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Crackles - Early Inspiratory (Rales) - Aus

Early inspiratory crackles (rales), as suggested by the title, begin and end during the early part of inspiration. The pitch is lower than late inspiratory crackles. A patient's cough may decrease or clear these lung sounds. Early inspiratory crackles suggest decreased FEV1 capacity and are characteristic of COPD.


patient torso with stethoscope chestpiece
patient position during auscultation
The patient's position should be sitting.

static waveform for 147


static waveform for 147

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