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US 2014/0276163 A1Published application
Diagnostic and optimization using exercise recovery data
AssigneeCardiac Pacemakers, Inc.
InventorsPramodsingh Hirasingh Thakur, Qi An, Barun Maskara
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Abstract
An apparatus, such as a cardiac function management system can detect heart sounds following a sensed transition in physical activity level, such as from an elevated physical activity level to rest. A technique can include systems, methods, machine-readable media, or other techniques that can include identifying a physical activity level transition, receiving a heart sound signal, determining characteristics of the heart sound and subject physiologic activity to provide an indication, such as a heart failure status indication.
Claims20
A system comprising:
- a sensor interface circuit configured to obtain information indicative of both (1) a physical activity of a subject and (2) a heart sound of the subject from the same mechanical sensor, and to provide a resulting sensor signal;
- a signal processor circuit, coupled to the sensor interface circuit to receive the sensor signal, the signal processing circuit configured to, using information about the sensor signal:
- detect a physical activity level transition from an elevated activity level to a less elevated activity level;
- identify a heart sound relative to the physical activity level transition;
- and
- determine a heart sound characteristic of the identified heart sound;
- and
- determine a resulting physiologic indicator using the determined heart sound characteristic.
5 more elements
A method comprising:
- obtaining both (1) a physical activity of a subject and (2) a heart sound of the subject from the same mechanical sensor,
- providing a resulting sensor signal;
- detecting a physical activity level transition from an elevated activity level to a less elevated activity level using the resulting sensor signal;
- identifying a heart sound relative to the physical activity level transition;
- determining a heart sound characteristic of the identified heart sound;
- and
- determining a resulting physiologic indicator using the determined heart sound characteristic.
4 more elements
Dependencies are inferred from the claim text.