Automatic selection of stimulation chamber for ventricular resynchronization therapy
First Claim
1. A method, comprising:
- recording intrinsic electrograms, including QRS complexes, of a left and a right ventricle;
determining a timing relationship between intrinsic electrograms of the left and the right ventricle; and
selecting one or more ventricular chambers in which to provide pacing pulses based on the timing relationship between intrinsic electrograms of the left and the right ventricle.
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Abstract
A method and apparatus for selection of one or more ventricular chambers to stimulate for ventricular resynchronization therapy. Intrinsic intracardia electrograms that include QRS complexes, are recorded from a left and right ventricle. A timing relationship between the intrinsic intracardia electrograms recorded from the left and right ventricle is then determined. In one embodiment, the timing relationship is determined using a delay between a left ventricular and a right ventricular sensed intrinsic ventricular depolarizations and a duration interval of one or more QRS complexes. In one embodiment, the duration of QRS complexes is determined from either intracardiac electrograms or from surface ECG recordings. One or more ventricular chambers in which to provide pacing pulses are then selected based on the timing relationship between intrinsic intracardia electrograms recorded from the right and left ventricle, and the duration of one or more QRS complexes.
36 Citations
33 Claims
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1. A method, comprising:
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recording intrinsic electrograms, including QRS complexes, of a left and a right ventricle;
determining a timing relationship between intrinsic electrograms of the left and the right ventricle; and
selecting one or more ventricular chambers in which to provide pacing pulses based on the timing relationship between intrinsic electrograms of the left and the right ventricle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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sensing intrinsic ventricular depolarizations, including QRS complexes, of a left ventricle and a right ventricle;
calculating a delay between a left ventricular and a right ventricular sensed intrinsic ventricular depolarizations;
measuring a duration interval of one or more QRS complexes; and
selecting one or more ventricular chambers in which to provide pacing pulses based on the duration interval of the QRS complex and the delay between the left ventricular and the right ventricular sensed intrinsic ventricular depolarizations. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An apparatus, comprising:
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at least one receiver, where the receiver receives intrinsic electrograms of a left ventricle and a right ventricle;
a controller, where the controller determines a timing relationship between intrinsic electrograms of the left and right ventricle; and
a ventricular chamber selector coupled to the controller, where the ventricular chamber selector selects one or more ventricular chambers in which to provide pacing pulses based on the timing relationship between intrinsic electrograms of the right and left ventricle. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification