A nurse is assessing a client's vital signs. The oxygen saturation is 85%. What intervention should the nurse perform first?

Choice A reason: "Tell me about what medications you are taking." is not the most appropriate statement by the nurse, because it is not related to the psychosocial assessment. Medications are part of the physical or pharmacological assessment, which focuses on the type, dose, frequency, and effectiveness of the drugs that the client is taking for rheumatoid arthritis. Medications may have some psychosocial implications, such as side effects, costs, or adherence, but they are not the main focus of the psychosocial assessment.

Choice B reason: "What physical limitations are you experiencing?" is not the most appropriate statement by the nurse, because it is not related to the psychosocial assessment. Physical limitations are part of the functional or mobility assessment, which focuses on the range of motion, strength, endurance, and coordination of the joints and muscles that are affected by rheumatoid arthritis. Physical limitations may have some psychosocial implications, such as pain, disability, or dependence, but they are not the main focus of the psychosocial assessment.

Choice C reason: "How does this impact your role in your family?" is the most appropriate statement by the nurse, because it is related to the psychosocial assessment. Role in the family is part of the social or relational assessment, which focuses on the interactions, responsibilities, and expectations of the client and their family members in relation to rheumatoid arthritis. Role in the family may have significant psychosocial implications, such as role changes, role conflicts, role strain, or role loss, which can affect the client's selfesteem, identity, and coping.

Choice D reason: "What therapies are you using to reduce swelling?" is not the most appropriate statement by the nurse, because it is not related to the psychosocial assessment. Therapies are part of the physical or nonpharmacological assessment, which focuses on the modalities, techniques, or devices that the client is using to manage the symptoms of rheumatoid arthritis. Therapies may have some psychosocial implications, such as availability, accessibility, or preference, but they are not the main focus of the psychosocial assessment.

Choice A reason: A bone fragment has injured the nerve supply in the area is not the best response by the nurse. This may be a possible complication of a fracture, but it does not explain the mechanism of compartment syndrome. Compartment syndrome is a condition where the pressure within a closed space (such as a muscle compartment) exceeds the perfusion pressure and causes ischemia and necrosis of the tissues. A bone fragment may damage the nerve, but it does not cause increased pressure in the compartment.

Choice B reason: An injured artery causes impaired arterial perfusion through the compartment is not the best response by the nurse. This may be a possible cause of compartment syndrome, but it is not the most common one. Compartment syndrome is more often caused by venous obstruction than arterial obstruction. An injured artery may reduce the blood flow to the compartment, but it does not cause increased pressure in the compartment.

Choice C reason: Bleeding and swelling cause increased pressure in an area that cannot expand is the best response by the nurse. This is the most common cause of compartment syndrome and explains the pathophysiology of the condition. Bleeding and swelling are the result of inflammation and tissue injury that occur after a fracture. They increase the volume of fluid in the compartment, which cannot expand due to the rigid fascia that surrounds it. This leads to increased pressure in the compartment, which compresses the blood vessels, nerves, and muscles and causes ischemia and necrosis of the tissues.

Choice D reason: The fascia expands with injury, causing pressure on underlying nerves and muscles is not the best response by the nurse. This is not a correct statement, as the fascia does not expand with injury. The fascia is a tough connective tissue that encloses the muscle compartments and limits their expansion. The fascia is part of the problem, not the cause, of compartment syndrome. The fascia prevents the compartment from accommodating the increased volume of fluid and causes increased pressure in the compartment.