Method of identifying secondary degree atrioventricular block from 10-second electrocardiogram

Abstract

The invention discloses a method for identifying secondary degree atrioventricular block from a 10-second electrocardiogram. The method comprises the following steps of: processing an original electrocardiosignal to extract secondary degree atrioventricular block characteristics; carrying out training by using a marked electrocardiogram database to judge whether each electrocardiogram signal is alogistic regression model od a secondary degree atrioventricular block; and solving the probability of each electrocardiogram signal being the secondary degree atrioventricular block by using the trained model. According to the method, the extracted characteristics are used for training the machine learning model, so that the secondary degree room atrioventricular block detection technology has better accuracy and robustness; when the characteristics are extracted, high-quality and non-PVC QRS waves are selected to calculate heart rate characteristics; and meanwhile, multiple P wave features are extracted, so that false positive secondary degree atrioventricular block detection caused by sinus arrhythmia, atrial or ventricular premature beat, noise interference and the like is effectivelyprevented.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a method for identifying second-degree atrioventricular block from a 10-second electrocardiogram. Background technique [0002] During the transmission of electrical excitation from the atrium to the ventricle, sometimes there will be some conduction terminals (that is, there is ventricular leakage), which is called second-degree atrioventricular block. Second-degree atrioventricular block is divided into second-degree type I (Wen's type) and second-degree type II (Mobitz type). The ECG of Wenkowski type shows that the PR interval gradually prolongs until the QRS complex falls off, and the ECG of Mobitz type shows that the PR interval is fixed, and one or several ventricular missed beats occur every one or several cardiac cycles. Second-degree atrioventricular block is clinically common and can have serious consequences. The more the number of ventricular missed beats, the slo...

AI Technical Summary

Problems solved by technology

Since the RR interval of many second-degree AV blocks with missed beats will be less than 1.9 times the average RR interval, such a method may have a large number of omissions; at the same time, due to sinus arrhythmia, premature atrial Premature contractions (PVC), noise interference, etc., many ECGs of non-second-degree atrioventricular block may also have RR intervals that are 1.9-2.1 times the average RR interval, so this method is likely to lead to a large number of false positive second-degree atrial block Ventricular block is detected

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