Method and system for measuring cardiac tissue health based on DV/DTMIN of a depolarization wave within a cardiac electrogram
AssigneeNeutrace Inc.
InventorRobert L. Lux
Life of this patent
Estimating the term…
Abstract
A method for determining cardiac tissue health based on a depolarization wave within an EGM is disclosed. The method includes computing a first derivative with respect to time (DV/DT) of the EGM, determining extrema for the first derivative, establishing a value DV/DTMIN based on the extrema and mapping the value DV/DTMIN to cardiac tissue.
Claims15
A method for determining cardiac tissue health based on a depolarization wave within an electrogram (EGM), comprising:
- measuring the EGM as a voltage signal using one or more catheters;
- computing a derivative signal as a first derivative of the EGM with respect to time (DV/DT);
- determining extrema for the derivative signal;
- establishing a value DV/DTMIN as a minimum value of the derivative signal, based on the extrema;
- and
- mapping the value DV/DTMIN to cardiac tissue.
A system for determining cardiac tissue health based on a depolarization wave within an electrogram (EGM), comprising:
- a signal acquisition module to measure the EGM as a voltage signal;
- one or more processors coupled to a memory programmed with executable instructions to:
- compute a derivative signal as a first derivative of the EGM with respect to time (DV/DT);
- determine extrema for the derivative signal;
- establish a value DV/DTMIN as a minimum value of the derivative signal, based on the extrema;
- map the value DV/DTMIN to cardiac tissue.
A non-transitory computer readable storage medium, having stored thereon, a set of computer-executable instructions that causes a computer to perform the method comprising:
- measuring an electrogram (EGM) as a voltage signal using one or more catheters;
- computing a derivative signal as a first derivative of the EGM with respect to time (DV/DT);
- determining extrema for the derivative signal;
- establishing a value DV/DTMIN as a minimum value of the derivative signal, based on the extrema;
- and
- mapping the value DV/DTMIN to cardiac tissue.
Dependencies are inferred from the claim text.