which lab value is critical for a patient on heparin therapy
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Nursing Elites

ATI RN

ATI RN Exit Exam

1. Which lab value is critical for a patient on heparin therapy?

Correct answer: A

Rationale: The correct answer is to monitor aPTT. Activated Partial Thromboplastin Time (aPTT) is crucial for patients on heparin therapy as it helps determine the clotting ability of the blood. By monitoring aPTT, healthcare providers can adjust the dosage of heparin to maintain therapeutic levels and prevent bleeding complications. Monitoring INR is more commonly associated with warfarin therapy, not heparin. Monitoring platelet count is important for assessing the risk of bleeding or clotting disorders but is not specific to heparin therapy. Monitoring sodium levels is not directly related to assessing the effectiveness or safety of heparin therapy.

2. A nurse is caring for a client who is receiving enteral feedings through a nasogastric tube. Which of the following findings should the nurse report to the provider?

Correct answer: A

Rationale: The correct answer is A. A gastric residual of 200 mL or more indicates delayed gastric emptying, which can be a sign of potential complications such as aspiration or intolerance to the enteral feedings. This finding should be reported to the healthcare provider for further evaluation and possible intervention. Choices B, C, and D are within normal limits and do not require immediate reporting. A pH of 5.0 is normal for gastric contents, bowel sounds in all quadrants indicate normal gastrointestinal motility, and a temperature of 37.5°C (99.5°F) is within the normal range.

3. A client who is 48 hours postoperative following abdominal surgery is being assessed by a nurse. Which of the following findings should the nurse report to the provider?

Correct answer: B

Rationale: Sanguineous drainage from the surgical site 48 hours after surgery could indicate a complication such as hemorrhage or infection and should be reported. Sanguineous drainage is typically seen in the early postoperative period due to the presence of blood. Serous drainage, on the other hand, is normal in the later stages of wound healing. A heart rate of 80/min is within the normal range for an adult. A temperature of 37.5°C (99.5°F) is slightly elevated but not a concerning finding in the absence of other symptoms.

4. A client has a chest tube connected to a water-seal drainage system. Which of the following actions should be taken?

Correct answer: C

Rationale: The correct action for the nurse to take when caring for a client with a chest tube connected to a water-seal drainage system is to add sterile water to the water-seal chamber. This is necessary to maintain the correct water level for proper chest tube function. Clamping the chest tube during ambulation (Choice A) is incorrect as it can lead to complications by obstructing drainage. Keeping the collection chamber below the level of the chest (Choice B) is incorrect because it should be kept below the chest to facilitate drainage. Emptying the collection chamber every 12 hours (Choice D) is incorrect as it should be emptied whenever it reaches the fill line or as per facility policy, not on a fixed time schedule.

5. A healthcare professional is reviewing the laboratory results of a client who is receiving chemotherapy. Which of the following findings should the healthcare professional report immediately?

Correct answer: C

Rationale: A platelet count of 90,000/mm³ indicates thrombocytopenia, which increases the risk of bleeding and requires immediate intervention. Thrombocytopenia can lead to serious bleeding complications, so it is crucial to address this finding promptly. A low white blood cell count (choice A) may indicate neutropenia but is not as immediately life-threatening as severe thrombocytopenia. A hemoglobin level of 8 g/dL (choice B) would require intervention but is not as urgent as addressing a critically low platelet count. A serum potassium level of 3.5 mEq/L (choice D) is on the lower side of normal but does not pose an immediate risk to the client's safety compared to severe thrombocytopenia.

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