METHODS, SYSTEMS, AND APPARATUS FOR IDENTIFICATION AND CHARACTERIZATION OF ROTORS ASSOCIATED WITH ATRIAL FIBRILLATION

摘要

A system can include a near-field instrument to be placed inside a chamber of a heart, a far-field instrument to be placed in a stable position in relation to the heart, and a control unit. The control unit is configured to identify a unique pattern in electrogram information received from the far-field instrument when the near-field instrument is in one or more positions within the heart. When the unique pattern is detected, the control unit is configured to receive electrogram information from the near-field instrument. While recording electrogram information from the near-field instrument, the control unit is also configured to record voltage and complex fractionated atrial electrogram (CFAE) characteristics of the tissue inside a heart chamber. This information combined with rotor information can be used to identify substrate versus non-substrate rotor characteristics.

主权项

1. A system, comprising:
a first instrument having a first plurality of electrodes, the first instrument configured to be placed inside a chamber of a heart; a second instrument having a second plurality of electrodes, the second instrument configured to be placed in a stable position in relation to the heart; a control unit configured to (1) receive first position coordinates of the first instrument, (2) receive first far-field electrogram information from the second instrument, (3) receive first near-field electrogram information from the first instrument when a far-field electrogram pattern is detected in the first far-field electrogram information, (4) store the first position coordinates of the first instrument, the far-field electrogram pattern, and the first near-field electrogram information from the first instrument, (5) receive second position coordinates of the first instrument, (6) receive second far-field electrogram information from the second instrument, (7) receive second near-field electrogram information from the first instrument when the far-field electrogram pattern is detected in the second far-field electrogram information, and (8) store the second position coordinates of the first instrument, the far-field electrogram pattern, and the second near-field electrogram information from the first instrument.