Answer to Question 1
Correct Answer: 1,3,5
Rationale 1: Increasing red blood cell count is the desired effect of darbepoetin alfa.
Rationale 2: Darbepoetin alfa is administered subcutaneously or intravenously.
Rationale 3: The benefit of darbepoetin alfa over epoetin alfa is that it has a longer duration of action and can be given once a week.
Rationale 4: Both drugs have similar adverse effects and the same black box warning.
Rationale 5: Maximum response occurs in 2 to 4 weeks.
Global Rationale: Increasing red blood cell count is the desired effect of darbepoetin alfa. The benefit of darbepoetin alfa over epoetin alfa is that it has a longer duration of action and can be given once a week. Maximum response occurs in 2 to 4 weeks. Darbepoetin alfa is administered subcutaneously or intravenously. Both drugs have similar adverse effects and the same black box warning.
Answer to Question 2
Correct Answer: 1,4,5
Rationale 1: Some clients with chronic renal failure develop neutralizing antibodies to subcutaneous epoetin alfa, which can lead to a rapidly developing severe anemia known as pure red cell aplasia.
Rationale 2: If the client is developing pure red cell aplasia, waiting until tomorrow could be a critical error.
Rationale 3: The epoetin alfa should be held.
Rationale 4: Asking how the client has been feeling is the first step in assessing whether anemia is developing.
Rationale 5: A decrease in hematocrit is not the expected effect of administering epoetin alfa and may signal a severe adverse effect. The lab result should be verified.
Global Rationale: Some clients with chronic renal failure develop neutralizing antibodies to subcutaneous epoetin alfa, which can lead to a rapidly developing severe anemia known as pure red cell aplasia. Asking how the client has been feeling is the first step in assessing whether anemia is developing. A decrease in hematocrit is not the expected effect of administering epoetin alfa and may signal a severe adverse effect. The lab result should be verified. If the client is developing pure red cell aplasia, waiting until tomorrow could be a critical error. The epoetin alfa should be held.