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Detection of late potentials by adaptive filtering

Content Provider	IEEE Xplore Digital Library
Author	Shelton, L.Y. Cano, G.C. Coast, D.A. Briller, S.A. Shelton, L.Y.
Copyright Year	1990
Description	Author affiliation: Allegheny-Singer Res. Inst., Pittsburgh, PA, USA (Shelton, L.Y.; Cano, G.C.; Coast, D.A.; Briller, S.A.; Shelton, L.Y.)
Abstract	A process called adaptive filtering which permits the observation of small deflections resembling late potentials in individual beats is discussed. Preliminary investigation was done on 12 normal subjects and five patients scheduled for electrophysiology studies (EPSs) who have histories of cardiopulmonary arrest, symptoms of unexplained syncope, or documented malignant ventricular arrhythmias. Two high-frequency ECG signals were acquired for 40 s at a sampling rate of 1000 samples/s per channel. The digitized signals were high-pass filtered, which reduces T waves and low-frequency noise. After selecting primary and reference channels on the basis of noise content, a 400-ms interval inclusive QRS was adaptively filtered. Approximately 40 to 50 beats were adaptively filtered in each case. These signals were averaged to effect further noise reduction.<>
Starting Page	91
Ending Page	92
File Size	128814
Page Count	2
File Format	PDF
DOI	10.1109/NEBC.1990.66302
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-03-26
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptive filters Electrocardiography Noise reduction Filtering Error correction Digital filters Frequency Low-frequency noise Heart Radar
Content Type	Text
Resource Type	Article

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