Final answer:
When repositioning an immobile client, the nurse should perform a blanching test to assess for blanching. This helps determine if increased redness is due to hyperemia or impaired circulation.
Step-by-step explanation:
When repositioning an immobile client, the nurse may observe an area of hyperemia, which refers to increased blood flow resulting in redness of the skin. To assess for blanching, the nurse should perform a simple test called the blanching test. This involves applying pressure to the hyperemic area and observing whether the redness fades or blanches under the pressure. If the area blanches and the color quickly returns after pressure is released, it indicates that the increased blood flow is due to hyperemia. However, if the area does not blanch or takes a long time to return to its original color, it suggests impaired circulation or tissue damage.