Intermediate Lung Sounds
Crackles - Early Inspiratory (Rales)

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phonocardiogram

torso with stethoscope chestpiece
chestpiece
maneuver
Maneuver:Sitting
Position:Chest wall
Chestpiece:Diaphragm

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.