Method and apparatus for measuring myocardial impairment, dysfunctions, sufficiency, and insufficiency
First Claim
1. A cardiac diagnostic and monitoring device for an individual including the combination of:
- means for obtaining data representative of end-systolic size, end-diastolic size, ventricular systolic blood pressure, and ventricular end diastolic blood pressure;
means responsive to said means for obtaining data for generating electrical signals representative of cardiac ventricular sizes and ventricular pressures of said individual;
means responsive to said electrical signals for producing ventricular pressure-size curves;
means for pre-establishing ventricular pressure-size curves according to a pre-determined reference; and
display means for said ventricular pressure-size curves to allow comparison with said pre-established curves of a pre-determined reference to allow diagnostic monitoring of the individual.
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Abstract
A monitoring device for cardiac efficiency and cardiac sufficiency derived from pre-ejection and post-ejection potentials, cardiac metabolic rate, and cardiac power receives signals representative of ventricular pressures and sizes, body temperature, age, and sex. Cardiac efficiency is determined as the ratio of the mechanical work of the heart performed in one cardiac cycle which is equal to the difference of pre-ejection potential and post-ejection potential to the highest pre-ejection potential. Metabolic rate is determined as a multiple of the minimum cardiac work necessary to sustain life. Cardiac power is determined as the ratio of cardiac work to the time in which this work is performed. Cardiac efficiency and cardiac power are used to determine myocardial impairment, dysfunctions, sufficiency, and insufficiency.
98 Citations
22 Claims
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1. A cardiac diagnostic and monitoring device for an individual including the combination of:
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means for obtaining data representative of end-systolic size, end-diastolic size, ventricular systolic blood pressure, and ventricular end diastolic blood pressure; means responsive to said means for obtaining data for generating electrical signals representative of cardiac ventricular sizes and ventricular pressures of said individual; means responsive to said electrical signals for producing ventricular pressure-size curves; means for pre-establishing ventricular pressure-size curves according to a pre-determined reference; and display means for said ventricular pressure-size curves to allow comparison with said pre-established curves of a pre-determined reference to allow diagnostic monitoring of the individual. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cardiac diagnostic and monitoring device for an individual including the combination of:
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means for producing and detecting signals representative of cardiac ventricular sizes and ventricular pressures of said individual; means responsive to said signals for generating energy level signals representing pre-ejection potentials and post-ejection potentials of said individual; means for pre-establishing energy levels of pre-ejection and post-ejection potentials of a pre-determined reference; and display means for said energy level signals representing pre-ejection and post-ejection potentials to allow comparison with said pre-established energy levels of pre-ejection and post-ejection potentials of a pre-determined reference to allow diagnosis and monitoring of the individual. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of diagnosing cardiac efficiency, metabolic rate and cardiac power comprising the steps of:
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providing an individual with detectors responsive to cardiac functions; generating cardiac ventricular pressure and size signals using said detectors to represent end-diastolic size, end-systolic size, end-diastolic pressure, systolic pressure, of the individual; using said signals to establish present curves and present pre-ejection and post-ejection potentials of the individual, determining the curve and an energy level of pre-ejection and post-ejection potentials with cardiac basal metabolic rate, and comparing the pressure-volume curves and the pre-ejection and post-ejection potentials of the individual with the respective curve and energy levels of the pre-ejection and post-ejection potentials of a pre-determined reference to assess cardiac efficiency. - View Dependent Claims (21, 22)
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Specification