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. 2022 Jul;33(7):1405-1411.
doi: 10.1111/jce.15498. Epub 2022 Apr 28.

Grid-mapping catheters versus PentaRay catheters for left atrial mapping on ensite precision mapping system

Jumpei Saito  1 , Kennosuke Yamashita  2   3 , Takaki Numajiri  1 , Yuma Gibo  1 , Soichiro Usumoto  1 , Syuro Narui  1 , Tatsuki Fujioka  1 , Yu Asukai  1 , Wataru Igawa  1 , Morio Ono  1 , Seitaro Ebara  1 , Toshitaka Okabe  1 , Naoei Isomura  1 , Masahiko Ochiai  1
Affiliations

Grid-mapping catheters versus PentaRay catheters for left atrial mapping on ensite precision mapping system

Jumpei Saito et al. J Cardiovasc Electrophysiol. 2022 Jul.

Abstract

Introduction: Areas displaying reduced bipolar voltage are defined as low-voltage areas (LVAs). Moreover, left atrial (LA) LVAs after pulmonary vein isolation (PVI) have been reported as a predictor of recurrent atrial fibrillation (AF). In this study, we compared grid mapping catheter (GMC) with PentaRay catheter (PC) for LA voltage mapping on Ensite Precision mapping system.

Methods: Twenty-six consecutive patients with LVAs and border zone within the LA were enrolled. After achieving PVI, voltage mapping under high right atrial pacing for 600 ms was performed twice using each catheter type (GMC first, PC next). Furthermore, LVA was defined as a region with a bipolar voltage of <0.50, and border zone was defined as a region with a bipolar voltage of <1.0, or <1.5 mV.

Results: Compared with PC, using GMC, voltage mapping contained more mapping points (20 242 [15 859, 26 013] vs. 5589 [4088, 7649]; p < .0001), and more mapping points per minute(1428 [1275, 1803] vs. 558 [372, 783]; p < .0001). In addition, LVA and border zone size using GMC was significantly less than that reported using PC: <1.0 mV (5.9 cm2 [2.9, 20.2] vs. 13.9 cm2 [6.3, 24.1], p = .018) and <1.5 mV voltage cutoff (10.6 cm2 [6.6, 27.2] vs. 21.6 cm2 [12.6, 35.0], p = .005).

Conclusion: Bipolar voltage amplitude estimated by GMC was significantly larger than that estimated by PC on Ensite Precision mapping system. GMC may be able to find highly selective identification of LVAs with lower prevalence and smaller LVA and border zone size.

Keywords: arrythmia; atrial fibrillation; catheter ablation; left atrium; low voltage areas; pulmonary vein isolation; voltage mapping.

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References

REFERENCES

    1. Zhou Q, Maleck C, von Ungern-Sternberg SNI, et al. Circulating MicroRNA-21 correlates with left atrial low-voltage areas and is associated with procedure outcome in patients undergoing atrial fibrillation ablation. Circ Arrhythm Electrophysiol. 2018;11:e006242.
    1. Kawai S, Mukai Y, Inoue S, et al. Non-pulmonary vein triggers of atrial fibrillation are likely to arise from low-voltage areas in the left atrium. Sci Rep. 2019;9:12271.
    1. Ahmed-Jushuf F, Murgatroyd F, Dhillon P, Scott PA. The impact of the presence of left atrial low voltage areas on outcomes from pulmonary vein isolation. J Arrhythm. 2019;35:205-214.
    1. Kuo L, Zado E, Frankel D, et al. Association of left atrial high-resolution late Gadolinium enhancement on cardiac magnetic resonance with electrogram abnormalities beyond voltage in patients with atrial fibrillation. Circ Arrhythm Electrophysiol. 2020;13:e007586.
    1. Yamashita K, Silvernagel J, Kwan E, et al. Changes in atrial electrophysiological and structural substrate and their relationship to histology in a long-term chronic canine atrial fibrillation model. Pacing Clin Electrophysiol. 2019;42:930-936.

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