Quantitative analysis of errors due to power-line interference and base-line drift in detection of onsets and offsets in ECG using wavelets

Medical & Biological Engineering & Computing
J S SahambiR K Bhatt

Abstract

Timing characterisation of the ECG using wavelet transforms is a new technique in which multiscale analysis reduces the influence of noise. This technique issued to investigate the effect of noise and to estimate the errors involved in the detection of onsets and offsets of ECG waves. With appropriate choice of scales of analysis, the study shows that the errors involved in the measurement of QRS width in the presence of base-line wander are negligible. The 50 Hz power-line interference introduces a maximum error of 6.25% if it is greater than 50% of the signal amplitude. The P and T complexes are not affected by power-line interference, but the base-line wander introduces a maximum error of 9.6%. In situations with the simultaneous presence of both types of noise, the use of an optimised scale restricts the errors to within clinically acceptable limits.

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Citations

Jun 15, 1999·Medical & Biological Engineering & Computing·J S SahambiR K Bhatt
Jun 22, 2012·Medical & Biological Engineering & Computing·Jeon LeeKyoung-joung Lee
Aug 25, 2005·Biomedical Engineering Online·Chavdar LevkovIvan Dotsinsky
Nov 21, 2008·Biomedical Engineering Online·Ivan A Dotsinsky, Georgy S Mihov
Jun 2, 2000·IEEE Engineering in Medicine and Biology Magazine : the Quarterly Magazine of the Engineering in Medicine & Biology Society·J S SahambiR K Bhatt
Aug 10, 2005·Physiological Measurement·Paul S Addison
Oct 26, 2005·Journal of Clinical Monitoring and Computing·Jean-Claude Nunes, Amine Nait-Ali
Mar 1, 2017·Biomedical Engineering Online·Salah HamdiMohamed Hedi Bedoui
Jan 10, 2021·ISA Transactions·Ashish KumarManjeet Kumar

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