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6th Internet World Congress for Biomedical Sciences

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APPLICATION OF A RECURSIVE NON-LINEAR ADAPTIVE FILTER TO RECOVER FOETAL ELECTROCARDIOGRAM.

Marcelino Martinez_Sober(1), EMILIO SORIA OLIVAS(2), Antonio J. Serrano López(3), Alfredo Rosado(4), José David Martín Guerrero(5)
(1)Universidad de Valencia - Burjassot. Spain
(2)DPTO INGENIERÍA ELECTRONICA. FACULTAD DE FISICAS - BURJASSOT/VALENCIA. Spain
(3)Dpto. Electrónica. Universidad de Valencia - Burjasot. Spain
(4)Departamento de Electrónica. Universidad de Valencia - Burjassot. Spain
(5)G.P.D.S. Departament d´Enginyeria Electrònica. Universitat de València - Burjassot. Spain

Discussion Board Contact address: Marcelino Martinez_Sober
Universidad de Valencia
Fac. Fisica. Dep. Ingenieria Electronica Dr. Moliner, 50 Burjassot
Valencia 46100 Spain
marcelino.martinez@uv.es
[ABSTRACT] [INTRODUCTION] [MATHEMATICAL DEVELOPMENT] [RESULTS] [IMAGES] [CONCLUSIONS] [BIBLIOGRAPHY] [Discussion Board]
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ABSTRACT

A new adaptive algorithm to recover foetal electrocardiogram is proposed. The algorithm employs two derivations: a thoracic one that is used as a reference signal containing the maternal contribution mainly, and an abdominal one in which there is an overlapping between maternal signal, foetal contribution, and a high level of noise.

The new proposed procedure combines a recursive adaptive algorithm with a non-linear function applied to the output of the filter with an "artificial neuron"-like structure.

In order to test the behaviour of the algorithm, we have used several real recordings from different foetal gestational ages as soon as simulated records in which all the parameters can be controlled (maternal and foetal contributions, addition of several kinds of noise like baseline wander and electromyogram).

Outcomes reveal that the algorithm has better performance than the Widrow´s classic adaptive structure with significant advantages in regard to its performance, which is not highly dependent on the selected parameters like the length of the adaptive filter or the adaptive constant. It also has a low computational burden and does not rely on the maternal QRS complex detection, like in other algorithms based on pattern subtraction.

The use of this technique allows the recovering of the foetal electromyogram during pregnancy, from whom not only the cardiac beat rate can be determined but also additional information related to the waveform.


Keywords: foetal - ECG - cardiology - informatics -

Discussion Board
Discussion Board

Any Comment to this presentation?

[ABSTRACT] [INTRODUCTION] [MATHEMATICAL DEVELOPMENT] [RESULTS] [IMAGES] [CONCLUSIONS] [BIBLIOGRAPHY] [Discussion Board]

Main Page Previous: MCS - MAKING MEDICAL APPOINTMENT SYSTEM AND SERVICES Previous: Reduced energy consumption by dexamethasone in the mouse heart. Previous: Cholesterol Granuloma (Cholesteroloma) Of The Mammary Gland INTRODUCTION
[New Technology]
Next: NEMESIS: A new telemedicine approach for co-operative work on cardiology
[Cardiolovascular Diseases]
Next: ACQUISITION AND ANALYSIS OF RR TEMPORAL SERIES FROM HOLTER RECORDINGS
[Obstetrics & Gynecology]
Next: To Breastfeed is To Love (Lactar é Amar)
Marcelino Martinez_Sober, EMILIO SORIA OLIVAS, Antonio J. Serrano López, Alfredo Rosado, José David Martín Guerrero
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