Isolated neonatal atrial flutter: clinical features, prognosis and therapy

Area of Science:

• Pediatric Cardiology
• Neonatal Arrhythmias
• Electrophysiology

Background:

• Idiopathic neonatal atrial flutter lacks established treatment guidelines and prognostic data.
• Understanding the clinical course and optimal management is crucial for affected infants.

Purpose of the Study:

• To evaluate the clinical course, acute and chronic treatment, and prognosis of idiopathic neonatal atrial flutter.
• To assess treatment effectiveness in a cohort of infants.

Main Methods:

• Studied six infants with neonatal atrial flutter and no structural heart disease.
• Evaluated acute and chronic treatments including DC shock, transesophageal pacing, and antiarrhythmic drugs (amiodarone, digoxin, propafenone).
• Assessed treatment efficacy via Holter monitoring and transesophageal atrial pacing.

Main Results:

• Two patients with heart failure improved with DC shock.
• Amiodarone successfully achieved cardioversion in three patients after other drugs failed.
• No arrhythmia recurrences or therapy side-effects were observed during follow-up.

Conclusions:

• Neonatal atrial flutter has significant acute morbidity but an excellent long-term prognosis.
• Electrical cardioversion is the primary treatment for hemodynamically unstable patients.
• Class III antiarrhythmic drugs, particularly amiodarone, are preferred for other cases.