Correct Answer: A

Rationale: The correct answer is A: Hair loss. Radiation therapy targets fast-growing cancer cells, which can also affect healthy cells such as those in hair follicles, leading to hair loss. This adverse effect occurs commonly with radiation therapy due to its impact on rapidly dividing cells. Hair loss is a well-known side effect that clients undergoing radiation therapy are often prepared for. The other choices, B: Fatigue, C: Stomatitis, and D: Vomiting, are also potential side effects of radiation therapy, but hair loss is specifically associated with radiation treatment due to its effect on hair follicles. Fatigue is a common side effect of cancer treatment in general, stomatitis is more commonly associated with chemotherapy, and vomiting can be a side effect of radiation but is not as directly linked as hair loss.

Correct Answer: A

Rationale: Step-by-step rationale: 1. The nurse should clarify discrepancies of assessment data with the client to ensure accurate information. 2. The client's denial of breathing problems conflicts with physical signs, indicating a potential lack of awareness or reluctance to disclose symptoms. 3. By clarifying with the client, the nurse can address any misunderstandings or encourage honest communication. 4. This approach promotes client-centered care and ensures a comprehensive understanding of the client's health status. Summary: - Choice A is correct as it addresses the need to clarify discrepancies with the client for accurate assessment. - Choice B is incorrect as validation with the healthcare team may not provide insight into the client's perception. - Choice C is incorrect as it does not address the need to resolve conflicting assessment data. - Choice D is incorrect as family input may not provide accurate information if the client denies symptoms.

Correct Answer: B

Rationale: The correct answer is B because starting birth control pills does not protect against HIV transmission to the baby during pregnancy. The other choices demonstrate understanding of HIV transmission risks and prevention methods. A shows awareness of vertical transmission, C recognizes that not all babies born to HIV-positive mothers are infected, and D acknowledges the potential need for a C-section to reduce transmission risk. Starting birth control pills is unrelated to preventing mother-to-child HIV transmission during pregnancy.

Correct Answer: B

Rationale: The correct answer is B (AB). AB blood type is the rarest because it is a result of inheriting both A and B alleles, making it less common in the population. AB individuals can only receive blood from other AB individuals due to their unique antigens. Blood types A, B, and O are more common in the population, with O being the most common as it is the universal donor. Blood type A and B are more common than AB since they only require one allele for their respective antigens. Thus, the rarity of AB blood type is due to the inheritance of both A and B alleles, making it the least common among the choices provided.

Correct Answer: B

Rationale: The correct answer is B because hyperkalemia presents with symptoms such as muscle weakness, diarrhea, and ECG changes. Muscle weakness is a common sign due to potassium's effect on neuromuscular function. Diarrhea can lead to potassium loss. ECG changes, such as peaked T waves and widened QRS complexes, indicate cardiac involvement. Assessing for these symptoms helps monitor the severity of hyperkalemia and guide treatment. Other choices are incorrect because assessing for fever and chest pain (choice A) are not specific to hyperkalemia. Encouraging fluid restriction (choice C) may not directly address hyperkalemia. Preparing for a cardiac ultrasound (choice D) is not an immediate intervention for hyperkalemia.