UNLABELLED Objective : Esophageal stethoscope has the advantage of being non-invasive, easily placed and capability to monitor the heart sound. This study was designed to determine whether the ratio of S1 to S2 analyzed by esophageal stethoscope and wireless bluetooth transmission can be accurate indicator that express the correlation with blood pressure. METHODS Total 33 adult male and femal...

Valve sounds are mostly a result of heart valves opening and closing. Laminar blood flow is interrupted abruptly transforms into turbulent flow, causing some sounds, explained by improper valve operation. It has been feasible to demonstrate that the typical compulsive instances different for both chronological spatial aspects through examination phono-cardiographic signals. The current work pre...

Acoustic heart signals, generated by the mechanical processes of the cardiac cycle, carry significant information about the underlying functioning of the cardiovascular system.We describe a computational analysis framework for identifying distinct morphologies of heart sounds and classifying them into physiological states. The analysis framework is based on hierarchical clustering, compact data...

nary artery disease; 37 did not. Abnormal graphic studies were found in 42 patients with coronary artery disease and three patients with normal coronary arteriograms. These abnormalities correlated well with the presence of elevated left ventricular enddiastolic pressure. Third heart sounds were found less frequently than fourth heart sounds and/or abnormal apexcardiographic a waves, but when p...

The work presented here applies deep learning to the task of automated cardiac auscultation, i.e. recognizing abnormalities in heart sounds. We describe an automated heart sound classification algorithm that combines the use of time-frequency heat map representations with a deep convolutional neural network (CNN). Given the cost-sensitive nature of misclassification, our CNN architecture is tra...

BACKGROUND The preferential response to mother's voice in the fetus and term newborn is well documented. However, the response of preterm neonates is not well understood and more difficult to interpret due to the intensive clinical care and range of medical complications. AIM This study examined the physiological response to maternal sounds and its sustainability in the first month of life in...

A method to trigger multigated blood-pool (MGBP) acquisition using both the first and second heart sound has been developed. The heart sound gating (HSG) circuitry identifies, individually, both the first (S1) and second (S2) heart sounds from their timing relationship alone, and provides two trigger points during the cardiac cycle. First heart sound gating may be performed to assess the systol...

The future of quick and efficient disease diagnosis lays in the development of reliable non-invasive methods. As for the cardiac diseases - one of the major causes of death around the globe - a concept of an electronic stethoscope equipped with an automatic heart tone identification system appears to be the best solution. Thanks to the advancement in technology, the quality of phonocardiography...

Ikram, H., Banim, S. O., and Makey, A. R. (1974). Thorax, 29, 204-208. Clinical features of non-tuberculous constrictive pericarditis. This paper describes the clinical features of five cases of constrictive pericarditis of non-tuberculous aetiology. The findings in this syndrome are compared with those in tuberculous constrictive pericarditis. The non-tuberculous variety had a short history, a...