HEART FAILURE PATIENTS STRATIFICATION
First Claim
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1. An apparatus comprising:
- at least a first physiological sensor circuit configured to generate a first physiological signal that is representative of cardiovascular function of a subject;
a control circuit communicatively coupled to the first physiological sensor circuit, wherein the control circuit includes;
a signal processing circuit configured to;
determine a first physiological measurement using the first physiological sensor signal and determine a plurality of the first physiological measurements using a plurality of first physiological signals produced over a specified first time period; and
determine a central tendency measurement of the plurality of physiological measurements; and
a risk circuit configured to quantify a risk of worsening heart failure (WHF) for the subject using the determined central tendency measurement, including comparing the determined central tendency measurement to one or more criteria indicative of risk of WHF,wherein the control circuit is configured to generate an indication of risk of WHF according to a comparison of the determined central tendency measurement to the one or more criteria indicative of risk of WHF.
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Abstract
A system, apparatus and method are provided to quantify a risk of worsening heart failure for subject using at least one physiological sensor circuit such as, for example, a heart sound sensor, a respiration sensor, a cardiac activity sensor, or other sensor circuit. A central tendency measurement of the at least one physiological sensor can be used to quantify the risk of worsening heart failure of the subject.
50 Citations
20 Claims
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1. An apparatus comprising:
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at least a first physiological sensor circuit configured to generate a first physiological signal that is representative of cardiovascular function of a subject; a control circuit communicatively coupled to the first physiological sensor circuit, wherein the control circuit includes; a signal processing circuit configured to; determine a first physiological measurement using the first physiological sensor signal and determine a plurality of the first physiological measurements using a plurality of first physiological signals produced over a specified first time period; and determine a central tendency measurement of the plurality of physiological measurements; and a risk circuit configured to quantify a risk of worsening heart failure (WHF) for the subject using the determined central tendency measurement, including comparing the determined central tendency measurement to one or more criteria indicative of risk of WHF, wherein the control circuit is configured to generate an indication of risk of WHF according to a comparison of the determined central tendency measurement to the one or more criteria indicative of risk of WHF. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of operating an ambulatory medical device, the method comprising:
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producing a first physiological sensor signal using a first physiological sensor of the ambulatory medical device, wherein a physiological sensor signal is representative of cardiovascular function of a subject; determining a first physiological measurement using the first physiological sensor signal; producing a plurality of the first physiological sensor signals over a specified first time period and determining a plurality of physiological measurements using the plurality of first physiological sensor signals; determining a central tendency measurement of the plurality of physiological measurements; quantifying a risk of WHF for the subject using the determined central tendency measurement, including comparing the determined central tendency measurement to one or more criteria indicative of risk of WHF; and generating an indication of risk of WHF according to a comparison of the determined central tendency measurement to the one or more criteria indicative of risk of WHF. - View Dependent Claims (18, 19, 20)
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Specification