Tuesday, 16 November 2010

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Transactions: INTERNATIONAL JOURNAL of BIOLOGY and BIOMEDICAL ENGINEERING
Transactions ID Number: 19-696
Full Name: Janusz Wrobel
Position: Doctor (Researcher)
Age: ON
Sex: Male
Address: Rroosevelt St. 118, ZABRZE 41-800
Country: POLAND
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E-mail address: januszw@itam.zabrze.pl
Other E-mails: jezewski@itam.zabrze.pl
Title of the Paper: The influence of Doppler ultrasound signal processing techniques on fetal heart rate variability measurements
Authors as they appear in the Paper: Janusz Wrobel, Janusz Jezewski, Dawid Roj, Tomasz Przybyla, Robert Czabanski, Adam Matonia
Email addresses of all the authors: januszw@itam.zabrze.pl, jezewski@itam.zabrze.pl
Number of paper pages: 9
Abstract: Estimation of the instantaneous variability of the fetal heart rate (FHR) is affected by the autocorrelation techniques commonly used in the Doppler ultrasound channel of today’s fetal monitors. Considerably decrease of short-term variability have been noted, which is quite surprising since as it has been shown earlier, the fetal monitors determine FHR signal with quite satisfying accuracy in relation to the reference direct fetal electrocardiography. The aim of this work was to recognize a source of errors caused by the commonly used approach. The results made possible to develop the method for correction of the indices quantitatively describing the FHR variability for a given type of fetal monitor. The proposed correction relies upon cancellation of the constant error component, which has been assigned to an averaging nature of the autocorrelation function. Although the random error component remaining after correction is still not too satisfactory conside!
ring the instantaneous values, a significant improvement of reliability of the fetal heart rate variability measurement was confirmed in case of a global one-hour trace assessment.
Keywords: Biomedical signal processing, Fetal heart rate variability, Fetal monitoring, Periodicity measurement
EXTENSION of the file: .pdf
Special (Invited) Session: Reducing influence of doppler ultrasound signal processing techniques on fetal heart rate variability
Organizer of the Session: 635-201
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