which lab value is critical for a patient on heparin therapy

ATI RN

ATI RN Exit Exam

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

A. Monitor aPTT
B. Monitor INR
C. Monitor platelet count
D. Monitor sodium levels

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. How should fluid overload in a patient with heart failure be managed?

A. Administer diuretics
B. Increase fluid intake
C. Provide oral fluids
D. Provide chest physiotherapy

Correct answer: A

Rationale: Administering diuretics is the appropriate management for fluid overload in a patient with heart failure. Diuretics help to reduce fluid retention by increasing urine output, thereby alleviating the fluid overload. Choices B, C, and D are incorrect. Increasing fluid intake would worsen the condition by adding more fluid to an already overloaded system. Providing oral fluids is not specific enough to address the excess fluid in the body, and chest physiotherapy is not indicated for managing fluid overload in heart failure patients.

3. A nurse is reviewing the medical record of a client who has a new prescription for insulin glargine. Which of the following should the nurse include in the teaching?

A. This insulin has a peak effect of 2 to 4 hours.
B. This insulin has a duration of action of 24 hours.
C. This insulin is given before meals to control your blood sugar.
D. You should avoid eating 30 minutes before or after taking this insulin.

Correct answer: B

Rationale: The correct answer is B. Insulin glargine has a 24-hour duration of action, making it suitable for once-daily dosing for long-term blood sugar control. Choice A is incorrect as insulin glargine is a long-acting insulin with no pronounced peak effect in its action profile. Choice C is incorrect as insulin glargine is usually given at the same time each day regardless of meals. Choice D is incorrect as there is no specific requirement to avoid eating before or after taking insulin glargine.

4. What is the most important nursing assessment for a patient with suspected deep vein thrombosis (DVT)?

A. Check for leg pain
B. Perform Homan's sign test
C. Monitor for redness
D. Assess for warmth and swelling

Correct answer: A

Rationale: The most important nursing assessment for a patient with suspected deep vein thrombosis (DVT) is to check for leg pain. Leg pain is a cardinal symptom of DVT and is often the initial indicator of a blood clot. While assessing for warmth, swelling, and redness are also important in DVT evaluation, leg pain is the most crucial as it can prompt further diagnostic testing and interventions. Performing Homan's sign test is no longer recommended due to its low specificity and potential to dislodge a clot, causing complications. Monitoring for redness is important but may not always be present in DVT cases. Assessing for warmth and swelling is relevant but still secondary to the assessment of leg pain in suspected DVT cases.

5. A nurse in a pediatric clinic is teaching a newly hired nurse about the varicella roster. Which of the following information should the nurse include?

A. Children who have varicella are contagious until vesicles are crusted
B. Children who have varicella should receive the herpes zoster vaccination
C. Children who have varicella should be placed in droplet precautions
D. Children who have varicella are contagious 4 days before the first vesicle eruption

Correct answer: A

Rationale: The correct answer is A. Children with varicella are contagious until the vesicles crust over, which is important for preventing transmission. Choice B is incorrect as varicella and herpes zoster are caused by different viruses, so the varicella vaccine is given to prevent varicella, not herpes zoster. Choice C is incorrect because varicella is primarily spread through respiratory secretions, so airborne precautions are recommended, not droplet precautions. Choice D is incorrect as children with varicella are contagious even before the first vesicle eruption, not just 4 days before.