Methods, systems, and apparatus for identification and characterization of rotors associated with atrial fibrillation

A system comprising:

• a far-field instrument configured to be placed in a stable position relative to a heart of a patient, the far-field instrument configured to measure far-field electrogram information;
• a compute device communicatively coupled to the far-field instrument and configured to identify a plurality of unique patterns in the far-field electrogram information, each unique pattern from the plurality of unique patterns associated with a phase of the heart;
• and
• a near-field instrument communicatively coupled to the compute device and configured to be disposed in a chamber of the heart, the near-field instrument configured to move from a first position within the chamber of the heart to a second position within the chamber of the heart,
• the compute device configured to:
• associate near-field electrogram information received from the near-field instrument when the near-field instrument is at the first position with a first phase from the plurality of phases;
• associate near-field electrogram information received from the near-field instrument when the near-field instrument is at the second position with the first phase;
• and
• assemble an electro-anatomical model of the first phase of the heart based on (i) the near-field electrogram information received when the near-field instrument is at the first position and (ii) the near-field electrogram information received when the near-field instrument is at the second position.