Method and system for restricting ECG (Electrocardiogram) interference caused by cardio-pulmonary resuscitation and external defibrillator

A cardiopulmonary resuscitation, electrical interference technology, applied in the fields of cardiac defibrillator, medical science, diagnosis, etc., can solve the problem of algorithm specificity not meeting the requirements, misjudgment, etc., to eliminate ECG interference, reduce interruption, suppress ECG the effect of interference

Active Publication Date: 2015-02-04
ARMY MEDICAL UNIV
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Problems solved by technology

However, when the patient's basic rhythm is not ventricular fibrillation (such as pulseless electrical activity, cardiac arrest), the specificity of the algorithm cannot meet the requirements, which will lead to a large number of misjudgments, and wrongly judge the situation that is not ventricular fibrillation. Ventricular fibrillation such that unnecessary interruption of CPR

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  • Method and system for restricting ECG (Electrocardiogram) interference caused by cardio-pulmonary resuscitation and external defibrillator
  • Method and system for restricting ECG (Electrocardiogram) interference caused by cardio-pulmonary resuscitation and external defibrillator
  • Method and system for restricting ECG (Electrocardiogram) interference caused by cardio-pulmonary resuscitation and external defibrillator

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Embodiment Construction

[0051] The present invention will be described in detail below in conjunction with accompanying drawing, as figure 1 Shown:

[0052] A method for suppressing cardiopulmonary resuscitation-induced electrocardiographic interference of the present invention specifically comprises the following steps:

[0053] Step 1, collecting electrocardiographic signals and voltage signals of thoracic impedance signals. A pair of external defibrillation / ECG electrodes is used to apply a low current excitation signal to the patient, and a voltage signal mixed with the ECG signal and the chest impedance excitation signal is simultaneously detected through the electrodes.

[0054] Step 2, preprocessing the above-mentioned collected voltage signal. The band-pass filter is used to preprocess the collected voltage signal, and the function of preprocessing is to filter out the low-frequency drift and high-frequency noise in the voltage signal. The preprocessing utilizes a band-pass filter to filte...

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Abstract

The invention discloses a method and system for restricting the ECG (Electrocardiogram) interference caused by cardio-pulmonary resuscitation and an external defibrillator, relating to the technical field of EGG detection. The method comprises the following steps: 1, acquiring an ECG signal and a voltage signal of a reference signal; 2, processing and analyzing the acquired ECG signal and voltage signal; 3, comparing the processed signals with a set value; 4, when the processed signal is greater than the set value, carrying out adaptive filtering; 5, when the processed signal is less than the set value, carrying out rhythm analysis; 6, processing and analyzing the signal subjected to adaptive filtering and returning to continuously execute the step 3. The method and system and the external defibrillator disclosed by the invention, the acquired ECG signal and the reference signal subjected to frequency domain analysis, and the energy of inference in the ECG signal and the proportion to the interference energy to the total energy of signals are calculated. The frequency of circulation filtering and the step length factor of adaptive filtering are controlled by using the proportion of the interference energy so as to realize dynamic adjustment of the filtering strength, the pushing interference element in the ECG signal is furthest restricted and the characteristics of the ECG signal are highlighted.

Description

technical field [0001] The invention relates to the technical field of electrocardiogram detection, in particular to a method for suppressing electrocardiographic interference caused by cardiopulmonary resuscitation. Background technique [0002] At present, cardiopulmonary resuscitation (CPR) is a key measure for rescuing critically ill patients with sudden cardiac arrest, and the quality of chest compression directly affects the survival of patients. Therefore, the 2010 International Cardiopulmonary Resuscitation Guidelines require a compression frequency of at least 100 times per minute, and an adult compression depth of at least 5 cm. However, deep chest compressions will greatly interfere with the detection of the patient's ECG signal. Because the presence of strong interference overwhelms the patient's original ECG signal, emergency personnel cannot accurately judge the patient's ECG rhythm, and the automatic external defibrillator cannot effectively detect the ECG rhy...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0402A61N1/39
CPCA61B5/7207A61B5/318
Inventor 李永勤龚渝顺陈碧华杨克柽王建杰何密
Owner ARMY MEDICAL UNIV
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