Key result
Power-controlled irrigated contact-force ablation eliminates AVNRT inducibility after nonirrigated catheter failure.
Why the study?
Nonirrigated catheters in temperature-controlled mode traditionally used for AVNRT ablation may create inadequate lesion depth for slow-pathway ablation in some patients.
Case Report (n=1)
No
An irrigated contact-force ablation catheter in power-controlled mode may be necessary for successful slow-pathway ablation in AVNRT when traditional nonirrigated catheters fail to create adequate lesions.
Answers are grounded in this paper and cite their sources.
May warrant trial of irrigated contact-force catheters after nonirrigated failure in AVNRT; hypothesis-generating and requires prospective validation.
Radiofrequency catheter ablation is a safe and effective treatment option for atrioventricular nodal reentrant tachycardia (AVNRT). A nonirrigated ablation catheter used in a temperature-controlled mode is traditionally used for AVNRT ablation due to the shallow lesion depth required for successful slow-pathway ablation. In this case, a nonirrigated ablation catheter established inadequate lesions to ablate the slow pathway successfully. The adoption of an irrigated contact-force ablation catheter used in a power-controlled mode was necessary to provide higher power and possibly create a deeper lesion to ablate the slow pathway successfully, thus eliminating AVNRT inducibility in this patient.
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Contino et al. (2020) conducted a case report in Atrioventricular nodal reentrant tachycardia (AVNRT) (n=1). Irrigated contact-force ablation catheter in power-controlled mode vs. Nonirrigated ablation catheter in temperature-controlled mode was evaluated on Elimination of AVNRT inducibility. An irrigated contact-force ablation catheter in a power-controlled mode successfully ablated the slow pathway and eliminated AVNRT inducibility after a nonirrigated catheter failed.
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