NDLI: A baseline tracking algorithm for drift reduction in electrocardiography

Content Provider	IEEE Xplore Digital Library
Author	Ezenwa, B.N. Gupta, M.M. Nikforuk, P.N. Prasad, K.
Copyright Year	1992
Description	Author affiliation: Saskatchewan Univ., Saskatoon, Sask., Canada (Ezenwa, B.N.; Gupta, M.M.; Nikforuk, P.N.; Prasad, K.)
Abstract	Baseline drift reduction in electrocardiogram (ECG) by a high-pass digital/analog filter at frequencies higher than 0.5 Hz distort the waveshapes of the ECG signal. The authors describe a drift-reduction method, called the baseline tracking algorithm (BTA), that preserves the ECG waveshapes. The isoelectric regions before the P-wave and after the T-wave and the P-Q interval of an ECG signal are used for drift reduction. The BTA makes drift correction on a beat-by-beat basis. The algorithm was tested on various drift/ECG amplitude (1.43 to 0.005) and frequency (3.3 to 0.006) ratios, and for stress test ECG. Test results show that, at low frequency, the BTA can correct for drift in the ECG signal when the drift/ECG amplitude ratio is less than 0.6. At low drift amplitude, the BTA can correct for drift when the drift/ECG frequency ratio is less than 0.67. The stress-test ECG drift correction was very satisfactory.<>
Starting Page	1230
Ending Page	1232
File Size	562888
Page Count	3
File Format	PDF
ISBN	0780307852
DOI	10.1109/IEMBS.1988.94889
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-11-04
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrocardiography Frequency Testing Stress Educational institutions Filters Skin Nonlinear distortion Laboratories Physiology
Content Type	Text
Resource Type	Article

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