Detecting the temporal extent of the impulse response function from intra-partum cardiotocography for normal and hypoxic fetuses

Author

Warrick, Philip A. ; Hamilton, Emily F. ; Precup, Doina ; Kearney, Robert E.

Author_Institution

Biomedical Engineering Department, McGill University, Montreal, Quebec, Canada

fYear

2008

fDate

20-25 Aug. 2008

Firstpage

2797

Lastpage

2800

Abstract

Recording of maternal uterine pressure (UP) and fetal heart rate (FHR) during labour and delivery is a procedure referred to as cardiotocography (CTG). We model this as an input-output system using a nonparametric approach to estimate its dynamics in terms of an impulse response function (IRF). In this paper, we incorporate IRF delay and memory detection into our identification methods to estimate the temporal extent of the IRF as well as its dynamics. Our models showed that pathological cases had stronger, later and more predictable responses.

Keywords

Abdomen; Cardiography; Databases; Delay estimation; Fetal heart rate; Heart rate detection; Pathology; Predictive models; Pregnancy; Probes; Algorithms; Anoxia; Cardiotocography; Databases, Factual; Diagnosis, Computer-Assisted; Female; Fetal Growth Retardation; Fetal Monitoring; Fetal Movement; Heart Rate; Heart Rate, Fetal; Humans; Pregnancy; Reproducibility of Results; Time Factors;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE

Conference_Location

Vancouver, BC

ISSN

1557-170X

Print_ISBN

978-1-4244-1814-5

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2008.4649783

Filename

4649783