Method and apparatus for phrenic stimulation detection
First Claim
1. A method of controlling operation of a medical device, the method comprising:
- delivering a pulse with a predetermined pulse energy as part of a cardiac capture threshold test;
determining if the delivered pulse produced phrenic stimulation;
continuing the capture threshold test when it is determined that the delivered pulse did not produce phrenic stimulation; and
halting the capture threshold test when detecting, using the medical device, that the delivered pulse did produce phrenic stimulation.
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Abstract
Approaches for characterizing a phrenic stimulation threshold, a cardiac capture threshold, a maximum device parameter, and a minimum device parameter are described. A plurality of cardiac pacing pulses can be delivered by using a cardiac pacing device, a pacing parameter of the plurality of cardiac pacing pulses being changed between delivery of at least some of the pulses. One or more sensor signals can be evaluated to detect stimulation of the phrenic nerve by one or more of the plurality of cardiac pacing pluses. The evaluation of the one or more sensor signals and the pacing parameter can be compared to determine if a phrenic stimulation threshold is at least one of higher than a maximum device parameter and lower than a minimum device parameter.
476 Citations
20 Claims
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1. A method of controlling operation of a medical device, the method comprising:
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delivering a pulse with a predetermined pulse energy as part of a cardiac capture threshold test; determining if the delivered pulse produced phrenic stimulation; continuing the capture threshold test when it is determined that the delivered pulse did not produce phrenic stimulation; and halting the capture threshold test when detecting, using the medical device, that the delivered pulse did produce phrenic stimulation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A medical apparatus, comprising;
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a pulse generator for generating pulses at selectable pulse energy; and a controller operatively coupled to the pulse generator, the controller configured to; initiate delivery of a pace pulse with a predetermined pacing pulse energy as part of a cardiac capture threshold test; determine when the delivered pulse produced phrenic stimulation; continue the capture threshold test when it is determined that the delivered pulse did not produce phrenic stimulation; and halt the capture threshold test when determining that the delivered pulse did produce phrenic stimulation. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method, comprising;
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(a) selecting an electrode combination of a plurality of electrode combinations; (b) delivering a pulse with a predetermined pacing pulse energy via the selected electrode combination; (c) determining if the delivered pulse produced phrenic stimulation; (d) continuing the capture threshold test when it is determined that the delivered pulse did not produce phrenic stimulation; (e) halting the capture threshold test when detecting, using the medical device, that the delivered pulse did produce phrenic stimulation; and (f) repeating steps (a)-(e) for at least one other electrode combination of the plurality of electrode combinations. - View Dependent Claims (18, 19, 20)
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Specification