The genesis of gallop sounds was investigated in 12 patients by simultaneous measurement of external apexcardiographic (ACG) and left ventricular (LV) pressure, dP/dt, and sound using infinite time constant piezo-resistive pressure transducers with identical sensitivity and frequency responses. Absolute intensity of internal and external sound was quantified. The external transducer was applied...

Cardiac auscultation is the examination of heart by listening to sound produced through a stethoscope. Heart sounds can provide information about functioning valve condition as well structural abnormalities heart. However, it needs intensive training for mastering. The objective work was develop an algorithm signal classification applied computer-assisted digital in order identify pathological ...

⎯Objective of this investigation is to further analyze the cardiac function status change by phonocardiogram during mixed anesthesia which is conducted by midazolam, skelaxin, fentanyi and propofol. The results show that blood pressure, heart rate, amplitude of R wave and T wave, amplitude of first heart sound (S1) and second heart sound (S2) about 37 subjects after anesthesia decrease compared...

Classification of heart sound signals to normal or their classes of disease are very important in screening and diagnosis system since various applications and devices that fulfilling this purpose are rapidly design and developed these days. This paper states and alternative method in improving classification accuracy of heart sound signals. Standard and improvised Multi-Layer Perceptron (MLP) ...

Enlarged Adenoids is a disease which results in the blockage of air passage of infants. These babies who are infected with adenoids will produce high snoring sounds while they sleep. For children suffering from adenoid, it‟s a heart breaking scene for a parent to see their small innocent baby could sleep only in a sitting position. The sound of snore produced by such babies is too loud, that it...