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twa measuring device and twa measuring method

A measuring method and technology for measuring devices, which are applied in the directions of diagnostic recording/measurement, medical science, sensors, etc., can solve the problems such as the inability to fully grasp the state of odd and even heartbeats, and the inability to objectively grasp the reliability of the indicated TWA.

Active Publication Date: 2017-04-12
NIHON KOHDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In the related art, as described above, the presence / absence of TWA can be determined, but the states of odd and even heartbeats cannot be sufficiently grasped
Furthermore, the reliability of values ​​indicating the magnitude of TWA cannot be grasped objectively

Method used

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  • twa measuring device and twa measuring method

Examples

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Effect test

Embodiment 1

[0039]Hereinafter, the TWA measuring device and the TWA measuring method of Example 1 will be described. In the embodiment, the state of the odd and even heartbeats and the reliability of the TWA feature quantity are grasped from the electrocardiogram waveforms of the odd and even heartbeats, which are obtained by measuring electrodes of the electrocardiogram . The embodiments can also be applied to dynamic electrocardiogram analyzers or biological information monitors instead of electrocardiograms.

[0040] (Configuration of TWA measuring device)

[0041] figure 1 It is a block diagram of the TWA measurement device of Example 1. The TWA measuring device of Example 1 was set in an electrocardiograph.

[0042] As shown in the figure, the TWA measurement device 100 includes an electrocardiograph control unit 110 , measurement electrodes 120 , a display unit 130 , a patient information input unit 140 , a patient information storage unit 150 , and a TWA measurement unit 160 . ...

Embodiment 2

[0107] Next, the TWA measuring device and the TWA measuring method of Example 2 will be described. In the embodiment, the states of the odd and even heart beats and the reliability of the TWA feature quantity are grasped from the electrocardiogram waveforms of the odd and even heart beats acquired externally through the electrocardiogram data input section. The TWA measurement device and TWA measurement method of the above-mentioned embodiment differ from the first embodiment only in that the electrocardiogram waveform cannot be obtained from the measurement electrodes.

[0108] (Configuration of TWA measuring device)

[0109] Figure 8 It is a block diagram of the TWA measurement device of Example 2. The TWA measuring device of Example 2 was set in an electrocardiograph.

[0110] As shown in the figure, the TWA measurement device 200 includes an electrocardiograph control unit 210 , an electrocardiogram data input unit 220 , a display unit 230 , a patient information input...

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Abstract

A TWA measurement device, comprising: a T-wave feature quantity measurement section; a classification section, which classifies the T-wave feature quantity into odd and even electrocardiogram waveform groups; a reliability index calculation section, which calculates: the odd and even numbers The first representative value and the second representative value and the first discrete value and the second discrete value of the T-wave feature quantity in the group; The difference between the first representative value and the second representative value to obtain the TWA feature and an adjustment value between the first representative value and the first discrete value and an adjustment value between the second representative value and the second discrete value to obtain a reliability index; and reliability An identifying unit that identifies that the reliability of the TWA feature is high when the reliability index exceeds a threshold, and that the reliability is low when the reliability index does not exceed the threshold.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the benefit of priority from prior Japanese Patent Application No. 2013-002859 filed on January 10, 2013, the entire contents of which are hereby incorporated by reference. Background technique [0003] The subject matter of the present disclosure relates to a TWA measuring device and a TWA measuring method capable of accurately measuring TWA (T-wave alternation). [0004] TWA occurs during the onset of disorders such as long QT syndrome, variant angina, acute myocardial ischemia, electrolyte abnormalities, paroxysmal tachycardia, bradycardia, or pericardial effusion. TWA is a phenomenon in which the amplitude and polarity of T waves appearing in an electrocardiogram alternately, and is an effective index for predicting sudden cardiac death. TWA is not always a phenomenon that can be observed with the naked eye, so its application in the clinic is limited. [0005] Therefore, sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0452A61B5/366
CPCA61B5/7221A61B5/364A61B5/366A61B5/349A61B5/35A61B5/355
Inventor 高柳恒夫贝阿彌隆
Owner NIHON KOHDEN CORP