Is ablation of atrial flutter always safe?

Area of Science:

• Cardiology
• Electrophysiology
• Medical Devices

Background:

• Radiofrequency ablation is a common and safe procedure for typical atrial flutter.
• Evaluating the incidence and causes of severe adverse events (AE) post-ablation is crucial.

Purpose of the Study:

• To determine the prevalence of adverse events following typical atrial flutter ablation.
• To identify the specific causes and risk factors associated with these adverse events.

Main Methods:

• Conventional radiofrequency ablation using an 8-mm-tip electrode catheter.
• Procedure involved a maximum power of 70 W and a target temperature of 70°C for 60 seconds.
• Study included 883 patients (685 males, 198 females) with a mean age of 64 ± 11.5 years; 664 had pre-existing heart disease.

Main Results:

• Overall AE rate was 5% (44 patients).
• Life-threatening AE occurred in 14 patients, including cardiac shock, renal failure, tamponade, bleeding leading to death, and complete atrioventricular block.
• Less serious AE in 30 patients included transient bradycardia, bleeding, and transient ischemic attack. Female gender and presence of ischemic or valvular heart disease were significant risk factors.

Conclusions:

• Adverse events occurred in 5% of patients post-atrial flutter ablation.
• Most AE are avoidable through careful management of anticoagulation and rate-control medications.
• Controlling these factors can improve patient safety during and after atrial flutter ablation.