At the end of the shift, the nurse clears the PCA and discovers that the client has used only a…

At the end of the shift, the nurse clears the PCA and discovers that the client has used only a small amount of medication. Which intervention should the nurse implement? 1. Determine why the client is not using the PCA. 2. Document the amount and take no action. 3. Chart that the client is not having pain. 4. Contact the HCP and request oral medication.