The purpose of chest percussion and vibration is to loosen secretions in the lungs. The difference between the procedures is:
- Percussion delivers cushioned blows to the chest with cupped palms while vibration gently shakes secretion loose on the exhalation cycle
- In both percussion and vibration the hands are on top of each other and hand action is in tune with clients breath rhythm
- Percussion slaps the chest to loosen secretions while vibration shakes the secretions along with the inhalation of air
- Percussion uses only one hand while vibration uses both hands
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