Correct Answer: A

Rationale: The correct answer is A: Infection. After a splenectomy, the client is at risk for infection due to the spleen's role in the immune system. Without the spleen, the body's ability to fight infections is reduced. Infections can be serious and life-threatening. B: Urinary retention is not a typical complication of a splenectomy. C: Congestive heart failure is not directly related to a splenectomy. D: Viral hepatitis is not a common complication of a splenectomy.

Correct Answer: C

Rationale: The correct answer is C: Autonomy. Autonomy is the ethical principle that upholds an individual's right to make decisions about their own healthcare. In this scenario, the client is expressing her desire to not undergo surgery, which is her right as an autonomous individual. The nurse must respect her decision even if it goes against medical advice. Beneficence (A) is the ethical principle of doing good for the patient, but in this case, respecting the client's autonomy takes precedence. Advocacy (B) involves supporting the client's best interests, which could align with autonomy in this case. Justice (D) refers to fairness and equal treatment, but it is not directly applicable to the client's decision regarding surgery.

Correct Answer: C

Rationale: The correct answer is C: Lean red meats. Lean red meats are a rich source of heme iron, which is more easily absorbed by the body compared to non-heme iron found in plant-based foods. Heme iron helps improve iron levels more effectively in individuals with iron deficiency anemia. Fresh fruits (A) and dairy products (B) contain minimal iron, while breads and cereals (D) provide non-heme iron which is not as readily absorbed.

Correct Answer: B

Rationale: The correct answer is B: Aldosterone. Aldosterone is a hormone produced by the adrenal glands that helps regulate sodium and water balance in the body. It acts on the kidneys to increase reabsorption of sodium, leading to water retention and increased blood volume. This helps maintain blood pressure and electrolyte balance. A: Antidiuretic hormone (ADH) mainly acts on the kidneys to increase water reabsorption, not sodium retention. C: Thyroid hormone does not directly influence sodium retention. D: Insulin regulates blood sugar levels by promoting glucose uptake, it does not have a direct role in sodium retention.

Correct Answer: C

Rationale: Rationale: Parkinson's disease is characterized by dopamine deficiency in the brain, leading to motor symptoms like bradykinesia, rigidity, and tremors. Dopamine is crucial for controlling movement. Acetylcholine (A) is not directly related to Parkinson's symptoms. Serotonin (B) is involved in mood regulation, not movement control. Phenylalanine (D) is an amino acid and not directly related to Parkinson's pathology. Therefore, the correct answer is C.