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.

After reviewing the sound, use the waveform and anatomy tabs for more information about this sound.

Crackles - Early Inspiratory (Rales)
Position: Chest wall
Maneuver: Sitting
Chestpiece: Diaphragm