System to treat AV-conducted ventricular tachyarrhythmia
First Claim
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1. An implantable medical device, comprising:
- pacing circuitry configured to provide bradycardia support pacing to maintain a minimum heart rate;
an atrial rate detector configured to detect an atrial rate;
a neural stimulation circuit configured to apply neural stimulation to an interior vena cava-left atrium (IVC-LA) fat pad; and
a controller operably connected to the pacing circuitry, the atrial rate detector and the neural stimulation circuit, wherein the controller is configured to control the neural stimulation circuit to deliver neural stimulation to the IVC-LA fat pad on condition that the detected atrial rate exceeds a programmable threshold programmed into the implantable medical device.
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Abstract
Various aspects of the present subject matter provide devices and methods to treat AV-conducted ventricular tachyarrhythmia (AVCVT). According to various embodiments of the method, an AVCVT is sensed, an IVC-LA fat pad is stimulated when the AVCVT is sensed to block AV conduction, and bradycardia support pacing is provided while the IVC-LA fat pad is stimulated. Other aspects and embodiments are provided herein.
108 Citations
20 Claims
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1. An implantable medical device, comprising:
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pacing circuitry configured to provide bradycardia support pacing to maintain a minimum heart rate; an atrial rate detector configured to detect an atrial rate; a neural stimulation circuit configured to apply neural stimulation to an interior vena cava-left atrium (IVC-LA) fat pad; and a controller operably connected to the pacing circuitry, the atrial rate detector and the neural stimulation circuit, wherein the controller is configured to control the neural stimulation circuit to deliver neural stimulation to the IVC-LA fat pad on condition that the detected atrial rate exceeds a programmable threshold programmed into the implantable medical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable medical device, comprising:
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pacing circuitry configured to provide bradycardia support pacing to maintain a minimum heart rate; an atrial rate detector configured to detect an atrial rate; a neural stimulation circuit configured to apply neural stimulation to an inferior vena cava-left atrium (IVC-LA) fat pad; a shockable event detector configured to detect a cardiac event indicated for an electrical shock to terminate the cardiac event; and a shock pulse generator configured to electrically shock cardiac tissue; and a controller operably connected to the shockable event detector, the shock pulse generator, the pacing circuitry, the atrial rate detector and the neural stimulation circuit, wherein the controller is configured to; respond to a detected cardiac event indicated for the electrical shock by controlling the shock pulse generator to electrically shock cardiac tissue; and control the neural stimulator to deliver neural stimulation to the IVC-LA fat pad on condition that the detected atrial rate exceeds a programmable threshold programmed into the implantable medical device. - View Dependent Claims (15, 16, 17)
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18. An implantable medical device, comprising:
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pacing circuitry configured to provide bradycardia support pacing to maintain a minimum heart rate; an atrial rate detector configured to sense an intrinsic signal from a right atrium to detect an atrial rate; a ventricular rate detector configured to sense an intrinsic signal from a right ventricle to detect a ventricular rate; a neural stimulation circuit configured to apply neural stimulation to an inferior vena cava-left atrium (IVC-LA) fat pad; a shockable event detector configured to detect a cardiac event indicated for an electrical shock to terminate the cardiac event; a shock pulse generator configured to electrically shock cardiac tissue; and a controller operably connected to the shockable event detector, the shock pulse generator, the pacing circuitry, the atrial rate detector and the neural stimulation circuit, wherein the controller is configured to; respond to a detected cardiac event indicated for the electrical shock by controlling the shock pulse generator to electrically shock cardiac tissue; control the neural stimulation circuit to deliver neural stimulation to the IVC-LA fat pad on condition that the detected atrial rate exceeds a programmable threshold programmed into the implantable medical device and that the detected ventricular rate follows the detected atrial rate; and adjust the neural stimulation if the atrial rate is not reduced by the neural stimulation. - View Dependent Claims (19, 20)
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Specification