Correct Answer: B

Rationale: The highest source of calcium among the given choices is the 3 oz of canned salmon. This is due to the presence of bones in canned salmon, which are rich in calcium. The other options, including 1 cup of carrot strips, 1 plain baked potato, and 1 cup of chopped chicken breast, do not contain as much calcium due to the nature of their composition and lack of bone content.

Correct Answer: D

Rationale: A pulse oximeter is used to detect the oxygen saturation levels in arterial blood before the onset of hypoxemia symptoms. This device provides essential information about the effectiveness of oxygen transportation to the body's tissues. Choice A is incorrect because a pulse oximeter does not directly measure hemoglobin levels nor determine the need for a blood transfusion. Choice B is incorrect because a pulse oximeter is designed specifically to assess oxygen saturation, not tissue perfusion. Choice C is incorrect because a pulse oximeter is not used to measure the efficacy of anti-hypertensive medications, but rather to monitor oxygen levels in the blood.

Correct Answer: A

Rationale: In the context of blood administration, it's crucial for the nurse to stay with the client for the first 15 minutes. This is because most adverse reactions are likely to occur within this initial period. Monitoring the client closely during this time allows for immediate detection and response to any potential reactions. Choice B, staying with the client for the entire period of blood administration, is not typically feasible or necessary, although regular checks should be conducted. Running the infusion at a faster rate during the first 15 minutes (Choice C) is incorrect as this can actually increase the risk of adverse reactions. Informing the client to notify the staff immediately for any adverse reaction (Choice D) is an important practice, but it is not the most direct way for the nurse to monitor for adverse reactions.

Correct Answer: B

Rationale: The best choice for a pruritus (itching) patient is a colloidal (oatmeal) bath, as it is known for its soothing effect on itchy, irritated skin. Saline, water, and sodium bicarbonate baths may not provide the same level of relief for pruritus. The nursing care should involve comprehensive assessments and appropriate interventions to optimize patient outcomes. In this case, a colloidal bath is the most suitable intervention for a patient experiencing pruritus.

Correct Answer: D

Rationale: The correct answer is 'D: Risk for infection.' An indwelling urinary catheter poses a significant risk for infection due to its invasive nature and the increased susceptibility to urinary tract infections. While 'B: Impaired urinary elimination' and 'C: Impaired skin integrity' may also be concerns for a patient with an indwelling urinary catheter, the immediate risk of infection is the priority. 'A: Self-esteem disturbance' is not typically a priority nursing diagnosis for a patient with an indwelling urinary catheter because the focus is primarily on infection prevention and management to ensure patient safety and well-being.