Determinants of recurrent atrial flutter after cardioversion

Area of Science:

• Cardiology
• Electrophysiology

Background:

• Atrial flutter is a common supraventricular tachyarrhythmia.
• Electrical cardioversion is a treatment option for atrial flutter.
• Predicting recurrence after cardioversion is clinically important.

Purpose of the Study:

• To identify factors influencing the maintenance of sinus rhythm after electrical cardioversion for pure atrial flutter.
• To determine predictors of recurrent atrial flutter.

Main Methods:

• Retrospective study of 18 male patients undergoing electrical cardioversion for pure atrial flutter.
• Assessment of clinical, electrocardiographic, and echocardiographic parameters.
• Follow-up at six months to assess rhythm status.

Main Results:

• 55% of patients experienced recurrent atrial flutter within six months.
• No significant differences in age, symptoms, ECG abnormalities, or medications between recurrent and non-recurrent groups.
• Left atrial size > 45 mm and left ventricular ejection fraction < 45% were significant predictors of recurrence.

Conclusions:

• Recurrent atrial flutter is frequent after electrical cardioversion.
• Echocardiographic parameters, specifically left atrial size and left ventricular ejection fraction, are key predictors of recurrence.
• Patients with enlarged left atria or reduced ejection fraction are at high risk for recurrent atrial flutter.