What is the difference between double tube and single tube stethoscope?
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A dual chest piece stethoscope has the diaphragm on one side and the bell on the other. Single lumen means that there is one tube connected to the chest piece, which then splits into two tubes, with each one going into one ear. ... Double lumen stethoscopes are more sensitive than single lumen stethoscopes.
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The difference between a single-tube and a double-tube stethoscope is the capacity of the tube to displace air. Double-tube stethoscopes have a double internal lumen and can displace more pressure. In older models (for example, the Rappaport stethoscope), two separate tubes were often used. Nowadays everything can be neatly accommodated in one tube
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