Surgery – Diagnostic testing – Cardiovascular
Patent
1997-05-29
1998-11-24
Getzow, Scott M.
Surgery
Diagnostic testing
Cardiovascular
A61B 50452
Patent
active
058400389
ABSTRACT:
A method and apparatus for signal averaging and analyzing high resolution P wave signals from an electrocardiogram. The method and apparatus for averaging the P wave portion of ECG signals includes sensing human ECG signals having at least a QRS portion and a P wave portion, detecting the QRS portion of the ECG signals, suppressing the QRS portion of the ECG signals, generating a P wave detection function from the wave portion of the ECG signals, cross correlating the P wave portions of the ECG signals and averaging the cross correlated P wave signals. The method and apparatus for analyzing high resolution P wave signals includes averaging at least a portion of the ECG signals, filtering the averaged signals, deriving the vector magnitude (VM) of the filtered averaged signals, determining the base noise level, and setting the P onset and P offset of the VM signals above the noise level.
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Reddy Shankara
Xue Qiuzhen
Getzow Scott M.
Marquette Medical Systems, Inc.
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