The nurse understands that the client with pernicious anemia will have which distinguishing laboratory findings?

Correct Answer: B

Rationale: The correct answer is B because pernicious anemia is typically caused by the absence of intrinsic factor, a protein necessary for the absorption of vitamin B12. Without intrinsic factor, the body cannot properly absorb vitamin B12, leading to anemia. The other choices are incorrect because: A: Schilling's test is used to diagnose pernicious anemia, but an elevated result is not a distinguishing laboratory finding. C: Sedimentation rate is a nonspecific test for inflammation and is not specific to pernicious anemia. D: RBC count of 5.0 million is within the normal range and is not a distinguishing feature of pernicious anemia.

Correct Answer: D

Rationale: The correct answer is D because anemia reduces the number of red blood cells, leading to decreased oxygen delivery to tissues, causing fatigue. The nurse's response highlights the underlying issue of inadequate oxygen supply due to anemia. Choice A focuses on sleep duration, which is not directly related to anemia. Choice B mentions iron deficiency, a common cause of anemia, but it does not address the specific issue of oxygen delivery. Choice C suggests rest for sickness, not addressing the chronic fatigue associated with anemia. Thus, the correct answer D provides a clear and logical explanation for the client's tiredness.

Correct Answer: A

Rationale: The correct answer is A: MCH (Mean Corpuscular Hemoglobin). MCH represents the average weight of hemoglobin per red blood cell. The normal range is 27-33 pg. MCV (Mean Corpuscular Volume) measures the average volume of RBCs, not the weight of hemoglobin. MCHC (Mean Corpuscular Hemoglobin Concentration) measures the concentration of hemoglobin in a given volume of packed red blood cells, not the weight of hemoglobin. RDW (Red Cell Distribution Width) measures the variation in RBC size, not the weight of hemoglobin. Therefore, A is correct as it directly relates to the average weight of hemoglobin per red blood cell.

Correct Answer: A

Rationale: Step-by-step rationale: 1. Wilson's disease is a genetic disorder that causes copper to accumulate in the liver. 2. The excess copper can lead to liver damage and various liver problems. 3. Therefore, it is true that Wilson's disease can cause liver problems. Summary: B: False - Incorrect, as Wilson's disease does cause liver problems. C: Sometimes - Incorrect, as Wilson's disease consistently leads to liver problems. D: Only in children - Incorrect, as Wilson's disease can affect individuals of all ages, not just children.

Correct Answer: A

Rationale: The correct answer is A: 120 days. Red blood cells (RBCs) have a lifespan of around 120 days. This is because they do not contain a nucleus and other organelles, limiting their ability to repair and maintain themselves. RBCs are constantly being produced and replaced by the bone marrow. Choices B, C, and D are incorrect as they do not align with the established scientific knowledge regarding the lifespan of RBCs. A lifespan of 100, 200, or 80 days is not consistent with the typical turnover rate and function of red blood cells in the body.