Zeljko Roncevic

Work place: University Clinical Hospital Mostar, Clinic for Children’s Diseases, Cardiology Department, Bijeli brijeg bb, 88000, Mostar, Bosnia and Herzegovina

E-mail: zroncevic112@gmail.com


Research Interests: Medicine, Medicine & Healthcare


Zeljko Roncevic became MD at University of Sarajevo, Medical School. He receives MSc and PhD degrees at University of Mostar School of Medicine. From 1989 to 2017 he worked at University Hospital Mostar, Bosnia and Herzegovina as a head of Pediatric Cardiology Department. He is Asisstant Profesor of Pediatrics at University of Mostar School of Medicine. His research areas are Pediatric deseases, Pediatric Cardiology, Heart Murmurs in children and Modern technologies in medicine.

Author Articles
Graphic Representations and Frequency Parameters of Heart Sound Signals

By Bozo Tomas Darko Zelenika Zeljko Roncevic

DOI: https://doi.org/10.5815/ijigsp.2018.07.04, Pub. Date: 8 Jul. 2018

Sounds produced by acoustic activity of the heart are series (sequences) of quasi-periodic events which are repeated throughout life, one period (cycle) of these events lasts less than one second. The advancements in technology have enabled us to create various tools for audio and graphic representations of these events. Physicians, by using such tools, can more accurately determine diagnosis by interpretation of heart sound and/or by visual interpretation of graphic displays of heart sounds. This paper presents frequency parameters and graphic illustrations of heart sound signals for two groups of heart murmurs: innocent Still’s murmur and pathologic heart murmur of Ventricular Septal Defect (VSD). Also, on behalf of the frequency analysis of acoustic cardiac signals with Still’s murmur was given a medical explanation of cause and origin of Still’s murmur.

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