Non-invasive Spatial Mapping of Frequencies in Atrial Fibrillation: Correlation With Contact Mapping

Mapping of atrial fibrillation.

Cardiac mapping has been defined as: "a method by which cardiac signals are recorded from multiple sites of the heart and spatially depicted as a function of time in an integrated manner". It requires determination of the local activation time at each electrode and the creation of activation maps which provide a spatial model of the activation sequence. With respect to atrial fibrillation, mapp...

In vivo contact force analysis and correlation with tissue impedance during left atrial mapping and catheter ablation of atrial fibrillation.

BACKGROUND The aim of this study was to evaluate in vivo contact force (CF) and the correlation of CF with impedance during left atrial 3-dimensional electroanatomical mapping and ablation. METHODS AND RESULTS CF during point-by-point left atrial mapping was assessed in 30 patients undergoing atrial fibrillation ablation. Operators were blinded to the real-time CF data. Data were analyzed acc...

Mapping Atrial Fibrillation: 2015 Update.

Atrial fibrillation requires a trigger that initiates the arrhythmia and substrate that favors perpetuation. Cardiac mapping is necessary to locate triggers and substrate so that an ablation strategy can be optimized. The most commonly used cardiac mapping approach is isochronal or activation mapping, which aims to create a spatial model of electrical wavefront propagation. Historically, activa...

Mapping the Conversion of Atrial Flutter to Atrial Fibrillation and Atrial Fibrillation

It is not generally believed that there is a relation between atrial flutter, thought to be due to a single reentrant circuit, and atrial fibrillation, thought to be due to simultaneously circulating multiple-reentrant wave fronts. However, there are many reasons to suggest that these rhythms are more closely related than previously thought. To test the hypothesis that the length of an area of ...

Electroanatomic mapping of the intercaval bundle in atrial fibrillation.