Estimating acute response to cardiac resynchronization therapy
First Claim
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1. A method, comprising:
- measuring, using at least a hemodynamic sensor and another sensor, a plurality of different types of systolic timing intervals of a plurality of different events of a cardiac cycle, at least one of the systolic timing intervals based on a mechanical cardiac event;
storing patient population data;
implementing an inferential statistical fusion algorithm to combine the measured different types of systolic timing intervals of the plurality of different events of the cardiac cycle and the patient population data to compute a calculated estimate or probability of acute responsiveness to cardiac resynchronization therapy (CRT);
comparing the estimate or probability to a threshold, the threshold distinguishing between acute responsiveness and non-responsiveness to CRT for a patient population; and
producing an indication of acute responsiveness to CRT for a pacing site of a patient'"'"'s heart in response to the comparison.
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Abstract
Systolic timing intervals are measured in response to delivering pacing energy to a pacing site of a patient'"'"'s heart. An estimate of a patient'"'"'s acute response to cardiac resynchronization therapy (CRT) for the pacing site is determined using the measured systolic timing intervals. The estimate is compared to a threshold. The threshold preferably distinguishes between acute responsiveness and non-responsiveness to CRT for a patient population. An indication of acute responsiveness to CRT for the pacing site may be produced in response to the comparison.
23 Citations
20 Claims
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1. A method, comprising:
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measuring, using at least a hemodynamic sensor and another sensor, a plurality of different types of systolic timing intervals of a plurality of different events of a cardiac cycle, at least one of the systolic timing intervals based on a mechanical cardiac event; storing patient population data; implementing an inferential statistical fusion algorithm to combine the measured different types of systolic timing intervals of the plurality of different events of the cardiac cycle and the patient population data to compute a calculated estimate or probability of acute responsiveness to cardiac resynchronization therapy (CRT); comparing the estimate or probability to a threshold, the threshold distinguishing between acute responsiveness and non-responsiveness to CRT for a patient population; and producing an indication of acute responsiveness to CRT for a pacing site of a patient'"'"'s heart in response to the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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measuring, using a plurality of sensors, a plurality of different types of systolic timing intervals based on a plurality of cardiac events, wherein the measuring comprises detecting at least one mechanical cardiac event of a cardiac cycle; computing a calculated estimate or probability of acute responsiveness to cardiac resynchronization therapy (CRT) for a pacing site based on an inferential statistical fusion operation performed on the plurality of different types of measured systolic timing intervals; comparing the estimate or the probability to a threshold, the threshold distinguishing between acute responsiveness and non-responsiveness to CRT for a patient population; and producing an indication of acute responsiveness to CRT for a pacing site of a patient'"'"'s heart in response to the comparison. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification