Patent ID: 9662178
Date: 2017-05-30
CPC Classifications: A61B

Claim:
1. A method for determining a location of a conduction block of a heart, the method comprising: obtaining data for electrograms recorded at various locations of the heart while programmed ventricular pacing with extra stimuli was performed; identifying sharp near-field potentials beyond a QRS complex for both a base train and the extra stimuli for at least two of the recorded electrograms; obtaining decrement values for at least two different locations of the heart where the decrement value for a given location of the heart is obtained by subtracting a time delay of the sharp near-field potential in response to the base train from a time delay of the sharp near-field potential in response to the extra stimuli in the recorded electrograms corresponding to the given location of the heart; generating at least a portion of a decrement map using the decrement values obtained for the different locations of the heart; and identifying the location of the conduction block based on electrograms having significant decremental properties by comparing the decrement values obtained for the different locations of the heart with other decrement values or a threshold.