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Method for examining property of heart recovery based on cardiogram of flat motion

A technology of tablet exercise and electrocardiogram, applied in image data processing, diagnostic recording/measurement, medical science, etc., can solve problems such as induced ventricular fibrillation and high risk

Inactive Publication Date: 2007-02-21
WUHAN UNIV
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Problems solved by technology

However, so far, the recovery property has not been applied clinically. In addition to academic controversies, the most important reason is the limitation of its evaluation method: 1. It is invasive, requiring electrodes to be inserted into the heart via blood vessels for pacing; 2. , high risk, the existing methods use ventricular myocardium refractory period or induced arrhythmia as the pacing endpoint, and there is a risk of inducing ventricular fibrillation

Method used

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  • Method for examining property of heart recovery based on cardiogram of flat motion
  • Method for examining property of heart recovery based on cardiogram of flat motion
  • Method for examining property of heart recovery based on cardiogram of flat motion

Examples

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Embodiment 1

[0044] Example 1 Evaluation of cardiac recovery properties of treadmill exercise electrocardiogram in patients with ischemic heart disease

[0045] Ischemic diseases have significantly increased the possibility of ventricular fibrillation and sudden cardiac death in the heart. In recent years, it has been found that these malignant arrhythmias may be derived from increased dynamic instability, and the restorative nature is considered to be the most important factor in the increase in dynamic instability. . The theory of recovery believes that the greater the slope (slope) of the recovery curve, the more likely it is for malignant arrhythmia to occur. This experiment observes the difference between the QT recovery properties of treadmill exercise electrocardiogram of male patients with ischemic heart disease and the control group.

[0046] 1. Case selection: 26 men were selected for this experiment, divided into ischemic heart disease group (14 cases) and control group (12 cases). ...

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Abstract

A method for testing the heart recovery quality based on the plate movement electrocardiogram includes such steps as recording the plate movement electrocardiogram, choosing fixed leads for continuously measuring the QT gaps at intervals not higher than 10 S, taking the average of 3 waveforms for analysis, using ORIGIN software to analyze TQ gaps one by one, non-linear fitting by particular indicial equation to obtain QT recovery curve, using the ORIGIN software to generate its slope distribution curve, finding out the minimal TQ gap relative to movement peak, and finding out its relative value on vertical coordinate axis to obtain maximal slope Smax.

Description

Technical field [0001] The present invention relates to the field of risk assessment of malignant arrhythmia and non-invasive evaluation of cardiac ischemia, in particular to a method for detecting cardiac recovery properties based on treadmill exercise electrocardiogram, which is suitable for predicting the risk of malignant arrhythmia by non-invasive means and evaluating the state of cardiac ischemia. Background technique [0002] At present, the prediction techniques for malignant arrhythmia generally include the following types: intracardiac electrophysiological examination, ventricular late potential, heart rate variability, QT dispersion, T wave electrical alternation, heart rate oscillation, etc. The positive predictive value of indicators such as central ventricular late potential, heart rate variability and QT dispersion is low, and the false positive rate is high. There are quite a lot of malignant ventricular arrhythmias that cannot be accura...

Claims

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Application Information

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IPC IPC(8): A61B5/0402A61B5/0452G06T17/00
Inventor 江洪赵冬冬
Owner WUHAN UNIV
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