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Case Reports
. 2020 Nov 15;11(11):4297-4300.
doi: 10.19102/icrm.2020.111103. eCollection 2020 Nov.

Atrioventricular Nodal Reentrant Tachycardia Ablation with a Power-controlled, Contact-force Catheter

Chase J Contino  1 , Max Weiss  1 , Michael P Riley  2 , Daniel R Frisch  1
Affiliations
Case Reports

Atrioventricular Nodal Reentrant Tachycardia Ablation with a Power-controlled, Contact-force Catheter

Chase J Contino et al. J Innov Card Rhythm Manag. .

Abstract

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.

Keywords: Atrioventricular nodal reentrant tachycardia; electrogram; radiofrequency catheter ablation.

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Conflict of interest statement

Dr. Frisch has received speaking honoraria from St. Jude Medical/Abbott Laboratories, outside the scope of this manuscript. The other authors report no conflicts of interest for the published content.

Figures

Figure 1:
Figure 1:
Atrial extra-stimulus causing an AH “jump” that initiated a narrow-complex, short R–P, A-on-V tachycardia consistent with AVNRT.
Figure 2:
Figure 2:
Ablation sites. The green, yellow, and red lines represent impedance, power, and temperature, respectively. A: Blue markers: temperature-controlled mode without junctional rhythm. B: Orange markers: temperature-controlled mode with junctional rhythm. C: White markers: power-controlled mode with junctional rhythm. CS: coronary sinus; IVC: inferior vena cava; SVC: superior vena cava.
See this image and copyright information in PMC

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