Continuous ambulatory optimization of atrioventricular (AV) delay for cardiac resynchronization therapy (CRT) is mainly performed by electrical means. Development an estimation model function that uses a piezoelectric transducer embedded in internal pulse generator to guide CRT patients. Electrocardiogram, left ventricular pressure (LVP) and heart sounds were simultaneously collected during the...

THE importance of early detection of unrecognized heart disease in school children has been adequately emphasized and various technics of screening the school-age child have been suggested and attempted.'-6 Comparisons of results have been difficult because of a lack of true prevalence rates among the populations examined.1 2, 4, 7 Most recently a mass field trial of screening for heart disease...

Duplication of the second heart sound at the apex, especially when this is associated with a systolic murmur, is apt to be regarded by recruiting medical boards as evidence of an organic mitral lesion. The purpose of this paper is to suggest that this sign is physiological, and to put forward a hypothesis to account for it and for certain other signs that are apt to lead to a mistaken diagnosis...

In this paper we propose an efficient method for S4 heart sound segmentation based on the Matching Pursuit algorithm and Gabor Dicitonaries. An evaluation of this algorithm, through the use of different cardiac cycle events for S4 heart sound signals, showed a high performance, achieving a detection rate of 100% with the use of Gabor dictionary. The proposed method is practical, thus making it ...