System and related methods for identifying a fibrillation driver
First Claim
1. A system that is configured to approximate a location of a fibrillation driver within a heart, the system comprising:
- a. a plurality of electrodes configured to sense, at each of a respective location in the heart, a signal comprising a plurality of cardiac cycles each having a corresponding cardiac cycle length; and
b. a computer that is coupled to the electrodes and configured to;
calculate, for each of a plurality of the locations, a plurality of cardiac cycle length values for the signal sensed at the location and a standard deviation of the plurality of calculated cardiac cycle length values for the signal sensed at the location using only the plurality of calculated cardiac cycle length values calculated for that location,directly compare each of the respective calculated standard deviations to each of the other respective calculated standard deviations to determine the smallest standard deviation, andidentify the location with the smallest standard deviation of cardiac cycle length values as the location closest to the fibrillation driver.
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Abstract
A system and related methods for assisting a user approximate the location of a fibrillation driver within a heart. The system includes an electrode and a computer, which is coupled to the electrode. The electrode is configured to sense a signal emitted from a location in the heart. The computer is configured to calculate a standard deviation of cycle length value for the signal. The user can approximate the location of the fibrillation driver based on a comparison of the standard deviation of cycle length value to other standard deviation of cycle length values that previously have been calculated by the computer for signals emitted from other locations in the heart.
65 Citations
14 Claims
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1. A system that is configured to approximate a location of a fibrillation driver within a heart, the system comprising:
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a. a plurality of electrodes configured to sense, at each of a respective location in the heart, a signal comprising a plurality of cardiac cycles each having a corresponding cardiac cycle length; and b. a computer that is coupled to the electrodes and configured to; calculate, for each of a plurality of the locations, a plurality of cardiac cycle length values for the signal sensed at the location and a standard deviation of the plurality of calculated cardiac cycle length values for the signal sensed at the location using only the plurality of calculated cardiac cycle length values calculated for that location, directly compare each of the respective calculated standard deviations to each of the other respective calculated standard deviations to determine the smallest standard deviation, and identify the location with the smallest standard deviation of cardiac cycle length values as the location closest to the fibrillation driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for determining an approximate location of a fibrillation driver within a heart using a plurality of electrodes that are coupled to a computer, the method comprising:
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a. using the electrodes to sense, at each of a respective location in the heart, a signal comprising a plurality of cardiac cycles each having a corresponding cardiac cycle length; b. communicating the signals from the electrodes to the computer; c. using the computer to calculate, for each of a plurality of the locations, a plurality of cardiac cycle length values for the signal sensed at the location and a standard deviation of the plurality of calculated cardiac cycle length values for the signal sensed at the location using only the plurality of calculated cardiac cycle length values calculated for that location; d. directly comparing each of the respective calculated standard deviations to each of the other respective calculated standard deviations to determine the smallest standard deviation; and e. identifying the location with the smallest standard deviation of cardiac cycle length values as the approximate location of the fibrillation driver within the heart. - View Dependent Claims (10, 11, 12, 13)
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14. A system for determining an approximate location of a fibrillation driver within a heart, the system comprising:
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a. means for sensing, at each of a respective location in the heart, a signal comprising a plurality of cardiac cycles each having a corresponding cardiac cycle length; b. means for calculating, for each of a plurality of the locations, a plurality of cardiac cycle length values for the signal sensed at the location and a standard deviation of the plurality of calculated cardiac cycle length values for the signal sensed at the location using only the plurality of calculated cardiac cycle length values calculated for that location; c. means for directly comparing each of the respective calculated standard deviations to each of the other respective calculated standard deviations to determine the smallest standard deviation; and d. means identifying the location with the smallest standard deviation of cardiac cycle length values as the approximate location of the fibrillation driver within the heart.
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Specification