The nurse is reviewing the parts of the complete blood count and differential with a patient. Where should the nurse state that neutrophils, eosinophils, and basophils are produced?

Correct Answer: D

Rationale: The correct answer is D: Red bone marrow. Neutrophils, eosinophils, and basophils are all types of white blood cells that are produced in the red bone marrow. Red bone marrow is the primary site of hematopoiesis in adults, where all blood cells, including white blood cells, are produced. The red bone marrow contains stem cells that differentiate into various types of blood cells, including neutrophils, eosinophils, and basophils. Therefore, the nurse should explain to the patient that these specific types of white blood cells are produced in the red bone marrow. The other choices (A: Spleen, B: Thymus, C: Lymph nodes) are incorrect because they are not the primary sites for the production of these specific white blood cells.

Correct Answer: D

Rationale: The correct answer is D: 4 hours. Blood products typically have a maximum hang time of 4 hours to reduce the risk of bacterial contamination and ensure the integrity of the product. Beyond this time, there is an increased risk of bacterial growth, which can lead to serious infections in the patient. It is crucial to adhere to the recommended hang time to maintain the safety and efficacy of the blood product. Summary of other choices: A: 1 hour - Too short of a time frame for a blood product to be infused, as it would not allow for the complete administration. B: 2 hours - While closer to the correct answer, it still falls short of the recommended 4-hour maximum hang time for blood products. C: 3 hours - Again, this is not the optimal choice as it exceeds the safe hang time for blood products, increasing the risk of contamination and deterioration.

Correct Answer: C

Rationale: The normal blood pH range is 7.35-7.45. Choice C (7.38) falls within this range, indicating a normal pH level. Choices A (7.29) and D (7.48) are outside the normal range, indicating acidosis and alkalosis, respectively. Choice B (7.31) is slightly below the normal range, indicating mild acidosis. Therefore, the correct answer is C as it represents a normal blood pH level within the appropriate range.

Correct Answer: A

Rationale: The correct answer is A: 0.9% normal saline. When preparing a blood transfusion, it is essential to select a compatible fluid that will not cause hemolysis of the red blood cells. Normal saline is isotonic and compatible with blood, making it the ideal choice. Dextrose solutions can cause hemolysis and should not be used for blood transfusions. Choice B and C contain dextrose, which is not suitable for blood transfusions. Choice D contains a lower concentration of normal saline, which may not be as effective in maintaining the osmotic balance of the blood cells. Therefore, selecting 0.9% normal saline ensures the safety and integrity of the transfused blood.

Correct Answer: D

Rationale: The correct answer is D: White blood cell (WBC) count of 2800/L. A low WBC count (leukopenia) in an older patient can indicate an impaired immune system, making them vulnerable to infections. This is concerning as older adults have a weakened immune response. A: Hematocrit of 35% is within the normal range. B: Hemoglobin of 11.8 g/dL is slightly low but not a major concern as long as it's not significantly lower. C: Platelet count of 400000/L is within the normal range and not typically a cause for concern.