Identification of onset and offset of QRS complexes based on the characteristics of angle and amplitude
Li, Y.; Hong, Y.; Wang, J.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 31(3): 572-576
2014
ISSN/ISBN: 1001-5515 PMID: 25219237 Document Number: 678278
In order to quickly and accurately identify the onset and offset of the QRS complex in electrocardiogram (ECG) signal with different forms, a triple local transform method was employed in the present study to detect the suspected onset and offset points of QRS. The accurate onset and offset points of QRS complexes were selected according to the rules drawn by the trial process based on the characteristics of angle and amplitude constituted within these suspected points. The method makes full advantage of the angle and amplitude characteristics of the QRS complex, by which the results can be acquired with some simple arithmetic quickly, accurately and adaptively. The method was investigated with data from the MIT-BIH arrhythmia database and satisfactory results were obtained.