Auscultation Training by Repetition

Crackles - Fine (Rales)

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Seated

Diaphragm

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Rales are brief, discontinuous, popping sounds that are high-pitched. Similar to wood burning in a fireplace. More commonly heard during inspiration.

Repetition Training - Basic Lung Sounds

Table of Contents

1	Crackles - Fine (Rales)	72
2	Crackles - Coarse (Rales)	73
3	Wheeze	71
4	Rhonchi - Low Pitched Wheezes	75
5	Bronchial	76
6	Pleural Rubs	77

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Lesson Text

Fine crackles are brief, discontinuous, popping lung sounds that are high-pitched. Fine crackles are also similar to the sound of wood burning in a fireplace, or hook and loop fasteners being pulled apart or cellophane being crumpled.

Crackles, previously termed rales, can be heard in both phases of respiration. Early inspiratory and expiratory crackles are the hallmark of chronic bronchitis. Late inspiratory crackles may mean pneumonia, CHF, or atelectasis.

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soundID	50
maneuver	Seated
Title	Crackles - Fine (Rales)
Position	Anterior-3L
realSoundID	6102
caseID	72
S1
Systole
S2
Diastole
features	Rales are brief, discontinuous, popping sounds that are high-pitched. Similar to wood burning in a fireplace. More commonly heard during inspiration
lung sounds	True
chestpiece	Diaphragm