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Measuring Blood Pressure
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Stethoscope selection and use
  • A single tube scope vs. a dual tube scope has less chance of noise interference from the tubes banging together.
  • Longer stethoscope tubes decrease or soften the audible sounds.
  • The diaphragm (disc) of the stethoscope is best used for high-pitched sounds, and the bell (hollow cup) of the stethoscope is best used for low-pitched sounds. The Korotkoff sounds are accepted to be low-pitched sounds, and many authors recommend using the bell when assessing blood pressure. A diagram of a typical stethoscope is depicted to the right.
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Section: Measuring Blood Pressure
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