Systems and methods for acquiring endocardially or epicardially

Details Systems and methods for acquiring endocardially or epicardially Systems and methods for acquiring endocardially or epicardially

1995-02-17

1998-01-27

Jastrzab, Jeffrey R.

Surgery

Truss

Pad

A61B 50402, A61N 136

Patent

active

057113050

ABSTRACT:
Systems and methods acquire electrocardiograms using a first electrode associated with a region of heart tissue and a second body surface electrode. An analog or digital processing element is coupled to the first and second electrodes for conditioning the first electrode to emit a pacing signal and for conditioning the second electrode to sense paced electrocardiograms occurring as a result of the pacing signal. The systems and methods also employ a template of an electrocardiogram of a cardiac event of known diagnosis; for example an arrhythmia that the physician seeks to treat. This event-specific template comprises a plot of biopotentials over time and not a spacial distribution of endocardial surface activation. The systems and methods compare this event-specific template to a sample of a paced electrocardiogram. The paced electrocardiogram sample comprises a plot of biopotentials over time and not a spacial distribution of endocardial surface activation. The comparison yields a matching coefficient indicating how alike the input sample is to the input template. The matching coefficient can be used by the physician, for example, to aid in the location of sites that are potentially appropriate for ablation.

REFERENCES:
patent: 4105023 (1978-08-01), Marchese et al.
patent: 4149527 (1979-04-01), Naylor et al.
patent: 4244376 (1981-01-01), Fisher et al.
patent: 4674509 (1987-06-01), DeCote, Jr.
patent: 4723553 (1988-02-01), Miwa et al.
patent: 4793361 (1988-12-01), DuFault
patent: 4868773 (1989-09-01), Coyle et al.
patent: 5010888 (1991-04-01), Jadvar et al.
patent: 5029118 (1991-07-01), Nakajima et al.
patent: 5168459 (1992-12-01), Hiller
patent: 5238000 (1993-08-01), Niwa
patent: 5267567 (1993-12-01), Aung et al.
patent: 5273049 (1993-12-01), Steinhaus et al.
patent: 5311873 (1994-05-01), Savard et al.
patent: 5311874 (1994-05-01), Baumann et al.
patent: 5323781 (1994-06-01), Ideker et al.
patent: 5324284 (1994-06-01), Imran
patent: 5391199 (1995-02-01), Ben-Haim
patent: 5405375 (1995-04-01), Ayers et al.
patent: 5409000 (1995-04-01), Imran
patent: 5409007 (1995-04-01), Saunders et al.
patent: 5411025 (1995-05-01), Webster, Jr.
patent: 5413105 (1995-05-01), Forestieri
patent: 5415166 (1995-05-01), Imran
patent: 5436564 (1995-07-01), Kreger et al.
patent: 5447519 (1995-09-01), Peterson
patent: 5450846 (1995-09-01), Goldreyer
patent: 5454370 (1995-10-01), Avitall
patent: 5476495 (1995-12-01), Kordis et al.
patent: 5485849 (1996-01-01), Panescu et al.
patent: 5487391 (1996-01-01), Panescu
Orthogonal Electrode Catheter Array for Mapping of Endocardial Focal Site of Ventricular Activation, Desai, J.M. et al., Pace vol. 14 pp. 557-576. Apr. 1991, Part 1.
Other Time and Frequency Domain Techniques, Panescu, Dorin, Biomedical Digital Signal Processing, Prentice Hall pp.216-228, 1993.
A Fast Pipelined Cordic-Based Adaptive Lattice Filter, Swanson et al., The American Journal of Cardiology vol. 71, Apr. 1, 1993.
Anisotropic Reentry, Wit et al., Cardiac Mapping, Futura Publishing Co., pp. 127-154 (1993).
Reentrant and Nonreentrant Mechanisms Contribute to Arhythmogenesis During Early Myocardial Ischemia: Results Using Three-Dimensional Mapping, Pogwizd et al., Circulation Research vol. 61 No. 3, Sep. 1987.
Identification of Reentry Circuit Sites During Catheter Mapping and Radiofrequency Ablation of Ventricular Tachycardia Late After Myocardial Infarction, Stevenson et al., Circulation, Vo. 88 No. 4 Part 1, Oct. 1993 pp. 647-669.
Digital Signal Processing Chip Implementation for Detection andAnalysis of Intracardiac Electrograms, Chiang et al., Pace vol. 17, Aug. 1994, pp. 1373-1379.
Induction of ventricular tachycardia during programmed electrical stimulation: analysis of pacing methods, Prystowsky et al., Circulation, vol. 73 (supp II) Feb. 1986, pp. II-32-II-38.
Catheter Ablation of Ventricular Tachycardia, Morady, Tachycardias: Mechanisms and Management, pp. 537-556 (1993).
Endocardial Actrivation Mapping and Endocardial Pace-Mapping Using a Balloon Apparatus, Fann et al/, The American Journal of Cardiology vol. 55, Apr. 1, 1985 pp. 1076-1083.
Demonstration of the presence of slow conduction during sustained ventricular tachycardia in man: use of transient entrainment of the tachycardia, Okumura et al., Circulation 75, No. 2, pp. 369-378. 1987.
Entrainment of ventricular tachycardia: explanation for surface electrocardiographic phenomena by analysis of electrograms recorded within the tachycardia circuit, Almendral et al. Circulation 77, No. 3 pp. 569-580, 1988.
Radiofrequency Catheter Ablation ofVentricular Tachycardia inPatient with Coronary Artery Disease, Morady et al., Circulation vol. 87 No. 2 Feb. 1993, pp. 363-372.
Adaptive Noise Cancelling: Principles and Applications, Widrow et al., Proceedings of the IEEE, Dec. 1975 pp. 1692-1710.
A Morphological Method for Separation ofVentricular Tachycardia from Ventricular Fibrillation on Intracardiac Electrograms, Jenkins et al., Annual International Conference to the I EEE Engineering in Medicine and Biology Society vol. 13 No. 2 1991 p. 0742.
Correlation Template Analysis of Intracardiac Electrograms, Murphy et al, Annual International Conference of the IEEE Engineering in Medicine and Biology Societny vol. 13 No. 2 1991 pp. 0736-0737.
A Cyclostationary Least Mean Squares Algorithm for Discimination ofVentricular Tachycardia from Sinus Rhythm, Finelli et al., Annuyal International Conference of the IEEE Engineering in medicine and Biology Society, vol. 13 No. 2 1991 pp. 0740-0741.

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