ATI LPN
Hematologic System Questions Questions
Question 1 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 2 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 3 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.
Question 4 of 5
What is a consideration for patients taking corticosteroids?
Correct Answer: A
Rationale: The correct answer is A: Take in the morning to mimic the body's natural corticosteroid levels. Corticosteroids should be taken in the morning as it aligns with the body's natural cortisol production, reducing the risk of disrupting the sleep-wake cycle. Administering on an empty stomach (B) can cause gastric irritation. Avoiding water with corticosteroids (C) is unnecessary. Crushing enteric-coated tablets (D) can alter the drug's absorption pattern.
Question 5 of 5
Which medication can cause a false positive pap test?
Correct Answer: A
Rationale: The correct answer is A: Cyclophosphamide. Cyclophosphamide is an alkylating agent that can cause cellular changes in the cervix, leading to false positive pap test results. Methotrexate, Leflunomide, and Adalimumab do not typically affect pap test results. Therefore, Cyclophosphamide is the most likely medication to cause a false positive pap test due to its known effects on cervical cells.