Sensor-based phrenic nerve stimulation detection
AssigneeMedtronic, Inc.
InventorsNathan A. Grenz, Karen J. Kleckner, Xusheng Zhang
Life of this patent
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Abstract
A method and device for detecting phrenic nerve stimulation (PNS) in, or using, a cardiac medical device. A test signal sensitive to contraction of a diaphragm of a patient may be sensed and signal artifacts of the test signal within each of a first window of the test signal prior to a predetermined cardiac signal and a second window of the test signal subsequent to the predetermined cardiac signal may be determined. The PNS beat criteria may be evaluated, for example, using the test signal, which may be a heart sounds signal.
Claims1
A method of detecting phrenic nerve stimulation (PNS) in a cardiac medical device, comprising:
- sensing a test signal, the test signal being sensitive to contraction of a diaphragm of a patient;
- determining signal artifacts of the test signal within each of a first window of the test signal prior to a predetermined cardiac signal and a second window of the test signal subsequent to the predetermined cardiac signal;
- determining, in response to signal artifacts of the test signal within the first window and the second window, whether PNS beat criteria have been satisfied;
- determining, in response to the PNS beat criteria being satisfied, whether PNS episode criteria have been satisfied;
- and
- detecting a PNS episode in response to the PNS episode criteria being satisfied.
Dependencies are inferred from the claim text.