System and method for preventing recurrence of atrial tachyarrhythmia
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Abstract
A system and method for providing pacing pulses after a cardioversion/defibrillation shock, where the pacing pulses have a pacing rate at an initial value. The pacing rate is decreased from the initial value until at least one intrinsic cardiac contraction is detected. In one embodiment, the pacing rate is decreased by a set amount after pacing a set number of cardiac cycles. Providing the set number of pacing pulses and decreasing the pacing rate by the set amount is then repeated until at least one intrinsic cardiac contraction is detected. An intrinsic cardiac rate is then determined from the at least one intrinsic cardiac contraction. The pacing rate is then increased and maintained to be above (i.e., greater than) the intrinsic cardiac rate.
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Citations
23 Claims
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1-9. -9. (Canceled)
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10. A method, comprising:
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providing pacing pulses after an atrial defibrillation shock, wherein the pacing pulses have a pacing rate at an initial value that is well above an intrinsic rate;
decreasing the pacing rate from the initial value;
detecting at least one intrinsic atrial contraction;
determining an intrinsic atrial rate from the at least one intrinsic atrial contraction; and
increasing the pacing rate above the intrinsic atrial rate. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method, comprising:
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sensing an atrial cardiac signal;
analyzing the atrial cardiac signal to detect an atrial tachyarrhythmia;
providing an atrial defibrillation shock in response to the detected atrial arrhythmia;
providing pacing pulses at a first delay after an atrial defibrillation shock, wherein the pacing pulses have a pacing rate at an initial value that is well above an intrinsic rate, and wherein the pacing pulses have a pacing rate at an initial value that is in a range of 100 to 200 pacing pulses per minute;
decreasing the pacing rate from the initial value, wherein decreasing the pacing rate includes increasing an interval between the pacing pulses by a set value in the range of 7.5 to 10 milliseconds in a repeated manner until at least one intrinsic atrial contraction is detected;
determining the intrinsic atrial rate using the at least one intrinsic atrial contraction; and
increasing the pacing rate above the intrinsic atrial rate.
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20. A method, comprising:
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sensing an atrial cardiac signal;
analyzing the atrial cardiac signal to detect an atrial tachyarrhythmia;
providing an atrial defibrillation shock in response to the detected atrial arrhythmia;
providing pacing pulses at a first delay after an atrial defibrillation shock, wherein the pacing pulses have a pacing rate at an initial value that is well above an intrinsic rate, and wherein the pacing pulses have a pacing rate at an initial value that is in a range of 100 to 200 pacing pulses per minute;
decreasing the pacing rate from the initial value, wherein decreasing the pacing rate includes increasing an interval between the pacing pulses by a set value in the range of 7.5 to 10 milliseconds in a repeated manner until at least one intrinsic atrial contraction is detected;
determining the intrinsic atrial rate using the at least one intrinsic atrial contraction; and
increasing the pacing rate to just above the intrinsic atrial rate.
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21. A method, comprising:
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(a) providing pacing pulses at an initial value that is well above an intrinsic rate;
(b) incrementally decreasing the pacing rate from the initial value until at least one intrinsic atrial contraction is detected;
(c) increasing the pacing rate to just above the intrinsic atrial rate; and
(d) repeating acts (b) and (c). - View Dependent Claims (22, 23)
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Specification