Heart murmurs are the first signs of cardiac valve disorders. Several studies have been conducted in recent years to automatically differentiate normal heart sounds, from heart sounds with murmurs using various types of audio features. Entropy was successfully used as a feature to distinguish different heart sounds. In this paper, new entropy was introduced to analyze heart sounds and the feasi...

Heart murmurs are typically detected in newborns, in many cases due to the patent ductus arteriosus condition. Hence, providing an automatic tool for heart sound analysis can be helpful to physicians in the diagnosis of heart murmurs in newborns. In this paper we propose a novel method that performs segmentation and feature extraction, aimed at separating heart sound signals in two parts: innoc...

Murmurs arise when blood flow becomes turbulent, causing vibration of cardiovascular structures. Physiological murmurs or functional murmurs result from turbulent flow associated with normal blood flows at high velocity. Pathological murmurs are caused by a pathological condition such as valvular regurgitation or congenital cardiac disease. When a murmur is diagnosed, we first need to identify ...

OBJECTIVE To determine if heart murmur intensity grading performance can be improved using the heart sounds as an internal reference. METHODS Single-blind controlled trial of 100 medical students, residents, and pediatric attending physicians at a children's hospital. Groups of 1 to 3 participants were alternately assigned to intervention and control groups, reported their method of grading h...

BACKGROUND Heart murmurs are common in children, and they are often referred to a specialist for examination. A clinically innocent murmur does not need further investigation. The referral area of the University Hospital is large and sparsely populated. A new service for remote auscultation (telemedicine) of heart murmurs in children was established where heart sounds and short texts were sent ...

The phonocardiograms (PCGs), recording of heart sounds, have many advantages over traditional auscultation in that they may be replayed and analyzed for spectral and frequency information. PCG is not a widely used diagnostic tool as it could be. One of the major problems with PCG is noise corruption. Many sources of noise may pollute a PCG signal including lung and breath sounds, environmental ...

A breeding program with the aim of reducing the prevalence of mitral regurgitation (MR) caused by myxomatous mitral valve disease (MMVD) in Cavalier King Charles Spaniels (CKCS) is currently ongoing in Sweden. In this investigation 353 CKCS were selected as a sample of the population and 150 were examined by auscultation for heart murmurs when they reached the age of six years in 2007 and 2009....