Method for Extracting Abnormal Waveforms of a Portable Electrocardiogram Measuring Device

Abstract

By extracting characteristic abnormal waveforms from the electrocardiogram waveforms measured by a portable electrocardiogram measuring device and converting them into data, it is utilized for the determination and diagnosis of arrhythmias such as paroxysmal atrial fibrillation based on this. 【Solution means】In the electrocardiogram measurement of a portable electrocardiogram measuring device including a sensor unit 110 that contacts the human body, a control unit 120 that receives and processes the detection signal of the sensor unit, and a display unit 130 that displays electrocardiogram information, an abnormal waveform is extracted. A normalizing signal generation step of detecting a plurality of R signals among the electrode signals measured by the sensor unit and generating a normalizing signal in which the periods of the R signals are rearranged at a constant value, and in the generated normalizing generation step, an abnormal waveform extraction step of extracting R signals outside a preset reference range, and an abnormal waveform visualization step of visualizing and providing the signal of the extracted abnormal waveform in an electrocardiogram graph.

Claims

1. A method of operating a portable electrocardiogram measuring device including a sensor unit that contacts the human body, a control unit that receives and processes the detection signal of the sensor unit, and a display unit that displays electrocardiogram information, comprising: an electrocardiogram signal acquisition step in which the control unit obtains an electrode signal measured by the sensor unit; a normalization signal generation step in which the control unit detects a plurality of R signals among the obtained electrode signals and generates a normalization signal in which the periods of the R signals are rearranged at a constant rate, wherein the normalization signal is used to distinguish a regular signal and an irregular signal by being integrated for each period of the electrode signal; an abnormal waveform extraction step in which the control unit extracts R signals outside a preset reference range among the R signals generated in the normalization signal generation step; an abnormal waveform visualization step in which the control unit visualizes and provides the signal of the extracted abnormal waveform as an electrocardiogram graph on the display unit. A method of operating a portable electrocardiogram measuring device, characterized by including these steps.

2. The normalization signal in the normalization signal generation step is a signal obtained by rearranging the electrode signal based on the average value of the R intervals among the electrode signals including a plurality of R intervals from the start point of measurement. The method of operating a portable electrocardiogram measuring device according to Claim 1, characterized by this.

3. The control unit further includes an integrated index providing step of calculating and analyzing an integrated index including the characteristics of the electrocardiogram signal based on the result data extracted in the abnormal waveform extraction step, In the integrated index providing step, the control unit calculates indexes of accuracy, sensitivity, specificity, and positive predictive value using the extracted result data, assigns a weight value to each calculated index, and selectively combines the indexes to calculate the integrated index. The integrated index is calculated such that when the change range of some of the indexes is higher than a preset range, the control unit decreases the weight value of the some indexes and increases the weight value of the remaining indexes. The method of operating a portable electrocardiogram measuring device according to Claim 1 or 2, characterized by this.

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