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A new multi-window detection approach for P-wave boundary points in electrocardiograms based on bilateral
Abstract:
This study presented an efficient and robust multi-window detection method for P-wave boundary points in electrocardiograms on the basis of bilateral accumulative area. Through mathematical analysis, the local extreme points of bilateral accumulative area curves were respectively found in a fitting parabola, which might be regarded as a significant indicator for the morphological characteristic of boundary points. And, bilateral accumulative area curves of different window lengths had different sensitivities to the details and contours of signals. With combination of the multi-window and 12-lead synchronous detection, the proposed method could screen the optimal boundary points from all extreme points of different window lengths, and adaptively match the P-wave location. The results of the proposed method were evaluated on the dataset-3 of the standard CSE database. As a result, the value of sensitivity Se = 97.8% was obtained for the detection of P-wave, with the standard deviations of 3.9 ms and 4.8 ms respectively for the onset and offset of P-wave.
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01:29Electrocardiogram
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01:30Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
01:24ECG Interpretation of Rhythms
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The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
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