General Electric Company

Ge Medical Systems Information Technologies Gmbh

Ge Marquette Hellige Gmbh

Inomed Medizintechnik Gmbh

Willi Kaiser

Martin Findeis

Joel Qiuzhen Xue

Brian Joseph Young

Gordon Ian Rowlandson

Derek Exner

Michael Slawnych

Martin Fideis

Celine Wegner

Thilo Krüger

Karin Somerlik - Fuchs

A method for generating a cardiac electrical instability assessment is disclosed herein. The method includes obtaining a short duration T-wave alternans (SDTWA) measurement, obtaining a long duration T-wave alternans (LDTWA) measurement, and obtaining a cardiac electrical instability assessment based on both the SDTWA measurement and the LDTWA measurement.

Method and system for detecting T-wave alternans

A system and method for the efficient implementation of a complex exercise test is disclosed. A rule interpreter synthesizes interpretation statements based upon the processing of collected physiological data and user entered data with a series of exercise test interpretation rules. These statements aid a clinician in interpreting exercise test results by identifying detected abnormal or borderline conditions.

Exercise test interpretation

An apparatus and method for obtaining information, such as heart rate or the presence of atrial fibrillation, from electrodes applied to the feet of a subject. A scale having electrodes may be used for this purpose. The signal obtained from the electrodes is digitized and filtered to obtain an electrocardiographic signal exhibiting periodic, sequential, discrete, magnitudinal variations associated with the heartbeats of the subject. The electrocardiographic signal is then analyzed to identify discrete magnitudinal variations useful for obtaining the desired information. In determining the heart rate of the subject, an interval between variations having a desired magnitudinal characteristic may be employed. The absence of such variations is indicative of atrial fibrillation.

Apparatus and method for obtaining cardiac data

A method and apparatus for analyzing a physiological waveform. The apparatus comprising an input terminal for connection to a patient to acquire the physiological waveform from a patient, an instrumentation amplifier connected to the input terminal to filter the physiological waveform, and an analysis module including a processor and software for operating the processor to detect cyclic artifact in the physiological waveform. The method comprising the acts of obtaining the physiological waveform and determining whether there is more than one independent complex rhythm within the digital physiological waveform.

Method and apparatus for analyzing a physiological waveform

Method and apparatus for displaying alternans data of an electrocardiogram signal having a plurality of odd beats and a plurality of even beats. The method can include calculating an odd median complex for at least one of the plurality of odd beats, the odd median complex having a plurality of odd data points; calculating an even median complex for at least one of the plurality of even beats, the even median complex having a plurality of even data points; comparing the plurality of odd data points with the plurality of even data points to generate a plurality of difference data points; assigning each one of the plurality of difference data points a color corresponding to an amplitude; displaying the plurality of difference data points as a difference curve; and displaying a plurality of difference curves in a temporal alignment.

Method and apparatus for displaying alternans data

A method and system for improved measurement of T-wave alternans in an ECG signal is disclosed. The method and system comprise receiving digitized ECG data including a plurality of alternating consecutive odd and even beats, calculating a variability for at least one odd or even beat, and excluding certain beats from T-wave alternans measurements according to an exclusion procedure.

Method and system for improved measurement of T-wave alternans

An electrocardiogram processing technique for measuring T-wave alternans by which the alternating electrocardiogram signals are aligned to a target cubic spline. The target cubic spline is calculated on base of three isoelectric points namely a point before the P-wave, a point before the QRS-complex and a point after the T-wave. The aligned signals may then be further analyzed for variations such as T-wave alternans which are only present in alternating beats and which have diagnostic significance.

Method and system for measuring T-wave alternans by alignment of alternating median beats to a cubic spline

The invention relates to an electrocardiogram arrangement having a plurality of lead channels, in which at least two lead channels are assigned an evaluation unit (,, . . . ) which evaluates the ECG quality, classifies the results and locates the QRS complexes. For the QRS complex location, a central logic unit (,) selects that lead channel which has the highest ECG quality as the dominant lead channel. When special events occur in the dominant lead channel, other lead channels are accessed as appropriate.

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Emmendingen, Germany

Willi Kaiser