Atrial pacing therapy for treating mitral regurgitation
First Claim
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1. A method comprising:
- identifying a regurgitant mitral or tricuspid valve in a patient;
implanting a cardiac rhythm management device in the patient for delivering pacing therapy to the heart through one or more pacing electrodes;
delivering ventricular pacing therapy and pacing therapy in a manner which excites an atrium during ventricular systole, referred to as secondary atrial pacing;
delivering the secondary atrial pacing with timing based upon ventricular events such that a secondary atrial pace is delivered at a secondary ventricular-atrio interval subsequent to a ventricular pace or sense; and
,delivering left ventricular pacing therapy based upon right ventricular senses, wherein a secondary ventricular-atrio interval of one specified duration is initiated by a left ventricular pace while a secondary ventricular-atrio interval of another duration is triggered by a right ventricular sense.
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Abstract
A method and apparatus are disclosed for treating mitral regurgitation with electrical stimulation. By providing pacing stimulation to the left atrium during ventricular systole, a beneficial effect is obtained which can prevent or reduce the extent of mitral regurgitation.
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Citations
14 Claims
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1. A method comprising:
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identifying a regurgitant mitral or tricuspid valve in a patient; implanting a cardiac rhythm management device in the patient for delivering pacing therapy to the heart through one or more pacing electrodes; delivering ventricular pacing therapy and pacing therapy in a manner which excites an atrium during ventricular systole, referred to as secondary atrial pacing; delivering the secondary atrial pacing with timing based upon ventricular events such that a secondary atrial pace is delivered at a secondary ventricular-atrio interval subsequent to a ventricular pace or sense; and
,delivering left ventricular pacing therapy based upon right ventricular senses, wherein a secondary ventricular-atrio interval of one specified duration is initiated by a left ventricular pace while a secondary ventricular-atrio interval of another duration is triggered by a right ventricular sense. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable cardiac device, comprising:
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pulse generating circuitry coupled to one or more electrodes and configured to deliver pacing pulses to a cardiac chamber; sensing circuitry coupled to one or more electrodes and configured to detect electrical activity from a cardiac chamber; a controller coupled to the pulse generating and sensing circuitry and configured to control the delivery of pacing pulses; wherein the controller is programmed to delivering pacing therapy in a manner which excites an atrium during ventricular systole, referred to as secondary atrial pacing; wherein the controller is programed to deliver ventricular pacing and to deliver the secondary atrial pacing with timing based upon ventricular events such that a secondary atrial pace is delivered at a secondary ventricular-atrio interval subsequent to a ventricular sense or pace; and
,wherein the controller is programmed to deliver left ventricular pacing therapy based upon right ventricular senses, wherein a secondary ventricular-atrio interval of one specified duration is initiated by a left ventricular pace while a secondary ventricular-atrio interval of another duration is triggered by a right ventricular sense. - View Dependent Claims (12, 13, 14)
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Specification