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Crackles - Late Inspiratory (Rales) G

Crackles - Late Inspiratory (Rales)

Late inspiratory crackles (rales) begin in late inspiration and increase in intensity. They are normally higher pitched and can vary in loudness. These adventitious breath sounds resemble the noise made when hook and loop fasteners are being separated. These sounds are heard over posterior bases of the lungs. They may clear with changes in posture or several deep breaths. They do not clear with coughing.


Patient Recording

patient heart or lung sound
Crackles - Late Inspiratory (Rales)


Patient Recording - Half Speed Playback

patient heart or lung sound
Crackles - Late Inspiratory (Rales)




Position

Patient position
The patient's position should be sitting.

Listening Tips

S1:
Systole:
S2:
Diastole:
Features:Crackles begin in late inspiration and increase. High pitched, variable loudness. Best heard over posterior bases of the lungs. Do not usually clear with coughing
Crackles - Late Inspiratory (Rales)

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