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 providing teaching to a client who has a new prescription for warfarin. Which of the following statements indicates a need for further teaching?

Correct answer: B

Rationale: The correct answer is B. Eating more leafy green vegetables can increase vitamin K intake, which may reduce the effectiveness of warfarin. This can lead to fluctuations in the International Normalized Ratio (INR) levels, affecting the medication's efficacy. Choices A, C, and D are correct statements. Taking warfarin every other day, using a soft toothbrush to prevent gum bleeding, and having regular INR checks are all appropriate and important actions when taking warfarin.

3. A nurse is caring for a client who is receiving oxytocin to augment labor. The client's contractions are occurring every 2 minutes with a duration of 90 seconds. Which of the following actions should the nurse take?

Correct answer: C

Rationale: The correct action for the nurse to take in this situation is to discontinue the oxytocin infusion. With contractions occurring every 2 minutes and lasting 90 seconds, this pattern indicates hyperstimulation, which can be harmful to the fetus. Discontinuing the oxytocin infusion is essential to prevent further harm. Increasing the oxytocin infusion would exacerbate the situation, maintaining it would continue the risk, and providing reassurance to the client, although important, does not address the need for immediate action to ensure the safety of the fetus.

4. A healthcare provider is reviewing the laboratory report of a client with a prescription for digoxin. Which result requires withholding the medication?

Correct answer: D

Rationale: The correct answer is D. A low potassium level (3.1 mEq/L) can increase the risk of digoxin toxicity. Hypokalemia can potentiate the effects of digoxin on the heart, leading to serious dysrhythmias. Choices A, B, and C are within normal ranges and do not indicate a need to withhold digoxin.

5. In an emergency department following a community disaster, a healthcare provider is performing triage for multiple clients. To which of the following types of injuries should the provider assign the highest priority?

Correct answer: A

Rationale: During disaster triage, clients with severe injuries that are immediately life-threatening and have a high likelihood of mortality without intervention are assigned the highest priority. A below-the-knee amputation falls into this category as it indicates a critical injury that requires immediate attention to prevent further complications or loss of life. Fractured tibia, a 95% full-thickness body burn, and a 10 cm laceration to the forearm, while serious, do not pose the same level of immediate life-threatening risk as a below-the-knee amputation in the context of disaster triage.

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