Method and apparatus for regulating a cardiac stimulation therapy
First Claim
1. A method, comprising:
- sensing a blood pressure signal;
deriving a hemodynamic measure using the sensed blood pressure signal, adjusting an extra systolic stimulation control parameter in response to the hemodynamic measure, and delivering extra systolic stimulation pulses according to the adjusted control parameter.
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Abstract
A method comprising sensing a blood pressure signal, deriving a hemodynamic measure from the sensed blood pressure signal, adjusting an extra systolic stimulation control parameter in response to the hemodynamic measure, and delivering extra systolic stimulation pulses according to the adjusted control parameter. The sensed blood pressure signal may be a ventricular or arterial blood pressure signal from which an estimated cardiac output, end diastolic pressure, mean pressure or any other hemodynamic measure is derived. Adjusting the extra systolic stimulation control parameter may include adjusting a pacing rate, a pacing interval, an extra systolic stimulation ratio, an extra systolic stimulation interval or enabling or terminating the extra systolic stimulation.
89 Citations
34 Claims
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1. A method, comprising:
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sensing a blood pressure signal;
deriving a hemodynamic measure using the sensed blood pressure signal, adjusting an extra systolic stimulation control parameter in response to the hemodynamic measure, and delivering extra systolic stimulation pulses according to the adjusted control parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical device, comprising:
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a blood pressure sensor for sensing a blood pressure signal;
a signal processing module for deriving a hemodynamic measure from the sensed blood pressure signal;
a therapy delivery module for delivering extra systolic stimulation pulses;
a timing and control module for controlling the delivery of extra systolic stimulation pulses delivered by the therapy delivery module in response to the derived hemodynamic measure. - View Dependent Claims (12, 13, 14)
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15. A medical device, comprising:
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means for obtaining a blood pressure signal;
means for deriving a hemodynamic measure using the blood pressure signal;
means for adjusting an extra systolic stimulation control parameter in response to the derived hemodynamic measure;
means for delivering extra systolic stimulation pulses according to the extra systolic stimulation control parameter. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A computer readable medium for storing a set of instructions which when implemented in a system cause the system to:
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acquire a blood pressure signal;
derive a hemodynamic measure using the blood pressure signal;
adjust an extra systolic stimulation control parameter in response to the derived hemodynamic measure; and
deliver extra systolic stimulation pulses according to the extra systolic stimulation control parameter. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification