Phonocardiography in Preterm Newborns with Patent Ductus Arteriosus

Á.T. Balogh, F. Kovács, and Z. Molnár (Hungary)


Biomedical signal processing, clinical assessment and patient diagnosis, phonocardiography, patent ductus arteriosus, preterm newborns


This paper presents a pilot study investigating the useful ness of phonocardiography in assessing the hemodynamics of the patent ductus arteriosus (PDA) in preterm newborns. Nineteen infants have been examined, 11 with hemody namically significant PDA, verified by echocardiography. Four of these newborns have been measured every day until the clinically verified closure of the PDA occurred. Mur mur, related solely to PDA, was found in two infants but also some low frequency components of the heart sounds might indicate the state of the ductus arteriosus. Compari son of the heart sounds based on a cross-correlation method before and after the closure of the PDA is presented.

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