In the oscillation technique, which action is performed?

• A. Apply long, steady compression
• B. Apply short, rapid, incomplete compressions
• C. Release pressure quickly after full occlusion
• D. Apply circular rubbing

Answer: (B)

Oscillation technique uses brief, rapid, incomplete compressions with the transducer to create small, controlled tissue oscillations. These quick bursts deform the tissue transiently without fully occluding vessels, allowing you to observe how structures respond to minor deformation and to detect subtle borders or movements that help differentiate tissue types or confirm a vascular pulse with Doppler. That is why applying short, rapid, incomplete compressions is the action performed.

Long, steady compression tends to flatten or occlude structures and hide the oscillatory response. Releasing pressure quickly after full occlusion isn’t about producing oscillations, and circular rubbing isn’t part of this technique.