Atrial Tachycardia in the Neonate

Atrial tachycardia including focal atrial tachycardia and atrial flutter is seen in neonates with some frequency. The ability to correctly diagnose and treat the arrhythmias is an important skillset for anyone caring for newborn patients. Overall, the prognosis of atrial tachycardia in most neonates is excellent. In the case of atrial flutter, after termination of the presenting tachycardia, recurrence is rare. In focal atrial tachycardia, treatment is often indicated but can often be discontinued later in infancy or toddlerhood. In this article, we endeavor to guide clinicians caring for neonates by helping to differentiate mechanisms and counsel on therapy.