Correct Answer: A

Rationale: Patients with chronic renal failure should avoid potassium due to impaired kidney function. The kidneys play a crucial role in regulating potassium levels in the body. In renal failure, the kidneys may not be able to excrete excess potassium effectively, leading to hyperkalemia. Calcium, iron, and zinc are not typically restricted in chronic renal failure unless there are specific individual circumstances, making them incorrect choices.

Correct Answer: A

Rationale: The correct answer is A: Simple carbohydrates. Simple carbohydrates can cause rapid spikes in blood glucose levels, which can be problematic for patients with diabetes. These carbohydrates are quickly broken down and absorbed by the body, leading to sharp increases in blood sugar levels. In contrast, complex carbohydrates and fiber-rich carbohydrates are generally better choices for individuals with diabetes because they are digested more slowly, resulting in a more gradual rise in blood glucose levels. Choice B, complex carbohydrates, are a better option for diabetic patients compared to simple carbohydrates. Choice C, fiber-rich carbohydrates, can also be beneficial for individuals with diabetes as they help in regulating blood sugar levels. Choice D, all carbohydrates, is too broad of a statement as not all carbohydrates have the same impact on blood glucose levels.

Correct Answer: A

Rationale: The correct response is to assess the intravenous fluids for rate and volume. In this situation, the client is seeking guidance on fertility issues, not related to intravenous fluids, surgical dressing changes, medication levels, or meal monitoring. The nurse should provide supportive and empathetic guidance, suggesting further options like consulting fertility specialists or exploring additional treatments.

Correct Answer: D

Rationale: When palpating the client's neck for lymphadenopathy, the nurse should position himself in front of a sitting client. This positioning allows for easier access to the neck area and better visualization of any swelling or abnormalities in the lymph nodes. Being in front of the client ensures proper alignment and comfort for both the nurse and the client during the assessment. Choices A, B, and C are incorrect because positioning at the client's back or sides would make it challenging to adequately palpate the neck area and assess for lymphadenopathy.

Correct Answer: B

Rationale: The correct answer is B. The combat health support system in the field is designed to project, sustain, and protect the health of soldiers in both war and operations other than war. Choice A is incorrect because the system is not primarily focused on providing evacuation to the far rear for treatment, but rather on overall health support. Choice C is incorrect as it only mentions rearward evacuation and reassignment, which is a limited scope compared to the comprehensive support provided by the system. Choice D is incorrect as it narrowly focuses on far rear area care and delayed return to duty, missing the broader aspects of health support and protection.