Precise Signals with a High-Density Grid Mapping Catheter Are Useful for an Entrainment Study.

Precise Signals with a High-Density Grid Mapping Catheter Are Useful for an Entrainment Study.
Int Heart J. 2020 Jul 18;:
Authors: Oikawa J, Fukaya H, Niwano S, Saito D, Sato T, Matsuura G, Arakawa Y, Shirakawa Y, Kobayashi S, Horiguchi A, Nishinarita R, Ishizue N, Kishihara J, Ako J
Abstract
Complex atrial tachycardias (ATs) after catheter ablation or a MAZE procedure is sometimes difficult to determine the circuits of the tachycardia. A high-density, grid-shapes mapping catheter has been launched, which can be useful for detecting the detail circuits of tachycardias on three-dimensional mapping systems. The signal quality is also important for performing electrophysiological studies (EPSs), such as entrainment mapping, to identify the circuit. This unique mapping catheter has 1 mm electrodes on 2.5 Fr shafts, which improve the signal quality. The high-quality intracardiac electrograms facilitate differentiating small critical potentials, which allows us to perform detailed entrainment mapping in targeted narrow areas. Here, we describe a patient with a perimetral AT with epi-endocardium breakthrough after a MAZE surgery and catheter ablation, which was treated successfully along with detailed entrainment mapping using the HD Grid. This catheter with high-quality signals could be a significant diagnostic tool for a classic EPS as well as for the construction of 3D mapping.
PMID: 32684601 [PubMed - as supplied by publisher]

Source: International Heart Journal - July 22, 2020 Category: Cardiology Tags: Int Heart J Source Type: research