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An automatic screening device for auscultatory evidence of heart disease was tested on 308 children and adolescents who had previously had rheumatic fever. The device correctly recognized as abnormal 88.5% of 131 patients with rheumatic heart disease (RHD), and correctly recognized as normal 83.6% of 177 patients with no RHD. For purposes of comparison a cardiologist, an internist, and a senior medical student each listened while blindfolded to the heart sounds of three 100-patient subsets of the above population. The auscultation was limited to the areas used for the automatic screening. They correctly recognized as abnormal 97.9%, 94.5%, and 91.9% of the patients with RHD, and correctly recognized as normal 81.1%, 84.4%, and 85.7% of the patients without RHD.
leri A, Taranta A, Spagnuolo M, Greenberg M. Auscultation of the Heart by Machine and by Physicians. JAMA. 1967;202(8):703–705. doi:10.1001/jama.1967.03130210077012
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