Method of using spectral measures to distinguish among atrial fibrillation, atrial flutter and other cardiac rhythms
AssigneeGE Medical Systems Information Technologies, Inc.
InventorsBasel Taha, Shankara Reddy, Joel Xue
Life of this patent
Estimating the term…
Abstract
A method and apparatus are provided for differentiating among atrial-flutter, atrial-fibrillation and other cardiac rhythms. The method includes the steps of estimating a spectral entropy of atrial cardiac activity from an electrocardiogram of a patient and determining that the patient has atrial fibrillation when the spectral entropy is greater than a predetermined value.
Claims33
A method of differentiating among atrial- flutter, atrial-fibrillation and other cardiac rhythms, such method comprising the steps of:
- estimating a spectral entropy of atrial cardiac activity from an electrocardiogram of a patient;
- and
- determining that the patient has atrial fibrillation when the spectral entropy is greater than a predetermined value.
An apparatus for differentiating among atrial-flutter, atrial-fibrillation and other cardiac rhythms, such apparatus comprising:
- means for estimating a spectral entropy of atrial cardiac activity from an electrocardiogram of a patient;
- and
- means for determining that the patient has atrial fibrillation when the spectral entropy is greater than a predetermined value.
An apparatus for differentiating among atrial-flutter, atrial-fibrillation and other cardiac rhythms, such apparatus comprising:
- an entropy processor adapted to estimate a spectral entropy of atrial cardiac activity from an electrocardiogram of a patient;
- and
- an evaluation processor adapted to determine that the patient has atrial fibrillation when the spectral entropy is greater than a predetermined value.
A method of differentiating among atrial-flutter, atrial-fibrillation and other cardiac rhythms, such method comprising the steps of:
- estimating a power spectral density of atrial electrical activity present within an electrocardiogram of a patient;
- calculating a spectral entropy from the estimated power spectral density;
- comparing the calculated spectral entropy with a threshold value;
- and
- determining that the patient has atrial-fibrillation when the compared spectral entropy exceeds the threshold and atrial flutter when the compared spectral entropy does not exceed the threshold.
Dependencies are inferred from the claim text.