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Auscultation Repetition Training: 148.

Crackles - Late Inspiratory (Rales)

For best results from repetition training, listen for 2-3 minutes.

auscultation sound from lesson
waveform


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
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