Real-Time Rotational Activity Detection in Atrial Fibrillation.

ABSTRACT: Rotational activations, or spiral waves, are one of the proposed mechanisms for atrial fibrillation (AF) maintenance. We present a system for assessing the presence of rotational activity from intracardiac electrograms (EGMs). Our system is able to operate in real-time with multi-electrode catheters of different topologies in contact with the atrial wall, and it is based on new local activation time (LAT) estimation and rotational activity detection methods. The EGM LAT estimation method is based on the identification of the highest sustained negative slope of unipolar signals. The method is implemented as a linear filter whose output is interpolated on a regular grid to match any catheter topology. Its operation is illustrated on selected signals and compared to the classical Hilbert-Tran

SUBMITTER: Rios-Munoz GR 

PROVIDER: S-EPMC5859379 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature