Surgery – Diagnostic testing – Cardiovascular
Patent
1997-08-07
1999-09-21
Kamm, William E.
Surgery
Diagnostic testing
Cardiovascular
A61B 5046
Patent
active
059546646
ABSTRACT:
A system and method for analyzing experimentally obtained electrocardiograph ECG data, which allows accurate catagorization of subjects into various abnormal and normal classifications, and which allows acurate tracking of subject cardiac status change, is disclosed. The method applies an algorithm which compares representative parameter, (eg. root-mean-square RMS mean), values derived from analysis of a representative composite of selected portions of a number of ECG PQRST waveforms obtained from ECG investigation of a subject, to similarly derived representative parameter, (eg. RMS mean and RMS standard deviation), values present in a compiled data bank derived from ECG investigation of numerous normals, (or initial subject data), in each of a plurality of frequency range bands. A highly diagnostic numerical "Score" is calculated by addition of "Score" components found to be acceptable under certain mathematical criteria, and provided by the algorithm. Visually interpretable power spectral density plots supplement the method. In addition, comparison of the calculated "Score" to subject cardiac ejection fraction provides indication of risk for sudden death. The present invention is directly adapted to tracking subject cardiac status change by substituting a baseline subject data set for the normal population data set.
REFERENCES:
patent: 4667682 (1987-05-01), Ihlenfeld, III
patent: 4680708 (1987-07-01), Ambor et al.
patent: 5020540 (1991-06-01), Chamoun
patent: 5025794 (1991-06-01), Albert et al.
patent: 5027824 (1991-07-01), Dougherty et al.
patent: 5077667 (1991-12-01), Brown et al.
patent: 5092341 (1992-03-01), Helen
patent: 5215099 (1993-06-01), Heberl et al.
patent: 5257621 (1993-11-01), Bardy et al.
patent: 5509425 (1996-04-01), Feng
Perioperative Cardiac Morbidity; Concepts and Cortroverrier, Mangana.
High Frequency QRS Electrocardiography in the Detection--Clin. Cardio 17, 175, 182 (1994) Aversano et al.
Phare and Group-Delay Characteristics of Signal-Averaged--Arthur et al., IEEE Transactions on Biomed Eng. vol. 42, No. 1, (1995).
Prognosis and Management After a First Mycardial Infarction, Moss et al., New England J. Medicine, vol. 322, No. 11, Mar. 15, 1990.
The Meaning and Use of the Area Under a Receiver Operating--Hanely et al., Diagnostic Radiology, vol. 143, No. 1, (Apr. 1982).
Predictive Valve of a Single Diagnostic Test in Unselected Populations, Uecchio et al., vol. 274, No. 21, New England J. Med. May 1996.
Analysis of Abnormal Signals Within the QRS Complex of the High--Gomis et al., Transaction on Biomedical Engineering, vol. 44, No. 8, Aug. 1997.
Kamm William E.
Welch James D.
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