Method and apparatus for determining susceptibility for...

Surgery – Diagnostic testing – Cardiovascular

Reexamination Certificate

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Reexamination Certificate

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08041416

ABSTRACT:
A method of assessing a patient's susceptibility to ventricular arrhythmia obtaining data by applying electrodes to detect electrocardiographic signal. A plurality of synchronized subthreshold electrical stimuli are delivered into the patient's body to present stimulated cardiac cycles to the electrodes and unstimulated reference cardiac cycles to the electrodes the signals are analyzed by creating a matrix of vectorized time-phase data representing a plurality cardiac cycles contained in the electrocardiographic signals that are recorded the method includes processing the matrix to generate spectral analytic representation of the matrix, analyzing at least the spectral analytic representation to determine at least one alternans index for the patient; and displaying the at least one alternans index as an indicator of the patient's susceptibility to arrhythmia.

REFERENCES:
patent: 3805795 (1974-04-01), Denniston et al.
patent: 4522194 (1985-06-01), Normann
patent: 4802491 (1989-02-01), Cohen et al.
patent: 4969467 (1990-11-01), Callaghan et al.
patent: 5117834 (1992-06-01), Kroll et al.
patent: 5351687 (1994-10-01), Kroll et al.
patent: 5487391 (1996-01-01), Panescu
patent: 5555888 (1996-09-01), Brewer et al.
patent: 5694943 (1997-12-01), Brewer et al.
patent: 5704365 (1998-01-01), Albrecht et al.
patent: 5713367 (1998-02-01), Arnold et al.
patent: 5716380 (1998-02-01), Yerkovich et al.
patent: 5735883 (1998-04-01), Paul et al.
patent: 5759158 (1998-06-01), Swanson
patent: 5817130 (1998-10-01), Cox et al.
patent: 5951484 (1999-09-01), Hoium et al.
patent: 6129678 (2000-10-01), Ryan et al.
patent: 6445947 (2002-09-01), Hoium et al.
patent: 6512945 (2003-01-01), Hoium et al.
patent: 6625483 (2003-09-01), Hoium et al.
patent: 6850795 (2005-02-01), Hoium et al.
patent: 7016731 (2006-03-01), Ryan et al.
patent: 7123954 (2006-10-01), Narayan et al.
patent: 7171265 (2007-01-01), Hoium et al.
patent: 7292886 (2007-11-01), Kroll
patent: 2007/0123787 (2007-05-01), Kitajima et al.
patent: 2 301 037 (1996-11-01), None
patent: WO 99/05964 (1999-02-01), None
Medical and Biological Engineering & Computing 2002, vol. 40; Non-Invasive Wedensky Modulation Within the QRS Complex; Knathkova et al. pp. 234-240.
IEEE Transaction of Biomedical Engineering; vol. 52, No. 4, Apr. 2005; Methodological Principles of T Wave Alternans Analysis: A Unified Framework; Juan Pablo Martinez et al.; pp. 599-613.
Journal of Cardiovascular Electrophysiology; vol. 13, No. 5, May 2002; Interpretation and Classification of Microvolt T Wave Alternans Tests; Daniel M. Bloomfield M.D. et al.; pp. 6502-6512.
Journal of the American College of Cardiology; vol. 47, No. 2, 2006; T-Wave Alternans and the Susceptibility to Ventricular Arrhythmias; Sanjiv M. Narayan; pp. 269-281.
J. Appl. Physiol 92: 541-549; 2002; Modified Moving Average Analysis of T-Wave Alternans to Predict Ventricular Fibrillation With High Accuracy. Bruce D. Nearing et al; pp. 541-549.
Institute of Physics Publishing; Physiological Measurement; Physio. Meas. 26 (2005) R155-R199; Topical Review; Wavelet Transforms and the ECG: A Review; Paul S Addison; pp. R155-R199.
Physiol. Meas. 19 (1998) 77-92; Beat -to- Beat Wavelet Variance of the QRS Complex as a Marker of Arrhythmogenic Substrate in Ventricular Tachycardia Patients; M. Popescu et al.; pp. 77-92.
Article of Computers in Cardiology; Dated 1998; vol. 25; High Resolution ECG Filtering Using Adaptive Bayesian Wavelet Shrinkage; pp. 401-404.
Written Opinion of the International Searching Authority of PCT/US/2008/076856; Apr. 2007. Two pages.

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