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Stethoscope and clinical auscultation

Identify the instrument and explain systematic, consented cardiovascular and respiratory auscultation.

REFERENCE GALLERY1 / 1 reference
Stethoscope — reference view
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Earpieces

Earpieces: located on the reference instrument. Compare its shape and position with the apparatus used in your practical.

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Stethoscope — reference view

Image: HujiStat · Source / original · Public domain

Resized and converted to WebP; original colours retained.

Stethoscope and clinical auscultation

Identify and explain

A chestpiece couples mechanical sound vibrations through the tubing to the examiner’s ears.

  • Paired earpieces connected to flexible tubing
  • Chestpiece placed over the examination area
  • Many models have a diaphragm and a bell or a tunable diaphragm
1

Identify the reference

Paired earpieces connected to flexible tubing. Chestpiece placed over the examination area. Many models have a diaphragm and a bell or a tunable diaphragm

2

Explain the measurement

A chestpiece couples mechanical sound vibrations through the tubing to the examiner’s ears.

3

Interpret in context

A sound must be described in its clinical setting. The instrument alone does not establish the diagnosis.

At the viva table

Try answering aloud, then open the suggested answer. Examiner questions vary.

01 / What sounds are heard during manual BP measurement?

Korotkoff sounds over the brachial artery, not the normal heart sounds.

02 / How do bell and diaphragm differ?

In a conventional design, the bell favours low-frequency sounds with light contact and the diaphragm is useful for higher-frequency sounds. Tunable designs depend on contact pressure.

03 / Why should the eartips fit?

A suitable acoustic seal improves transmission and reduces surrounding noise.

04 / What common artefact occurs during examination?

Tubing movement or contact with clothing can generate misleading noise.

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