System and method for rapid optimization of control parameters of an implantable cardiac stimulation device
First Claim
1. A method for identifying preferred control parameters for use in controlling an implantable cardiac stimulation device for implant within a patient, the method comprising the steps of:
- controlling the implantable device to deliver therapy to the heart of the patient during a series of consecutive periods that are substantially equal in duration to one another and less than about 12 seconds each in duration by alternating, from one evaluation period to another, between different sets of selected test control parameters and a set of reference control parameters;
detecting values representative of transient cardiac performance corresponding to the different sets of control parameters during the evaluation periods; and
estimating optimal control parameters for maximizing cardiac performance based on a difference between the values representative of transient cardiac performance during each consecutive pair of evaluation periods.
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Abstract
Techniques are provided for rapidly optimizing control parameters of pacemakers or implantable cardioverter defibrillators. Briefly, the heart is paced using different sets of control parameters during a sequence of consecutive short evaluation periods of equal duration, which each last only about 5-12 seconds. Transient cardiac performance is monitored during each of the short evaluation phases and optimal parameter settings are then estimated based on changes in the transient cardiac performance from one parameter setting to another. By using a series of consecutive short evaluation periods of equal duration, rather than switching between short test periods and longer baseline periods, the overall duration of the test can be reduced as compared to predecessor techniques that require long intervening baseline periods.
27 Citations
21 Claims
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1. A method for identifying preferred control parameters for use in controlling an implantable cardiac stimulation device for implant within a patient, the method comprising the steps of:
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controlling the implantable device to deliver therapy to the heart of the patient during a series of consecutive periods that are substantially equal in duration to one another and less than about 12 seconds each in duration by alternating, from one evaluation period to another, between different sets of selected test control parameters and a set of reference control parameters; detecting values representative of transient cardiac performance corresponding to the different sets of control parameters during the evaluation periods; and estimating optimal control parameters for maximizing cardiac performance based on a difference between the values representative of transient cardiac performance during each consecutive pair of evaluation periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification