ATI LPN
Hematologic System Questions Questions
Question 1 of 5
The nurse is aware that blood type O is considered the universal donor. This means all patients can receive blood type O. Knowing this, which of the following statements is correct. (Select one that does not apply)
Correct Answer: D
Rationale: The correct answer is D because the statement is incorrect. A client with blood type AB cannot receive blood type ABO, as ABO is not a specific blood type. Blood type ABO includes blood types A, B, AB, and O. Therefore, the statement is nonsensical and misleading. Blood type AB can receive blood types A and B, but not ABO as a whole. Choices A, B, and C are incorrect because they correctly state that a client with blood type AB can receive blood types A, B, and O, respectively.
Question 2 of 5
A nurse is reviewing a client's repeat laboratory results 4 hr after administering fresh frozen plasma (FFP). Which of the following laboratory results should the nurse review?
Correct Answer: A
Rationale: The correct answer is A: Prothrombin time. Prothrombin time measures the time it takes for blood to clot, which is crucial after administering fresh frozen plasma (FFP) to assess its effectiveness in improving clotting factors. Hemoglobin level, platelet count, and white blood cell count are not directly affected by FFP administration and would not provide specific information on clotting status.
Question 3 of 5
A nurse is completing a medication history for a client who reports using fish oil as a dietary supplement. Which of the following substances in fish oil should the nurse recognize as a health benefit to this client?
Correct Answer: A
Rationale: The correct answer is A: Omega-3 fatty acids. Fish oil is rich in omega-3 fatty acids, which have numerous health benefits such as reducing inflammation, improving heart health, and promoting brain function. Omega-3 fatty acids are essential for overall health and well-being. Explanation of other choices: B: Vitamin D - While important for bone health, vitamin D is not the primary substance in fish oil known for its health benefits. C: Calcium - Calcium is essential for bone health, but it is not the main substance found in fish oil. D: Iron - Iron is crucial for oxygen transport in the body but is not typically found in fish oil in significant amounts.
Question 4 of 5
A nurse is caring for a client who has heart failure and whose telemetry reading displays a flattening of the T wave. Which of the following laboratory results should the nurse anticipate as the cause of this ECG change?
Correct Answer: A
Rationale: The correct answer is A: Potassium 2.8 mEq/L. Flattening of the T wave on ECG is a common sign of hypokalemia, which is a low potassium level. Potassium plays a crucial role in regulating the electrical activity of the heart, and low levels can lead to ECG changes such as T wave flattening. Therefore, in a client with heart failure displaying this ECG change, a low potassium level is the likely cause. Summary: - Choice B (Potassium 5.5 mEq/L) is incorrect as it is within the normal range. - Choice C (Calcium 8.0 mg/dL) is incorrect as calcium levels do not typically cause T wave changes. - Choice D (Magnesium 1.5 mEq/L) is incorrect as low magnesium levels can cause T wave changes, but in this scenario, potassium is the more likely cause based on the ECG finding.
Question 5 of 5
Which medication is a COX-2 enzyme blocker?
Correct Answer: B
Rationale: The correct answer is B: Celecoxib. Celecoxib is a COX-2 enzyme blocker, specifically designed to inhibit the COX-2 enzyme responsible for inflammation and pain. This selective action reduces the risk of gastrointestinal side effects commonly associated with non-selective NSAIDs like Diclofenac, Ibuprofen, and Naproxen, making Celecoxib a preferred choice for patients with a history of gastric ulcers or other gastrointestinal issues. Diclofenac (A), Ibuprofen (C), and Naproxen (D) are non-selective NSAIDs that inhibit both COX-1 and COX-2 enzymes, increasing the risk of gastrointestinal complications.