| US 7,542,794 B1 | ||
| Method of extracting and evaluating paced heart beats using max-min transform analysis | ||
| Hongxuan Zhang, Hi-Nella, N.J. (US); Ananth Natarajan, San Marino, Calif. (US); and Nitish V. Thakor, Clarksville, Md. (US) | ||
| Assigned to Infinite Biomedical Technologies, LLC, Baltimore, Md. (US) | ||
| Filed on May 24, 2006, as Appl. No. 11/439,900. | ||
| Claims priority of provisional application 60/683857, filed on May 24, 2005. | ||
| Int. Cl. A61B 5/04 (2006.01) | ||
| U.S. Cl. 600—509 [600/510; 607/27] | 6 Claims |
| 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 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.
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