Key result
In patients with an implanted pacemaker undergoing atrial flutter ablation, a single ablation electrode is sufficient to demonstrate cavotricuspid isthmus block if retrograde conduction is intact.
Why the study?
Can a single-catheter approach validate bidirectional CTI block in patients with an implanted pacemaker undergoing atrial flutter ablation?
Can a single-catheter approach validate bidirectional CTI block in patients with an implanted pacemaker undergoing atrial flutter ablation?
A single-catheter approach can effectively validate bidirectional CTI block during atrial flutter ablation in patients with an existing pacemaker, potentially reducing the need for multiple catheters and associated complications.
Answers are grounded in this paper and cite their sources.
May support single-electrode CTI block validation in paced patients with intact retrograde conduction; leaves open confirmation in prospective studies.
Tabled 1KEY TEACHING POINTS•Atrial flutter can be effectively cured by ablation and bidirectional block in the cavotricuspid isthmus (CTI), usually evaluated using 2 or more electrodes, is mandatory to confirm the effectiveness of ablation. However, a multi-catheter approach sometimes may not be possible, or may increase risk of procedure-related complications.•In patients with an already implanted pacemaker only 1 ablation electrode is enough to demonstrate the CTI block.•Intact retrograde conduction is mandatory to validate CTI block in the clockwise direction with the presented technique. Open table in a new tab
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Futyma et al. (2015) studied Atrial flutter. Single-catheter validation of bidirectional block vs. Multi-catheter approach was evaluated on Validation of cavotricuspid isthmus (CTI) block. In patients with an implanted pacemaker undergoing atrial flutter ablation, a single ablation electrode is sufficient to demonstrate cavotricuspid isthmus block if retrograde conduction is intact.
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