DYNAMIC DEVICE THERAPY CONTROL FOR TREATING POST MYOCARDIAL INFARCTION PATIENTS
First Claim
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1. An implantable pacemaker, comprising:
- a pacing circuit configured to deliver pacing pulses;
an activity sensor configured to sense an activity level; and
a pacing controller coupled to the pacing circuit and the activity sensor, the pacing controller configured to control the delivery of the pacing pulses by executing a pacing algorithm and including;
a myocardial infarction detector configured to detect a signal indicative of a myocardial infarction event; and
a dynamic pacing parameter controller configured to be activated in response to the detection of the signal indicative of the myocardial infarction event and, after being activated, compare the sensed activity level to a threshold and execute a first pacing algorithm in response to the sensed activity level exceeding the threshold and a second pacing algorithm in response to the sensed activity level not exceeding the threshold.
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Abstract
A cardiac rhythm management system includes an implantable device executing a dynamic pacing algorithm after an myocardial infarction (MI) event. The dynamic pacing algorithm dynamically adjusts one or more pacing parameters based on a person'"'"'s gross physical activity level. Examples of the one or more pacing parameters include atrioventricular pacing delays and pacing channels/sites. The dynamic pacing algorithm provides for improved hemodynamic performance when a person'"'"'s metabolic need is high, and post MI remodeling control when the person'"'"'s metabolic need is low.
100 Citations
20 Claims
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1. An implantable pacemaker, comprising:
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a pacing circuit configured to deliver pacing pulses; an activity sensor configured to sense an activity level; and a pacing controller coupled to the pacing circuit and the activity sensor, the pacing controller configured to control the delivery of the pacing pulses by executing a pacing algorithm and including; a myocardial infarction detector configured to detect a signal indicative of a myocardial infarction event; and a dynamic pacing parameter controller configured to be activated in response to the detection of the signal indicative of the myocardial infarction event and, after being activated, compare the sensed activity level to a threshold and execute a first pacing algorithm in response to the sensed activity level exceeding the threshold and a second pacing algorithm in response to the sensed activity level not exceeding the threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for operating an implantable pacemaker, the method comprising:
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detecting a signal indicative of a myocardial infarction event; executing a dynamic pacing algorithm in response to the detection of the signal indicative of the myocardial infarction event, the dynamic pacing algorithm including at least a first pacing algorithm and a second pacing algorithm, the executing including; sensing an activity level; comparing the activity level to a threshold; executing the first pacing algorithm in response to the activity level exceeding the predetermined threshold; and executing the second pacing algorithm in response to the activity level not exceeding the predetermined threshold. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification