Automatic selection of stimulation chamber for ventricular resynchronization therapy
First Claim
1. A method, comprising:
- sensing intrinsic ventricular depolarizations of a left ventricle and a right ventricle;
sensing a cardiac signal which includes a QRS complex;
determining timing relationships between intrinsic ventricular depolarizations of the left and the right ventricle;
determining a duration of the QRS complex; and
,selecting one or more ventricular chambers in which to provide pacing pulses based on the timing relationship between intrinsic ventricular depolarizations of the left and the right ventricle and the duration of the QRS complex.
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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
22 Claims
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1. A method, comprising:
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sensing intrinsic ventricular depolarizations of a left ventricle and a right ventricle; sensing a cardiac signal which includes a QRS complex; determining timing relationships between intrinsic ventricular depolarizations of the left and the right ventricle; determining a duration of the QRS complex; and
,selecting one or more ventricular chambers in which to provide pacing pulses based on the timing relationship between intrinsic ventricular depolarizations of the left and the right ventricle and the duration of the QRS complex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system, comprising:
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means for sensing intrinsic ventricular depolarizations of a left ventricle and a right ventncle; means for sensing a cardiac signal which includes a QRS complex; means for determining timing relationships between intrinsic ventricular depolarizations of the left and the right ventricle; means for determining a duration of the QRS complex; and
,means for selecting one or more ventricular chambers in which to provide pacing pulses based on the timing relationship between intrinsic ventricular depolarizations of the left and the right ventricle and the duration of the QRS complex. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification