title: Initial experience with a multielectrode catheter equipped with the single-axis sensor technology for high-density electroanatomical mapping in a swine model.
abstract: BACKGROUND
  magnetic-based electroanatomical mapping systems are widely used during catheter ablation. Currently, the size of the sensor incorporated in the catheter to allow its localization is large, prohibiting the placement of more than one sensor on any single catheter. As a result, multielectrode catheters cannot be tracked by the magnetic-based mapping systems. Single-axis sensors (SAS) are new generation sensors that are significantly smaller in size. The small size of these new sensors allows the placement of more than one sensor on each catheter, allowing the tracking of multielectrode catheters. The objective of this study is to test the feasibility of creating high-density magnetic electroanatomical maps using a new generation multielectrode catheter equipped with the SAS technology.
  
  
  RESULTS
  anatomical reconstruction of cardiac chambers and the aorta, together with activation mapping of the right atrium during both sinus rhythm and pacing-induced premature atrial contractions (PACs), were performed in 5 swine using both a conventional mapping catheter and the novel multielectrode catheter equipped with SAS. The multielectrode mapping provided a detailed definition of cardiac anatomy while requiring shorter acquisition times. In addition, mapping of PACs origin was significantly faster using the multielectrode catheter.
  
  
  CONCLUSIONS
  the novel multielectrode catheter equipped with the SAS technology can be used in combination with magnetic electroanatomical mapping systems to generate high-density anatomical reconstructions and activation maps.
authors.affiliation: Heart Center, Massachusetts General Hospital, Boston, Massachusetts 02214, USA.
authors.forename: Roy
authors.initials: R
authors.lastname: Beinart
authors.forename: Francesco
authors.initials: F
authors.lastname: Perna
authors.forename: Stephan
authors.initials: S
authors.lastname: Danik
authors.forename: Conor D
authors.initials: CD
authors.lastname: Barrett
authors.forename: E Kevin
authors.initials: EK
authors.lastname: Heist
authors.forename: Jeremy
authors.initials: J
authors.lastname: Ruskin
authors.forename: Moussa
authors.initials: M
authors.lastname: Mansour
mesh_terms: D000818:Animals; D016275:Atrial Function / Q000502:physiology; D018780:Body Surface Potential Mapping / Q000379:methods*; D017115:Catheter Ablation / Q000379:methods*; D004566:Electrodes; D006339:Heart Rate / Q000502:physiology; D023421:Models, Animal; D011827:Radiation; D013552:Swine