the specialized A-V junction.
mesh_terms: D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000473:pathology; D006801:Humans; D007223:Infant; D013614:Tachycardia, Paroxysmal / Q000473:pathology*