ATI RN
Anatomy of Hematologic System Questions
Question 1 of 5
A nurse is reviewing the medication record of a client who is receiving alteplase following an acute myocardial infarction (MI). Which of the following medications should the nurse expect the client to be taking in addition to the alteplase?
Correct Answer: D
Rationale: The correct answer is D: Heparin. Following an acute MI, a client receiving alteplase may also be prescribed heparin to prevent re-thrombosis and further clot formation. Alteplase is a thrombolytic agent that works by breaking down clots, while heparin is an anticoagulant that helps prevent new clots from forming. Protamine (choice A) is used to reverse the effects of heparin, not typically administered alongside alteplase. Desmopressin (choice B) is used for conditions like diabetes insipidus, unrelated to MI treatment. Ferrous sulfate (choice C) is an iron supplement, not indicated in this scenario.
Question 2 of 5
During haemostasis, prostacyclin
Correct Answer: B
Rationale: Prostacyclin is a vasodilator, which means it causes blood vessels to widen, leading to decreased blood pressure and increased blood flow. During haemostasis, this vasodilation helps in maintaining blood flow and preventing platelet aggregation in the damaged area. Option A is incorrect because prostacyclin does not cleave prothrombin into thrombin. Option C is incorrect as prostacyclin inhibits platelet aggregation. Option D is incorrect because prostacyclin does not directly activate fibrinolysis. In summary, the correct answer is B because prostacyclin's vasodilation function plays a crucial role in haemostasis by preventing excessive clot formation and maintaining blood flow.
Question 3 of 5
A laboratory finding of granulocytosis
Correct Answer: D
Rationale: The correct answer is D because granulocytosis refers to an increase in granulocytes in both blood and bone marrow. This finding is commonly seen in conditions such as infections and inflammatory processes. The other choices are incorrect because A describes agranulocytosis, B is a potential cause of granulocytosis, and C typically involves abnormal proliferation of myeloid cells rather than just granulocytes.
Question 4 of 5
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 through a process called hematopoiesis. The red bone marrow is a primary site for the production of blood cells, including these specific types of white blood cells. Neutrophils are important for fighting bacterial infections, eosinophils are involved in allergic reactions and parasitic infections, and basophils play a role in allergic responses. Therefore, it is crucial for the nurse to inform the patient that these cells are produced in the red bone marrow. The other choices (A: Spleen, B: Thymus, C: Lymph nodes) are incorrect as these organs do not play a primary role in the production of these specific types of white blood cells.
Question 5 of 5
The nurse is documenting findings after completing data collection with a patient. What term should the nurse use to document a large area of discoloration from hemorrhage under the skin?
Correct Answer: D
Rationale: The correct term to document a large area of discoloration from hemorrhage under the skin is ecchymosis. Ecchymosis refers to a bruise caused by the extravasation of blood into the subcutaneous tissues. Pallor (A) is paleness, rubor (B) is redness, and petechiae (C) are tiny, pinpoint-sized red or purple spots on the skin due to bleeding. Ecchymosis is the most appropriate term for describing a large area of discoloration from hemorrhage under the skin as it specifically denotes a bruise resulting from blood leakage into tissues.