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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Caswell, S.A. Thompson, J.A. Jenkins, J.M. DiCarlo, L.A. |
| Copyright Year | 1996 |
| Description | Author affiliation: Michigan Univ., Ann Arbor, MI, USA (Caswell, S.A.) |
| Abstract | In third-generation implantable antitachycardia devices, immediate defibrillation is necessary for ventricular fibrillation (VF) while lower-energy therapies convert many ventricular tachycardias (VTs). Precise distinction between true VF and VT is required if tiered-therapy is to be effectively utilized. To separate VF from VT, this study employed a measurement to quantify the coherence between two unipolar electrograms from the same catheter, where incoherence between signals indicates VF. A normalized cross correlation (CC) measured similarity, and standard deviation (STD) and interquartile range (IQR) of the CC measured consistency for sinus rhythm (SR), VT, and VF passages from 10 patients. Patient-independent STD thresholds of 0.15-0.25 and IQR thresholds of 0.3-0.6 provided 100% sensitivity and 100% specificity. This method was able to successfully separate VF from coherent rhythms (SR,VT). Proper distinction of VT would allow defibrillation to be deferred for consideration of lower energy therapies, providing significant energy savings. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 434505 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780337107 |
| ISSN | 02766547 |
| DOI | 10.1109/CIC.1996.542458 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1996-09-08 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Fibrillation Defibrillation Medical treatment Rhythm Strontium Cardiology Fault detection Linearity Speech synthesis Catheters |
| Content Type | Text |
| Resource Type | Article |
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