Cardiac resynchronization therapy optimization using vector measurements obtained from realtime electrode position tracking

A method comprising:

• selecting, through a user interface, a pair of electrodes located in a patient;
• establishing an electrical localization field in the patient;
• acquiring, using a processor, position information during one or more cardiac cycles for the pair of electrodes wherein the acquiring comprises using each of the electrodes for measuring one or more electrical potentials in the electrical localization field established in the patient;
• calculating, using a processor, one or more vector metrics based on the acquired position information for a vector defined by the pair of electrodes;
• analyzing, using a processor, the one or more vector metrics to determine a measure indicative of cardiac performance during the one or more cardiac cycles;
• and
• presenting, through a user interface, an indication of the measure;
• wherein the one or more vector metrics comprises a slope of a vector length with respect to time wherein the slope provides an indication of cardiac contractility.

A method comprising:

• selecting, through a user interface, a pair of electrodes located in a patient;
• establishing an electrical localization field in the patient;
• acquiring, using a processor, position information during one or more cardiac cycles for the pair of electrodes wherein the acquiring comprises using each of the electrodes for measuring one or more electrical potentials in the electrical localization field established in the patient;
• calculating, using a processor, one or more vector metrics based on the acquired position information for a vector defined by the pair of electrodes;
• analyzing, using a processor, the one or more vector metrics to determine a measure indicative of cardiac performance during the one or more cardiac cycles;
• presenting, through a user interface, an indication of the measure;
• and
• selecting, through a user interface, a third electrode and defining a triangle based on the three electrodes;
• wherein the third electrode comprises an electrode located in the right atrium.

A method comprising:

• positioning a first electrode in a patient at an RV cardiac location;
• positioning a second electrode in the patient at an LV cardiac location, wherein the first electrode moves relative to the second electrode during cardiac cycles of the patient;
• establishing an electrical localization field in the patient;
• acquiring, using a processor, position information during one or more cardiac cycles for the first and second electrodes, wherein the acquiring comprises using each of the first and second electrodes for measuring one or more electrical potentials in the electrical localization field established in the patient;
• calculating, using a processor, a set of vectors based on the acquired position information defined by the first and second electrodes, wherein the set of vectors represents movement of the first electrode relative to the second electrode over at least a portion of one or more cardiac cycles;
• analyzing, using a processor, the set of vectors to determine a measure indicative of cardiac performance during the one or more cardiac cycles;
• and
• presenting, through a user interface, an indication of the measure;
• wherein the analyzing comprises:
• generating a first time domain representation of vector angle for respective vectors in the set of vectors;
• generating a second time domain representation of vector magnitude for respective vectors in the set of vectors;
• comparing timing of maximum and minimum values in the first and second time domain representations.