Physiologic signal processing to determine a cardiac condition

Details Physiologic signal processing to determine a cardiac condition Physiologic signal processing to determine a cardiac condition

2008-11-26

2011-12-27

Gedeon, Brian T (Department: 3766)

Surgery

Diagnostic testing

Cardiovascular

Reexamination Certificate

active

08086304

ABSTRACT:
In a method for determining a cardiac condition, a sensed physiologic signal for a period of time including multiple cardiac cycles is received. Using the received physiologic data, a heart beat frequency to be used as a reference frequency is determined. A plurality of harmonics of the received physiologic signal is extracted based on the reference frequency, wherein the harmonics correspond to a plurality of alternans frequencies. Amplitudes of at least some of the extracted harmonics are determined, and are used to determine an alternans indicator value.

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