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Computer-aided auscultation : ウィキペディア英語版 | Computer-aided auscultation Computer-aided auscultation (CAA) is a clinical decision support system, which is designed to assist physicians and other health professionals with decision making tasks when assessing a heart murmur. The need for computer-aided auscultation is increasing as the auscultation skills of physicians are declining. More than half of the number of babies with undiagnosed congenital heart defects, which comes to light in infancy, are missed by routine neonatal examination and more than one third by the 6 week examination. In many cases the referral of paediatric patients to paediatric cardiologist are subjective and more than 60% of the referrals are due to an innocent or functional murmur. A computer-aided auscultation clinical decision support uses an electronic stethoscope to record the acoustic heart sound and acoustic signal processing algorithms; and a computer to analyze the recording to identify specific heart sounds that may be present, including S1, S2 and suspected murmurs. A graphic user interface displays the results. == Auscultation and heart defects== Heart defects are a major cause of worldwide morbidity and mortality. Properly performed, the cardiac auscultatory examination is an inexpensive, widely available tool in the detection and management of heart disease. Unfortunately, accurate interpretation of heart sounds by primary care providers is fraught with error, leading to missed diagnosis of disease and/or excessive costs associated with evaluation of normal variants. Thus, automated heart sound analysis, also known as computer aided auscultation (CAA), has the potential to become a cost-effective screening and diagnostic tool in the primary care setting.
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