Method and apparatus to detect ischemia with a pressure sensor
First Claim
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1. An implantable medical device comprising:
- an implantable pressure sensor providing a signal indicative of a patient'"'"'s blood pressure;
a data processing module coupled to the pressure sensor,the data processing module configured to determine a blood pressure rate of change based on the blood pressure signal;
the data processing module configured to identify at least one of impaired relaxation and impaired contractility based on a maximum value of the blood pressure rate of change and to detect ischemia in response thereto; and
a therapy module comprising a pacing electrode coupled to the data processing module and configured to deliver therapy to the patient responsive to the identification of one of impaired relaxation and impaired contractility.
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Abstract
The present disclosure provides an apparatus and method of detecting ischemia with a pressure sensor. The method can include obtaining a pressure signal and determining a pressure rate of change. The method can also include identifying at least one of impaired relaxation and impaired contractility in order to detect ischemia.
71 Citations
9 Claims
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1. An implantable medical device comprising:
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an implantable pressure sensor providing a signal indicative of a patient'"'"'s blood pressure; a data processing module coupled to the pressure sensor, the data processing module configured to determine a blood pressure rate of change based on the blood pressure signal; the data processing module configured to identify at least one of impaired relaxation and impaired contractility based on a maximum value of the blood pressure rate of change and to detect ischemia in response thereto; and a therapy module comprising a pacing electrode coupled to the data processing module and configured to deliver therapy to the patient responsive to the identification of one of impaired relaxation and impaired contractility. - View Dependent Claims (2, 3, 4)
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5. A method of delivering a therapy to a patient, comprising:
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employing a pressure sensor implanted in the patient to provide a signal indicative of a patient'"'"'s blood pressure; employing a processing module implanted in the patient and coupled to the pressure sensor to determine a maximum value of blood pressure rate of change from the blood pressure signal; employing the implanted processing module to identify at least one of impaired relaxation and impaired contractility based on the maximum value of the blood pressure rate of change and to detect ischemia in response thereto; and employing a therapy module comprising a pacing electrode implanted in the patient and coupled to the processing module to deliver therapy to the patient responsive to the identification of one of impaired relaxation and impaired contractility. - View Dependent Claims (6, 7, 8, 9)
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Specification