threshold percussion


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thresh·old per·cus·sion

percussion effected by means of a glass rod as a plessimeter, with the rod inclined to the wall of the chest or abdomen and touching it only by one extremity.

threshold percussion

Percussing lightly with the fingers on a glass-rod pleximeter, the far end of which is covered with a rubber cap. The cap is usually placed on an intercostal space. This technique is used to confine the percussion to a very small area.
See also: percussion