Final answer:
To reduce swelling in a resident's casted extremity, a Nursing Assistant should elevate it. This facilitates venous return and prevents fluid accumulation, aiding in quicker recovery.
Step-by-step explanation:
When caring for a resident who has a cast, the Nursing Assistant (NA) should elevate the extremity that is in a cast to stop swelling. Elevating the affected limb helps reduce swelling by enhancing venous return to the heart and reducing the accumulation of fluids at the site of the injury. It's essential to elevate the limb above the level of the heart, if possible, to achieve the best results.
Other options like lowering the extremity, double bandaging, or shaking are not appropriate for reducing swelling and can, in fact, worsen the condition or cause further harm to the patient. Proper cast care is crucial to the resident's recovery, and following correct procedures ensures the best outcomes.