System and method for monitoring myocardial performance using sensed ventricular pressures
First Claim
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1. A medical device for chronically monitoring cardiac function in a patient, comprising:
- an input circuit that receives a pressure signal representative of a pressure sensed within a ventricle of a heart as a function of time; and
a processor that derives from the pressure signal a myocardial performance index based upon pressures in the ventricle and provides an output based upon the myocardial performance index.
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Abstract
A medical device chronically monitors cardiac function in a patient. An input circuit of the medical device receives a pressure signal representative of a pressure sensed within a ventricle of the patient'"'"'s heart as a function of time. A processor derives from the pressure signal a myocardial performance index based upon pressures in the ventricle. The processor then provides an output based upon the myocardial performance index.
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Citations
23 Claims
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1. A medical device for chronically monitoring cardiac function in a patient, comprising:
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an input circuit that receives a pressure signal representative of a pressure sensed within a ventricle of a heart as a function of time; and
a processor that derives from the pressure signal a myocardial performance index based upon pressures in the ventricle and provides an output based upon the myocardial performance index. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for chronically monitoring cardiac function in a patient, the method comprising:
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sensing a blood pressure within a ventricle of the patient'"'"'s heart as a function of time;
deriving from the sensed blood pressure a myocardial performance index based upon pressure in the ventricle; and
providing an output based upon the myocardial performance index. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for determining a set of pacing settings for a pacemaker implanted in a patient, the method comprising:
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administering a plurality of pacing settings, each pacing setting being administered for a period of time;
monitoring an effect of each pacing setting on a myocardial performance index, the myocardial performance index being determined from a pressure signal sensed from within a ventricle of the patient'"'"'s heart; and
selecting from the plurality of pacing settings a set of pacing settings based upon the myocardial performance index.
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Specification