System and method for delivery of cardiac pacing in a medical device in response to ischemia
First Claim
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1. A method for delivering cardiac pacing with an implantable medical device to a patient having a heart having an atrium and a ventricle, comprising the steps of:
- delivering the cardiac pacing;
detecting myocardial ischemia;
then if the myocardial ischemia is detected and the cardiac pacing is in an atrial-only pacing mode at a first time, altering the cardiac pacing to an atrial and ventricular pacing mode; and
if the myocardial ischemia is detected and the cardiac pacing is in the atrial and ventricular pacing mode at a second time, different from the first time, altering the cardiac pacing to the atrial-only pacing mode.
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Abstract
An implantable medical device system and method in which the implantable device is adapted to operate in a minimum ventricular pacing mode. The device delivers cardiac pacing pulses in a first pacing mode during a normal mode of operation and upon detecting myocardial ischemia alters the first pacing mode in response to the myocardial ischemia detection.
39 Citations
32 Claims
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1. A method for delivering cardiac pacing with an implantable medical device to a patient having a heart having an atrium and a ventricle, comprising the steps of:
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delivering the cardiac pacing; detecting myocardial ischemia;
then if the myocardial ischemia is detected and the cardiac pacing is in an atrial-only pacing mode at a first time, altering the cardiac pacing to an atrial and ventricular pacing mode; andif the myocardial ischemia is detected and the cardiac pacing is in the atrial and ventricular pacing mode at a second time, different from the first time, altering the cardiac pacing to the atrial-only pacing mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable medical device system adapted to deliver cardiac pacing, comprising:
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a plurality of electrodes; an output circuit coupled to the plurality of electrodes for delivering cardiac pacing; means for detecting myocardial ischemia; a control circuit, operatively coupled to the output circuit, for controlling the delivery of cardiac pacing pulses by the output circuit; and a processor, coupled to the control circuit and the means for detecting myocardial ischemia, configured to; alter the cardiac pacing to an atrial and ventricular pacing mode if the cardiac pacing is an atrial-only pacing mode and if the detecting means detect myocardial ischemia; and alter the cardiac pacing to an atrial-only pacing mode if the cardiac pacing is in an atrial and ventricular mode and if the detecting means detect myocardial ischemia. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A non-transitory computer readable medium for storing a set of instructions which when implemented in an implantable medical device system cause the system to perform a method for delivering cardiac pacing with an implantable medical device to a patient having a heart having an atrium and a ventricle, comprising the steps of:
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delivering the cardiac pacing; detecting myocardial ischemia;
thenif the myocardial ischemia is detected and the cardiac pacing is in an atrial-only pacing mode at a first time, altering the cardiac pacing to an atrial and ventricular pacing mode; and if the myocardial ischemia is detected and the cardiac pacing is in the atrial and ventricular mode at a second time, different than the first time, altering the cardiac pacing to the atrial-only pacing mode.
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19. A method for delivering a cardiac therapy with an implantable medical device to a patient with a heart having an atrium and a ventricle, comprising the steps of:
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delivering the cardiac therapy only to the atrium of the patient;
thenmeasuring the time interval between sequential depolarizations of the atrium and the ventricle;
thenif the time interval between sequential depolarizations of the atrium and the ventricle is outside of a predetermined range, delivering the cardiac therapy to both the atrium and the ventricle;
thendetecting a myocardial ischemia in the patient;
thenif the cardiac therapy is being delivered only to the atrium of the patient and the myocardial ischemia is detected, delivering the cardiac therapy to both the atrium and the ventricle;
elseif the cardiac therapy is being delivered to both the atrium and the ventricle and the myocardial ischemia is detected, delivering the cardiac therapy to only the atrium. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A method for delivering cardiac pacing with an implantable medical device to a patient having a heart having an atrium and a ventricle, comprising the steps of:
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delivering the cardiac pacing; detecting myocardial ischemia;
thenif the myocardial ischemia is detected and the cardiac pacing is in an atrial-only pacing mode altering the cardiac pacing to an atrial and ventricular pacing mode. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification