Back to results
US 2012/0259183 A1Published application
Transient sensor response to posture as a measure of patient status
AssigneeCardiac Pacemakers, Inc.
InventorsPramodsingh Hirasingh Thakur, Abhilash Patangay, John D. Hatlestad, Kenneth C. Beck
Life of this patent
Estimating the term…
Abstract
Patient posture information can be received, such as to indicate a change in patient posture by at least a threshold amount. A transient response signal indicative of a change in a physiological parameter can be received at multiple instances near a change in patient posture. Waveform morphology features can be extracted from a transient response signal and used to provide an indication of a cardiac status, such as a heart failure status.
Claims20
An apparatus, comprising:
- a processor circuit, including:
- a first data input configured to receive information indicative of a change in posture status;
- a second data input configured to receive, at multiple instances temporally near the change in posture status, a transient response signal of a physiological parameter in response to the change in posture status;
- and
- a processor-readable medium, including instructions that, when performed by the processor, configure the apparatus to:
- extract a waveform morphology feature from the transient response signal;
- and
- provide an indication of a cardiac status using the extracted waveform morphology feature.
5 more elements
A method, comprising:
- receiving information indicative of a change in posture status;
- receiving, at multiple instances temporally near the change in posture status, a transient response signal of a physiological parameter in response to the change in posture status;
- extracting a waveform morphology feature from the transient response signal;
- and
- providing an indication of a cardiac status using the extracted waveform morphology feature.
2 more elements
An apparatus, comprising:
- a processor circuit, including:
- a first data input configured to receive information indicative of a change in posture status;
- a second data input configured to receive, at multiple instances temporally near the change in posture status, a transient response signal of a physiological parameter in response to the change in posture status;
- and
- a processor-readable medium, including instructions that, when performed by the processor, configure the apparatus to:
- model the transient response signal as a first or second order system response signal;
- extract a characteristic parameter of the modeled first or second order system signal, the characteristic parameter including at least one of a delay duration, a decay duration, a natural frequency of oscillation, or a magnitude change of a portion of the system response signal;
- and
- provide, using the extracted characteristic parameter, an indication of worsening heart failure.
6 more elements
Dependencies are inferred from the claim text.