Which information will the nurse include when teaching a patient who is receiving chemotherapy for leukemia?

Choice A rationale:

A low level of hepcidin would not cause a decrease in hemoglobin levels. Hepcidin regulates iron homeostasis by inhibiting the absorption of iron from the intestines and promoting its storage in cells.

Choice B rationale:

An increase in iron-binding capacity typically occurs in conditions like iron deficiency anemia, where the body tries to increase its capacity to transport iron. This would not cause a low hemoglobin level in an otherwise healthy individual.

Choice C rationale:

Aging often leads to a decrease in the efficiency of nutrient absorption, including iron. This decrease in intestinal absorption of iron can result in low hemoglobin levels in elderly individuals. It's a common cause of anemia in the elderly population.

Choice D rationale:

Erythropoietin is a hormone produced by the kidneys that stimulates the production of red blood cells. A decrease in erythropoietin secretion from the kidneys would lead to anemia, but it is not a typical effect of aging and is usually associated with kidney disease.

The correct answer is c. Respiratory acidosis.

Choice A reason: Metabolic acidosis is incorrect because the HCO3 level is normal. In metabolic acidosis, we would expect to see a decreased HCO3.

Choice B reason: Metabolic alkalosis is incorrect because the HCO3 level is normal. In metabolic alkalosis, we would expect to see an increased HCO3.

Choice C reason: The given ABG results indicate a low pH (acidosis), an elevated PaCO2 (respiratory component), and a normal HCO3 (metabolic component). The low pH and increased PaCO2 suggest respiratory acidosis.

Choice D reason: Respiratory alkalosis is incorrect because the PaCO2 level is elevated, not decreased. In respiratory alkalosis, we would expect to see a decreased PaCO2.