Systems and methods for detecting or validating signals in...

Details Systems and methods for detecting or validating signals in... Systems and methods for detecting or validating signals in...

2007-01-22

2011-12-13

Bertram, Eric D. (Department: 3766)

Surgery

Diagnostic testing

Cardiovascular

Reexamination Certificate

active

08078272

ABSTRACT:
Detecting or validating signals such as cardiac beats can be performed in the presence of myopotential or other noise. An amplitude peak, which can be a candidate for a detected beat, can be used in a normalized or other weighted average, along with a preceding and subsequent sample. The weighted average is compared to a noise threshold. Based on the result, the amplitude peak is either deemed an actual beat (e.g., depolarization or repolarization), or noise. The described systems, devices, and methods can improve the accuracy of detecting an actual beat in the presence of noise, during normal sinus rhythm or during an arrhythmia such as ventricular fibrillation. This, in turn, improves the accuracy with which therapy is delivered or withheld by an implantable device.

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