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February 1942

Stethoscopic Heart Records.

Arch Intern Med (Chic). 1942;69(2):368. doi:10.1001/archinte.1942.00200140206016

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These phonograph records contain an assortment of normal and abnormal heart sounds. Preceding each illustration, a voice explains the sound which is to be heard and its significance. Normal heart tones, arrhythmias, reduplications and many varieties of murmurs are reproduced. Although it is possible to listen with any degree of amplification, the instructions advise that the listener insert the ear pieces of his stethoscope in his ears and reduce the volume of the spoken voice to a point where it can just be heard distinctly. Unless this is carried out, faithful reproduction cannot be assured. This feature limits the use for large classroom instruction. The records should, however, be of some value to small study groups or to small sections in physical diagnosis.

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