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Auscultation Repetition Training: 147.

Crackles - Early 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:Occur early in inspiration. Can be lower pitched than late inspiratory crackles. Coughing may decrease or clear these crackles
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