Atrial fibrillation in preterm neonates: A case study.

Atrial fibrillation (AF) is rarely found in newborns and infants. It is usually associated with some underlying diseases and presents as tachyarrhythmia. Here, we describe a case of AF in a preterm neonate. Paroxysmal AF and multifocal atrial tachycardia had been observed in the postnatal dynamic electrocardiogram. Further investigations revealed patent foramen ovale, pulmonary disease, heart failure and potential viral myocarditis. After receiving antiarrhythmic therapy and supportive treatment, the neonate underwent successful cardioversion and showed favorable outcomes without any recurrence.