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Method and device for testing heart rate deceleration capacity

A technology of ability and heart rate, applied in the detection field of heart rate deceleration ability, can solve the problem of not being able to distinguish between sympathetic and parasympathetic nerves

Inactive Publication Date: 2009-10-21
ZHEJIANG UNIV +1
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  • Abstract
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Problems solved by technology

However, this traditional method cannot well distinguish the role of sympathetic and parasympathetic nerves

Method used

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  • Method and device for testing heart rate deceleration capacity
  • Method and device for testing heart rate deceleration capacity
  • Method and device for testing heart rate deceleration capacity

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Embodiment Construction

[0024] Such as figure 2 As shown, the method for heart rate deceleration ability detection includes the following steps:

[0025] 1) Obtain the ECG signal, calculate the R wave position of the ECG signal, and obtain the RR interval. The present invention does not require to obtain the beating type of the heartbeat, such as normal beating, ventricular premature beat, etc., and the processing of abnormal beating is completed by the sub-step of center point selection. The ECG signal sampling rate and sampling accuracy required by the present invention are consistent with conventional electrocardiogram acquisition requirements, and the commonly used sampling rate is 250 Hz, and the sampling accuracy is 12 bits.

[0026] 2) Take the number of occurrences of RR interval as the abscissa, and the RR interval as the ordinate, draw the RR interval diagram, and select a point larger than the previous point and the latter point in the RR interval diagram, but the increase rate does not ...

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Abstract

The invention discloses a method and a device for testing heart rate deceleration capacity. The method and the device calculate RR interval from a recorded electrokardiagram, and draws an RR interval graph taking the frequency of the RR interval as a horizontal coordinate and the RR interval as a vertical coordinate; a central point is selected from the RR interval graph, L points are taken from the front of the central point and the back of the central point respectively to form RR interval sequence with the length of 2L+1; points with the same subscript in all sequences are calculated to obtain an average value, and the average value is taken as a value of a point corresponding to the subscript in average sequence; and the heart rate deceleration capacity is calculated from the obtained average sequence. The method and the device can be used for testing the activity evaluating index of parasympathetic nerve of the heart rate deceleration capacity, and provide a reliable tool for clinically researching an autonomic nervous system.

Description

technical field [0001] The invention relates to a detection method and equipment for heart rate deceleration capability, belonging to the technical field of medical detection. Background technique [0002] Myocardial infarction and heart failure are heart diseases that pose a great threat to human health. The autonomic nervous system of these patients is often damaged. At present, heart rate variability can be used to evaluate the activity of the autonomic nervous system of patients and predict cardiovascular diseases. However, this traditional method cannot well distinguish the effects of sympathetic and parasympathetic nerves. [0003] There are small changes in each beat cardiac cycle under the regulation of mechanisms such as autonomic nerves, which are called heart rate fluctuations. Typical RR interval changes such as figure 1 shown. The fluctuation of heart rate can be simply divided into two situations: fast heart rate and slow heart rate. Physiologically, incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0452A61B5/00
Inventor 宁钢民潘清龚月仙严静胡其军杨桂秋龚仕金蔡国龙张召才
Owner ZHEJIANG UNIV
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