Atrial Fibrillation
AF is characterized by disorganized atrial electrical activation and complex sustaining mechanisms. Pulmonary veins are important triggers in many patients.
1. What might the surface ECG tell us?
The surface rhythm is irregularly irregular with absent organized P waves in typical AF.
2. What might we see intracardially?
Intracardiac recordings show rapid, variable atrial activity; modern procedures integrate signals with 3D anatomy.
Technologist mindset
Describe the sequence before naming the mechanism. Ask what is earliest, what follows, whether atrial and ventricular activation are linked, and whether the pattern changes with pacing.
3. Pacing clues
The procedural strategy is not based on a single diagnostic pacing maneuver; pacing may be used for other procedural assessments.
4. Mapping concept
Contemporary AF ablation centers on pulmonary vein isolation, with additional strategies individualized to patient and procedure.
5. Ablation concept
The core ablation concept is durable electrical isolation of the pulmonary veins; technologies include thermal energy and pulsed field ablation.
Quick knowledge check
What is the best learning sequence for AF?
Professional reference
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Founder-authored educational summary. External expert review is not implied unless specifically stated.