Valvular heart disease (VHD) is a potentially fatal condition, yet it's difficult to diagnose with a regular stethoscope. A ...

University of Cambridge researchers have developed an instrument for detecting certain types of heart disease.

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Stethoscopes used by doctors consist of a chest piece, rubber tubes and earpieces. The chest piece has a diaphragm and bell, which amplify the sound of the heart beating so the doctor can hear it.