The 9th International Symposium on ADVANCED TOPICS IN ELECTRICAL ENGINEERING 2015

Papers Proceedings »

Fetal heart rate estimation from phonocardiograms using an EMD based method

Fetal monitoring is essential for evaluating the health status of the fetus during pregnancy. Long term fetal screening is recommended to reach a precise diagnostic. Acoustic noninvasive measurements of the fetal heart sounds by placing sensors on the maternal abdomen represent an attractive alternative to the standard cardiotocography procedure used nowadays in hospitals, but the main problem is that these acoustic measurements are heavily corrupted by different types of noises, advanced signal processing methods being necessary for estimation of the fetal heart rate (fHR) from fetal phonocardiograms (fPCG). In this paper, a new method for fHR extraction is proposed having the following blocks: an EMD based block used to suppress the noise contaminating the fPCG; a block that enhances of the first heart sound (S1), a logic block that estimates the position of S1 based on rules concerning the fetal heart and a block which estimate the fHR. The proposed algorithm is validated on simulated fPCG, showing a very high accuracy in locating the S1 and estimating the fHR.

Author(s):

Dragos Daniel Taralunga    
Politehnica University of Bucharest
Romania

Bogdan Hurezeanu    
Politehnica University of Bucharest
Romania

Mihaela Ungureanu    
Politehnica University of Bucharest
Romania

Rodica Strungaru    
Politehnica University of Bucharest
Romania

 

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