Reduction of electromyographic noise in the signal-averaged electrocardiogram by spectral decomposition.
This paper proposes a technique to improve the quality of high-resolution electrocardiogram by weighting the coherent average of beats by a function of the energy of the corrupting myoelectric noise, prior to subsequent detection of ventricular late potentials. The results obtained with 20 patients indicate the method requires fewer beats than conventional nonweighted average to achieve the same noise level.
Barbosa
Paulo Roberto B
PR
Biomedical Engineering Program, COPPE, Federal University of Rio de Janeiro and Pedro Ernesto University Hospital, UERJ, Rio de Janeiro, Brazil.
Barbosa-Filho
José
J
de Sá
Carlos Alberto M
CA
Barbosa
Eduardo C
EC
Nadal
Jurandir
J
D000465:Algorithms; D016477:Artifacts; D004562:Electrocardiography / Q000379:methods*; D004576:Electromyography / Q000379:methods*; D006801:Humans; D007366:Intercostal Muscles / Q000502:physiology; D008954:Models, Biological; D015233:Models, Statistical; D009068:Movement / Q000502:physiology; D011786:Quality Control; D012143:Respiratory Physiological Phenomena; D012815:Signal Processing, Computer-Assisted; D013223:Statistics as Topic; D013269:Stochastic Processes; D013909:Thorax / Q000502:physiology