Ischemia detection using paced depolarization integral and intracardiac electrogram template comparison
US7647104B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2006 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36557
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for analyzing IEGM waveforms is disclosed. The method includes generating a long term ensemble average of a plurality of baseline IEGM waveforms and generating a short term ensemble average of at least a portion of the plurality of baseline IEGM waveforms. The method further includes determining a short term absolute point value as a function of the absolute value of the difference of the amplitude of the short term ensemble average and a test IEGM waveform and a long term absolute point value as a function of the difference of the amplitude of the long term ensemble average and the test waveform at a plurality of sample points. The disclosed method further includes detecting ischemia if the difference between the short term absolute point value and the long term absolute point value is greater than an ischemia detection threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.