Surgery – Truss – Pad
Patent
1989-03-10
1990-09-25
Jaworski, Francis
Surgery
Truss
Pad
128704, A61B 504
Patent
active
049586416
ABSTRACT:
Improved ambulatory heart data monitoring and recording apparatus and method are described. The apparatus provides a power partitioning and management circuit that enables the extended, continuous ECG monitoring of an ambulatory patient's cardiovascular performance and selective recording of arrhythmic events that transpire during such extended monitoring, wherein the circuit supplies reduced, unregulated DC power to potentially volatile data storage circuit elements in the event of the failure of the primary DC power source. An improved method validates QRS complexes by determining, during a learning period, characteristic criteria of the individual patient's QRS waveform most representative of a valid QRS complex as opposed to motion or other artifacts, and thereafter uses such learned criteria in heart rate monitoring. In another improved method, the occurrence of an arrhythmic event is determined by monitoring not only the patient's average heart rate relative to predetermined physiological norms but also the rate of change of the average heart rate, thereby reducing the likelihood that the apparatus gives false positive indications of abnormality.
REFERENCES:
patent: 4437466 (1984-03-01), Saulson et al.
patent: 4667682 (1987-05-01), Ihlenfeld, III
patent: 4732158 (1988-03-01), Sedeh
Digby Dennis
Homayoun Habib
Instromedix, Inc.
Jaworski Francis
Manuel George
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