Noninvasive hemodynamic analyzer alterable to a continuous invasive hemodynamic monitor
First Claim
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1. A computerized apparatus for electronically determining cardiac parameters in a human patient in the presence of a regular heart rate pattern, comprising:
- computing means for receiving and storing a set of input parameters including a single actual heart rate value, a single actual systolic blood pressure value and a single actual diastolic blood pressure value, and sex, weight, age and height of the patient;
calculating means associated with the computing means for generating an estimate of actual cardiac stroke volume from;
(a) said single heart rate value,(b) blood pressure information consisting only of said single systolic and diastolic blood pressure values, and(c) said sex, weight, age, and height of the patient; and
output means connected to the calculating means for providing an output to an operator representing said estimate of actual cardiac stroke volume.
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Abstract
A noninvasive method for calculating Actual Stroke Volume and Cardiac Output of a human heart uses computerized algorithms, and is implemented in a continuous noninvasive hemodynamic analyzer which computes a complete real-time Hemodynamic Profile with 12 parameters, in both rest and exercise modes. Inputs are received noninvasively by the analyzer, and a cascade of algorithms are used to calculate Stroke Volume, Ejection Fraction and Acceleration Index in Rest and Exercise. The analyzer displays or prints a summary in graphical form.
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Citations
16 Claims
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1. A computerized apparatus for electronically determining cardiac parameters in a human patient in the presence of a regular heart rate pattern, comprising:
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computing means for receiving and storing a set of input parameters including a single actual heart rate value, a single actual systolic blood pressure value and a single actual diastolic blood pressure value, and sex, weight, age and height of the patient; calculating means associated with the computing means for generating an estimate of actual cardiac stroke volume from; (a) said single heart rate value, (b) blood pressure information consisting only of said single systolic and diastolic blood pressure values, and (c) said sex, weight, age, and height of the patient; and output means connected to the calculating means for providing an output to an operator representing said estimate of actual cardiac stroke volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computerized apparatus for electronically determining cardiac parameters in a human patient in the presence of a regular heart rate pattern, comprising:
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computing means for receiving and storing a set of input parameters including a single actual heart rate value, single actual systolic and diastolic blood pressure values, and sex, weight, age and height of the patient, said computing means further comprising means for receiving and storing a hemoglobin value; calculating means associated with the computing means for generating an estimate of actual cardiac stroke volume from said single heart rate value, said single systolic and diastolic blood pressure values, and said sex, weight, age, and height of the patient, wherein said estimate of actual cardiac stroke volume is calculated based only on said single heart rate value, said single systolic and diastolic blood pressure values, said sex, weight, age, and height of the patient, and said hemoglobin value; and output means connected to the calculating means for providing an output to an operator representing said estimate of actual cardiac stroke volume.
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12. A computer program for electronically determining cardiac parameters in a human patient in the presence of a regular heart rate pattern, comprising a recording medium encoded with computer program codes, said codes defining:
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computing means for receiving and storing a set of input parameters including a single actual heart rate value, a single actual systolic blood pressure value and a single actual diastolic blood pressure value, and sex, weight, age and height of the patient; calculating means associated with the computing means for generating an estimate of actual cardiac stroke volume from; (a) said single heart rate value, (b) blood pressure information consisting only of said single systolic and diastolic blood pressure values, and (c) said sex, weight, age, and height of the patient; output means connected to the calculating means for providing an output to an operator representing said estimate of actual cardiac stroke volume; and display means associated with the calculating means for receiving output therefrom and generating a graphical hemodynamic profile output. - View Dependent Claims (13, 14, 15, 16)
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Specification