Patent ID: 8750976
Filing Date: 2014-06-10
Classification: A61B,A61N

Abstract:
1. A method for use in an implantable medical device for detecting cardiac arrhythmias in a patient, the method comprising: acquiring a first cardiac signal in a first heart chamber, the first cardiac signal comprising events corresponding to activations of the first heart chamber; acquiring a second cardiac signal in a second heart chamber, the second cardiac signal comprising events corresponding to activations of the second heart chamber; determining whether the first signal is unreliable; and switching from a first cardiac arrhythmia detection mode of operation to a second cardiac arrhythmia detection mode of operation in response to determining the first signal to be unreliable, the first detection mode corresponding to using both the first cardiac signal and the second cardiac signal, and the second detection mode corresponding to using the second cardiac signal and not the first cardiac signal.