Methods for ectopy rejection for atrial fibrillation detection based on ventricular cycle lengths
AssigneeMedtronic, Inc.
InventorsShantanu Sarkar, Eduardo N. Warman
Life of this patent
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Abstract
A medical device performs a method to classify a cardiac rhythm. Differences between cycle lengths in a first heart chamber are determined during an established time interval. Evidence of ectopy associated with irregular coupling intervals is detected from the signal during the established time interval. A rhythm classification output corresponding to a second heart chamber at the expiration of the established time interval is provided in response to the consecutive cycle length differences and the evidence of ectopy associated with irregular coupling intervals.
Claims23
A method for classifying a cardiac rhythm, comprising:
- obtaining a signal comprising cardiac cycle length information in a patient;
- determining cycle lengths in a first heart chamber from the signal during an established time interval;
- determining differences between consecutive ones of the cycle length in the first heart chamber;
- detecting evidence of ectopy associated with irregular coupling intervals from the signal during the established time interval;
- and
- providing a rhythm classification output corresponding to a second heart chamber at the expiration of the established time interval in response to the consecutive cycle length differences and the evidence of ectopy associated with irregular coupling intervals.
A medical device for classifying a cardiac rhythm, comprising:
- a sensor to sense a signal comprising cardiac cycle length information in a patient;
- and
- a processor to receive the signal and configured to:
- determine cycle lengths in a first heart chamber from the signal during an established time interval;
- determine differences between consecutive ones of the cycle length in the first heart chamber;
- detect evidence of ectopy associated with irregular coupling intervals from the signal during the established time interval;
- and
- generate a rhythm classification output corresponding to a second heart chamber at the expiration of the established time interval in response to the consecutive cycle length differences and the evidence of ectopy associated with irregular coupling intervals.
A computer-readable medium storing a set of instructions which cause a processor of an implantable medical device to perform a method comprising:
- obtaining a signal comprising cardiac cycle length information in a patient;
- determining cycle lengths in a first heart chamber from the signal during an established time interval;
- determining differences between consecutive ones of the cycle length in the first heart chamber;
- detecting evidence of ectopy associated with irregular coupling intervals from the signal during the established time interval;
- and
- providing a rhythm classification output corresponding to a second heart chamber at the expiration of the established time interval in response to the consecutive cycle length differences and the evidence of ectopy associated with irregular coupling intervals.
Dependencies are inferred from the claim text.