Atrial flutter: from ECG to electroanatomical 3D mapping

Area of Science:

• Cardiology
• Electrophysiology
• Medical Diagnostics

Background:

• Atrial flutter is a prevalent arrhythmia causing symptoms like palpitations and syncope.
• Traditional diagnosis relies on 12-lead electrocardiograms (ECG) identifying characteristic flutter waves.
• Previous classifications, like the Puech and Waldo system, were limited.

Purpose of the Study:

• To present an updated classification and nomenclature for atrial flutter.
• To move beyond descriptive terms towards a mechanism-based classification.
• To improve clarity and reduce diagnostic confusion in atrial flutter.

Main Methods:

• Review of historical and current atrial flutter classifications.
• Incorporation of advancements in endocardial mapping, including 3D electroanatomical systems.
• Development of new terminology based on electrophysiological mechanisms.

Main Results:

• Established a new classification system for atrial flutter.
• Replaced ambiguous terms (e.g., typical, atypical) with mechanism-specific descriptions.
• Emphasized electrophysiological mechanisms as the sole basis for classification.

Conclusions:

• The updated classification provides a more accurate and less confusing approach to atrial flutter.
• Understanding the electrophysiological mechanism is key to precise atrial flutter diagnosis.
• This revised terminology facilitates better communication and research in cardiac electrophysiology.