Method of extracting and evaluating paced heart beats using max-min transform analysis
First Claim
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1. A method of analyzing paced heart beats, comprising:
- providing a paced ECG signal including at least one QRS depolarization region and at least one pacing spike;
analyzing the at least one QRS depolarization region and the at least one pacing spike using max-min transform analysis of the ECG signal; and
identifying a time position of the at least one pacing spike in the paced ECG signal based on the max-min transform analysis of the ECG signalwherein the max-min transform analysis of the ECG signal includes;
a first distance value between one of the at least one pacing spikes and an R-wave of the QRS depolarization region;
a second distance value between a Q-wave portion of the QRS depolarization region and the R-wave portion of the QRS depolarization region;
a third distance value between the R-wave portion of the QRS depolarization region and an S-wave portion of the QRS depolarization region; and
comparing the first distance value to the greater of the second and third distance values, and if the first distance value is smaller, then identifying the signal as a false paced heart beat.
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Abstract
Methods for identifying and extracting heart depolarization and repolarization in a paced heart. Certain methods also include identifying and analyzing particular features of at least one pacing spike and QRS waveform for heart beat characterization. These features may include signal changing speed and signal time interval (distance) of pacing spikes and QRS depolarization when pacing excitation is initialized.
29 Citations
6 Claims
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1. A method of analyzing paced heart beats, comprising:
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providing a paced ECG signal including at least one QRS depolarization region and at least one pacing spike; analyzing the at least one QRS depolarization region and the at least one pacing spike using max-min transform analysis of the ECG signal; and identifying a time position of the at least one pacing spike in the paced ECG signal based on the max-min transform analysis of the ECG signal wherein the max-min transform analysis of the ECG signal includes; a first distance value between one of the at least one pacing spikes and an R-wave of the QRS depolarization region; a second distance value between a Q-wave portion of the QRS depolarization region and the R-wave portion of the QRS depolarization region; a third distance value between the R-wave portion of the QRS depolarization region and an S-wave portion of the QRS depolarization region; and comparing the first distance value to the greater of the second and third distance values, and if the first distance value is smaller, then identifying the signal as a false paced heart beat. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification