ATI RN
The Hematologic System ATI Questions
Question 1 of 5
A nurse is caring for a client who has chronic stable angina. The nurse should identify that which of the following drugs inhibits the action of adenosine diphosphate receptors (ADP) on platelets and can be prescribed to reduce the client's risk for myocardial infarction?
Correct Answer: A
Rationale: 1. Clopidogrel inhibits ADP receptors on platelets, reducing platelet aggregation and clot formation. 2. By reducing platelet aggregation, clopidogrel decreases the risk of myocardial infarction in patients with chronic stable angina. 3. Heparin acts by inhibiting thrombin and factor Xa, not ADP receptors. 4. Warfarin inhibits vitamin K-dependent clotting factors, not ADP receptors. 5. Alteplase is a thrombolytic agent that dissolves blood clots, not an ADP receptor inhibitor.
Question 2 of 5
A nurse is caring for a client who is about to begin therapy with recombinant factor IX to treat hemophilia B. The client asks the nurse about the risk of disease transmission with recombinant factor IX as compared with plasma derived factor IX. The nurse should explain that the recombinant factor IX practically eliminates the risk for which of the following?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
A nurse is administering epoetin intravenously to a client who has renal failure. Which of the following actions should the nurse take?
Correct Answer: B
Rationale: The correct answer is B: Administer via IV bolus over 1 to 3 min. This is the correct action because epoetin is typically administered intravenously over a specified time frame to prevent adverse reactions such as rapid changes in blood pressure or heart rate. Shaking the vial before using (option A) is unnecessary and may lead to frothing. Diluting the drug with D5W (option C) is not recommended for administration as an IV bolus. Saving the used vial for the next dose (option D) is incorrect and violates medication safety protocols. Administering via IV bolus over 1 to 3 min ensures safe and effective delivery of the medication.
Question 4 of 5
The International Normalized Ratio (INR) was developed for the purpose of
Correct Answer: D
Rationale: Rationale: 1. INR standardizes PT results across labs. 2. Warfarin therapy requires close monitoring. 3. INR helps adjust warfarin dose accurately. 4. INR is not specific to heparin, oral anticoagulants, or screening for clotting system abnormalities. Summary: A: Heparin is monitored by aPTT. B: Oral anticoagulant therapy is monitored by INR. C: Intrinsic clotting abnormalities are not detected by INR. D: Warfarin therapy monitoring is standardized by INR.
Question 5 of 5
According to the FAB classification, the L2 stage is characterized by:
Correct Answer: C
Rationale: The correct answer is C because according to the FAB classification, the L2 stage is characterized by large homogenous blasts with scanty nucleoli and a higher nucleus to cytoplasm ratio. This stage represents acute lymphoblastic leukemia with a high risk of relapse. Choice A is incorrect as it describes the L1 stage. Choice B is incorrect as it describes the L3 stage. Choice D is incorrect as it does not accurately describe the characteristics of the L2 stage.