Atrial flutter in the young: a collaborative study of 380 cases

Area of Science:

• Pediatric Cardiology
• Cardiac Electrophysiology

Background:

• Atrial flutter prevalence increases in older children with cardiac conditions.
• Understanding clinical features and prognosis is crucial for this population.

Purpose of the Study:

• To characterize pediatric patients experiencing atrial flutter.
• To identify factors influencing prognosis in these children.

Main Methods:

• Multi-institutional collaborative study involving 380 pediatric patients.
• Analysis of clinical data, treatment efficacy (pharmacological and surgical), and long-term outcomes.

Main Results:

• Atrial flutter onset occurred between ages 1-25 years (mean 10.3). Congenital heart disease was prevalent (60% repaired, 13% palliated).
• Drug therapy effectively eliminated flutter in 58%; amiodarone showed high efficacy. Surgery post-flutter onset improved control in 52%.
• Overall survival was 83% at 6.5 years. Effective drug treatment correlated with significantly lower cardiac death rates (5% vs. 20%).

Conclusions:

• Pediatric atrial flutter is associated with various heart conditions, particularly congenital heart disease.
• Pharmacological and surgical interventions can effectively manage atrial flutter in children.
• Successful flutter elimination through effective drug therapy is a key factor in improving long-term survival and reducing cardiac mortality.