When caring for a client at the end of life who is experiencing shortness of breath and noisy respirations, which action should the nurse take?

Turning the client every 2 hours is appropriate in this context as it can help to alleviate discomfort associated with shortness of breath and can improve respiratory function. Positioning the client in a way that allows for better lung expansion, such as elevating the head of the bed or turning them to one side, can facilitate easier breathing. Frequent repositioning also helps to prevent pressure ulcers, which is particularly important for clients at the end of life who may have reduced mobility.

The other options do not address the client's current primary concerns. Administering an antiemetic every 6 hours would be relevant if the client were experiencing nausea; however, it does not directly relate to the management of shortness of breath. Holding oral care may lead to discomfort, as maintaining oral hygiene can be important for overall comfort, even at the end of life. Increasing the room's temperature may not provide relief for respiratory distress; rather, a cooler environment may be more soothing and helpful for someone experiencing difficulty breathing.