Characterization of fetal heart rate irregularity using approximate entropy and wavelet filtering

• Type: Article in International Conference Proceedings Book
• Date: 2006

Authors

Magalhaes, F (Author) Other; Marques De Sa, JP (Author) Other; Joao Bernardes (Author) FMUP; Diogo Ayres de Campos (Author) FMUP

Conference proceedings International

Title: Computers in Cardiology

Pages: 933-936

2006 Computers in Cardiology, CIC

Valencia, 17 September 2006 through 20 September 2006

Indexing

Scopus - 7 Citations

Other information

Authenticus ID: P-007-N0V

Abstract (EN): Approximate Entropy (ApEn) has been used by several researchers as a means to characterize the irregularity of fetal heart rate (FHR), a major contributor to fetal risk assessment. The present work starts by analyzing the influence of accelerative and decelerative (AD) components of the FHR signal in the computation of ApEn. Having shown that the AD components may completely distort the ApEn evaluation we proceed to present two methods of eliminating the influence of the AD components: wavelet filtering; AD detection using specific algorithms based on well-established physiological criteria. We obtained good results with the first method when applied to simulated signals; however it proved unreliable in the practical application of discriminating normal from pathological fetal FHR. With the second method we were able to achieve this discrimination with high statistical significance.

Language: English

Type (Professor's evaluation): Scientific