Tiered antitachycardia pacing and pre-pulsing therapy
First Claim
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1. A method, comprising:
- detecting a ventricular tachycardia; and
applying a tiered antitachycardia pacing (ATP) therapy consisting of one or more of;
providing ATP through electrodes of progressively larger surface area,providing ATP through progressively larger volumes of cardiac tissue, orproviding ATP through different pacing vectors.
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Abstract
An implantable system applies tiered antitachycardia pacing (ATP) that may be combined with pre-pulsing therapy in order to reduce pain. In one implementation, an exemplary system applies a progression of increasingly potent pacing vectors, progressing in an initial tier from small electrodes inside the heart to later tiers that increasingly use a large electrode surface outside the heart. In the latter tiers, a pre-pulse may be added prior to each ATP pulse to reduce the sensation of pain.
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Citations
13 Claims
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1. A method, comprising:
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detecting a ventricular tachycardia; and applying a tiered antitachycardia pacing (ATP) therapy consisting of one or more of; providing ATP through electrodes of progressively larger surface area, providing ATP through progressively larger volumes of cardiac tissue, or providing ATP through different pacing vectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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applying antitachycardia pacing to treat ventricular tachycardia; sensing whether the ventricular tachycardia has stopped; and changing electrode locations to obtain larger electrode surface areas for applying the antitachycardia pacing if the ventricular tachycardia has not stopped. - View Dependent Claims (11, 12)
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13. An implantable cardiac therapy system comprising:
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at least one lead comprising a plurality of electrodes defining a plurality of stimulation vectors; an implantable cardiac therapy device adapted to be connected to the at least one lead and comprising an antitachycardia pacing module to generate antitachycardia pacing pulses to be delivered via the at least one lead via a selected stimulation vector, wherein the implantable cardiac therapy device further comprises a sensor to sense a ventricular tachycardia and to control the antitachycardia pacing module to generate the antitachycardia pacing pulses, and wherein the implantable cardiac therapy device is operative to change stimulation vectors to obtain larger electrode surface areas if the ventricular tachycardia has not stopped.
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Specification