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US 6,662,047 B2Granted
Pacing mode to reduce effects of orthostatic hypotension and syncope
AssigneePacesetter, Inc.
InventorsChris Sorensen, Mark W. Kroll, Gene A. Bornzin
Life of this patent
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Abstract
An implantable cardiac stimulation device is programmed to administer pacing therapy in response to a change in a patient's position and a drop in blood pressure. The stimulation device is equipped with a position sensor to sense a position parameter indicative of when a patient changes from a supine position to an upright position and a pressure sensor to sense a pressure parameter indicative of a patient's blood pressure. The device administers cardiac pacing therapy to the patient based on both the position parameter and the pressure parameter.
Claims56
An implantable cardiac rhythm management device, comprising:
- position sensing means for sensing a change in a patient's position from a supine position to an upright position;
- pressure sensing means for sensing when a patient's blood pressure drops below a predefined threshold;
- and
- therapy delivery means, responsive to the position sensing means and the pressure sensing means, for generating cardiac stimulating pulses at an increased rate effective to treat orthostatic hypotension when the patient moves from a supine position to an upright position and the patient's blood pressure drops below the predefined threshold.
1 more element
A cardiac stimulation device, comprising:
- position sensing means for sensing changes in a patient's position;
- pressure parameter sensing means for sensing a parameter indicative of a patient's blood pressure, the pressure parameter sensing means detecting a drop in the patient's blood pressure below a predefined threshold;
- and
- therapy administration means, responsive to the position sensing means and the pressure parameter sensing means, for administering cardiac pacing therapy to the patient based on the changes in the patient's position and the patient's blood pressure dropping below the predefined threshold.
1 more element
A programmable cardiac stimulation device having a memory and a processor, the cardiac stimulation device being programmed to perform tasks comprising:
- administering pacing therapy to a patient when the patient experiences both (1) a change in position from a supine position to an upright position and (2) a drop in blood pressure below a predefined threshold;
- and
- subsequently removing the pacing therapy in a systematic manner.
A cardiac stimulation device comprising:
- a position sensor to sense a position parameter indicative of changes in a patient's position;
- a pressure sensor to sense a pressure parameter indicative of a patient's blood pressure;
- a processor operably coupled to the position sensor and the pressure sensor, the processor being configured to determine when to administer cardiac pacing therapy to the patient based on the position parameter and the pressure parameter, the processor being configured to monitor the pressure parameter during administration of the cardiac pacing therapy and to remove the cardiac pacing therapy in response to a change in the pressure parameter;
- and
- a pacing generator configured to administer the cardiac pacing therapy as directed by the processor.
2 more elements
An implantable cardiac rhythm management device, comprising:
- position sensing means for sensing a change in a patient's position;
- pressure sensing means for sensing when a patient's blood pressure drops below a predefined threshold;
- and
- therapy delivery means for selectively administering pacing therapy to the patient based on the patient's position and the patient's blood pressure, and for monitoring the patient's blood pressure during administration of the pacing therapy and for removing the pacing therapy in response to a change in the patient's blood pressure.
1 more element
A method comprising:
- determining a position parameter indicative of a change in a patient's position;
- determining a pressure parameter indicative of a patient's blood pressure;
- and
- selectively administering pacing therapy to the patient based on the position parameter and the pressure parameter;
- wherein the determining a pressure parameter comprises:
- monitoring a patient's blood pressure;
- and
- detecting a drop in the patient's blood pressure below a predefined threshold.
5 more elements
A method comprising:
- determining a position parameter indicative of a change in a patient's position;
- determining a pressure parameter indicative of a patient's blood pressure;
- and
- selectively administering pacing therapy to the patient based on the position parameter and the pressure parameter;
- wherein the determining a pressure parameter comprises:
- monitoring a physiological parameter that can be correlated with a patient's blood pressure;
- and
- detecting a change in the physiological parameter that correlates to a drop in the patient's blood pressure below a predefined threshold.
5 more elements
A method of administering pacing therapy for orthostatic hypotension, comprising:
- detecting a change in a patient's position from a supine position to an upright position;
- detecting a drop in a patient's blood pressure below a predefined threshold;
- and
- adjusting a cardiac pacing rate from a first pacing rate to a second pacing rate effective to counteract effects of orthostatic hypotension in response to detection of the change in the patient's position and the drop in the patient's blood pressure.
1 more element
A method of administering pacing therapy for vasovagal syncope, comprising:
- detecting a change in a patient's position from a supine position to an upright position;
- detecting a drop in the patient's blood pressure below a predefined threshold;
- and
- adjusting a cardiac pacing rate from a first pacing rate to a second pacing rate effective to counteract effects of vasovagal syncope in response to detection of the change in the patient's position and a drop in the patient's blood pressure below the predefined threshold.
1 more element
A method comprising:
- increasing a pacing rate in a cardiac stimulation device from a first rate to a higher second rate when a patient experiences both (1) a change in position from a supine position to an upright position and (2) a drop in blood pressure below a predefined threshold;
- and
- subsequently decreasing the pacing rate back toward the first rate.
A method comprising:
- determining a position parameter indicative of a change in a patient's position;
- determining a pressure parameter indicative of a patient's blood pressure;
- selectively administering pacing therapy to the patient based on the position parameter and the pressure parameter;
- monitoring the pressure parameter during administration of the pacing therapy;
- systematically removing the pacing therapy in response to a change in the pressure parameter.
2 more elements
Dependencies are inferred from the claim text.