A nurse is teaching the partner of a client who had an acute myocardial infarction (MI) about the reason blood was drawn from the client. Which of the following statements should the nurse make regarding cardiac enzyme studies?

Impaired tissue perfusion is a nursing diagnosis that indicates a decrease in oxygen and nutrient delivery to the tissues, resulting in cellular dysfunction and potential tissue damage or necrosis. It is the priority nursing diagnosis for a client who has varicose veins with ulcerations and lower extremity edema, as these are signs of chronic venous insufficiency, which is a condition in which the veins in the legs fail to return blood to the heart effectively, causing blood to pool and stagnate in the lower extremities. This leads to increased venous pressure, inflammation, and impaired wound healing, which can cause skin breakdown, infection, and tissue necrosis. The nurse should monitor the client's vital signs, peripheral pulses, capillary refill, skin color, temperature, and sensation, and implement interventions to improve venous return and prevent further complications, such as elevating the legs, applying compression stockings, encouraging ambulation, administering medications, and providing wound care.

Alteration in body image. This is a nursing diagnosis that indicates a negative perception or dissatisfaction with one's physical appearance or function. It may be applicable for a client who has varicose veins with ulcerations and lower extremity edema, as these may affect their self-esteem and social interactions. However, it is not the priority nursing diagnosis for this client, as it does not pose an immediate threat to their health or safety.

Alteration in activity tolerance. This is a nursing diagnosis that indicates a decrease in the ability to perform physical activities without experiencing fatigue, dyspnea, or other symptoms. It may be applicable for a client who has varicose veins with ulcerations and lower extremity edema, as these may limit their mobility and endurance. However, it is not the priority nursing diagnosis for this client, as it does not pose an immediate threat to their health or safety.

Impaired skin integrity. This is a nursing diagnosis that indicates a disruption or damage to the epidermis or dermis layers of the skin. It is applicable for a client who has varicose veins with ulcerations and lower extremity edema, as these can cause skin breakdown and infection. However, it is not the priority nursing diagnosis for this client, as it is a consequence of impaired tissue perfusion, which is the underlying problem that needs to be addressed first.

Planning to slow down if tired the day after exercising is a statement that indicates the client understands the importance of pacing activities and avoiding overexertion, which can worsen heart failure symptoms.

a. "I should use naproxen to manage discomfort." is not correct, as naproxen is a nonsteroidal anti-inflammatory drug (NSAID) that can cause fluid retention, increase blood pressure, and worsen heart failure. The client should avoid NSAIDs and use other analgesics, such as acetaminophen, unless contraindicated.

c. "I will read food labels and limit my sodium to 4 grams per day." is not appropriate, as 4 grams of sodium per day is too high for a client who has congestive heart failure. The client should limit sodium intake to 2 grams or less per day, as sodium can cause fluid retention and increase the workload of the heart.

d. "I will take my diuretic before sleep and drink fluids during the day." is not advisable, as taking a diuretic before sleep can cause nocturia and disrupt the sleep cycle, which can affect the quality of life and cardiac function. The