Final answer:
The nurse must intervene on observation B, where the patient lying on the right side after a liver biopsy is not positioned properly with pressure applied to the site of the biopsy. The client should have a small pillow placed under the puncture site to prevent bleeding.
Step-by-step explanation:
Among the observations made by the nurse regarding the care provided by the unlicensed assistive personnel (UAP), option B would require an intervention. After a liver biopsy, it is critical to position the client in such a way as to prevent bleeding and apply pressure to the biopsy site. A patient should be placed on the right side, with a small pillow under the puncture site to apply pressure and minimize the risk of bleeding, not just under the head and neck. This oversight could lead to post-procedural complications such as hemorrhage, which the nurse must address immediately.
Option A does not require intervention because elevating the head of the bed 60 degrees and placing a small pillow under the thighs can aid breathing in a patient with shortness of breath. Option C is appropriate for a client with hemiplegia as lying prone can promote drainage from the mouth and prevent aspiration. Lastly, option D is a safe positioning for a client with a sacral pressure injury as it relieves pressure on the affected area.