Successful Irrigated-Tip Catheter Ablation of Atrial Flutter Resistant to Conventional Radiofrequency Ablation
Key result
Irrigated-tip catheter ablation successfully achieved bidirectional isthmus block in 12 of 13 patients (92.3%) who had previously failed conventional radiofrequency ablation.
Why the study?
Does irrigated-tip catheter ablation improve the achievement of bidirectional isthmus block in patients with atrial flutter resistant to conventional radiofrequency ablation?
Study Design
Type
Observational (n=13)
Structured PICO
Does irrigated-tip catheter ablation improve the achievement of bidirectional isthmus block in patients with atrial flutter resistant to conventional radiofrequency ablation?
P
Population
13 patients with common atrial flutter who failed to achieve bidirectional block with conventional radiofrequency ablation of the cavotricuspid isthmus (>21 applications), out of an initial cohort of 170 referred patients.
I
Intervention
Irrigated-tip catheter ablation applied to identified gaps in the ablation line (moderate flow rate of 17 mL/min, temperature-controlled target 50 degrees C, power limit 50 W).
O
Outcome
Achievement of bidirectional isthmus blocksurrogate
Irrigated-tip catheter ablation is a safe and effective rescue strategy for achieving cavotricuspid isthmus block in patients with atrial flutter who fail conventional radiofrequency ablation.
Authors
Discussion
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Implication
May offer rescue option after failed conventional ablation in atrial flutter; leaves open need for prospective trials before wider adoption.
Cite This Study
Jaı̈s et al. (1998) conducted an observational in Atrial flutter resistant to conventional radiofrequency ablation (n=13). Irrigated-tip catheter ablation was evaluated on Bidirectional isthmus block. Irrigated-tip catheter ablation successfully achieved bidirectional isthmus block in 12 of 13 patients (92.3%) who had previously failed conventional radiofrequency ablation.