A new method based on down-sampling for QRS complexes detection.
- Author:
Xuefei LI
1
;
Dongping XIAO
;
Wei HE
;
Huiqing DUAN
Author Information
1. Chongqing University, Key Laboratory of High Voltage and Electrical Theory New Technology, Education Ministry of China, Chongqing 400044, China. cqulixuefei@126.com
- Publication Type:Journal Article
- MeSH:
Algorithms;
Electrocardiography;
methods;
Humans;
Sensitivity and Specificity;
Signal Processing, Computer-Assisted
- From:
Journal of Biomedical Engineering
2008;25(4):818-821
- CountryChina
- Language:Chinese
-
Abstract:
This paper presented a new method based on down-sampling for QRS complexes detection for the reason that ECG's frequency components mostly centralize 0.05-35 Hz. Firstly, the original ECG signals were down-sampled. Secondly, self adapting and self study theory were used to select the amplitude threshold and slope threshold for R-wave detection. At the same time, the refractory idiosyncrasy of heart was taken into account to reduce the misdetection. Thirdly, back-trace technique was used to reduce undetected error. Finally, the corresponding R-wave position was up-dated in the original ECG signals. The performance of the method was tested by MIT/BIH ECG database and the clinical data were collected from the affiliated hospital of Chongqing Medical University. The detection rate of 98% was achieved. Experimental results indicated that the method was simple, effective, accurate and unaffected on sample rate.
