SYSTEM AND METHOD FOR DETERMINING STABILITY OF CARDIAC OUTPUT
First Claim
1. A PPG system configured to determine cardiac stability of a patient, the PPG system comprising:
- a PPG sensor configured to be secured to an anatomical portion of the patient, wherein the PPG sensor is configured to sense a physiological characteristic of the patient; and
a monitor operatively connected to the PPG sensor, the monitor receiving a PPG signal from the PPG sensor, the monitor comprising a cardiac stability analysis module configured to determine an amplitude variance of the PPG signal over a predetermined time period and configured to determine a pulse period variance of the PPG signal over the time period, the cardiac stability analysis module configured to determine cardiac stability as a function of the amplitude variance and the pulse period variance.
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Accused Products
Abstract
A PPG system for determining cardiac stability of a patient includes a PPG sensor configured to be secured to an anatomical portion of the patient, wherein the PPG sensor is configured to sense a physiological characteristic of the patient. The PPG system includes a monitor operatively connected to the PPG sensor. The monitor receives a PPG signal from the PPG sensor. The monitor includes a cardiac stability analysis module configured to determine an amplitude variance of the PPG signal over a predetermined time period and configured to determine a pulse period variance of the PPG signal over the time period. The cardiac stability analysis module is configured to determine cardiac stability as a function of the amplitude variance and the pulse period variance.
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Citations
20 Claims
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1. A PPG system configured to determine cardiac stability of a patient, the PPG system comprising:
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a PPG sensor configured to be secured to an anatomical portion of the patient, wherein the PPG sensor is configured to sense a physiological characteristic of the patient; and a monitor operatively connected to the PPG sensor, the monitor receiving a PPG signal from the PPG sensor, the monitor comprising a cardiac stability analysis module configured to determine an amplitude variance of the PPG signal over a predetermined time period and configured to determine a pulse period variance of the PPG signal over the time period, the cardiac stability analysis module configured to determine cardiac stability as a function of the amplitude variance and the pulse period variance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of determining cardiac stability of a patient from a PPG system, the method comprising:
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securing a PPG sensor to an anatomical portion of the patient; sensing a physiological characteristic of the patient with the PPG sensor; receiving a PPG signal from the sensor at a monitor having a cardiac stability analysis module; analyzing an amplitude component of the PPG signal at the cardiac stability analysis module to determine an amplitude variance of the PPG signal over a predetermined time period; analyzing a temporal component of the PPG signal at the cardiac stability analysis module to determine a pulse period variance of the PPG signal over the time period; and calculating cardiac stability of the patient at the cardiac stability analysis module based on the amplitude variance and the pulse period variance. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A tangible and non-transitory computer readable medium that includes one or more sets of instructions configured to direct a computer to:
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receive a PPG signal from a sensor secured to an anatomical portion of a patient over a predetermined time period; determine an amplitude variance of the PPG signal over the time period; determine a pulse period variance of the PPG signal over the time period; and calculate cardiac stability of the patient based on the amplitude variance and the pulse period variance. - View Dependent Claims (17, 18, 19, 20)
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Specification