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. A nurse is reviewing the laboratory values of a client who is taking spironolactone. Which of the following values should the nurse report to the provider?

A. Sodium 144 mEq/L
B. Potassium 5.2 mEq/L
C. Bicarbonate 24 mEq/L
D. Magnesium 1.9 mEq/L

Correct answer: B

Rationale: The correct answer is B: 'Potassium 5.2 mEq/L.' When a client is taking spironolactone, which is a potassium-sparing diuretic, monitoring potassium levels is crucial. A potassium level of 5.2 mEq/L is higher than normal and can lead to cardiac dysrhythmias, so it should be reported. Choices A, C, and D are within normal ranges and would not be of immediate concern when assessing a client taking spironolactone.

3. Which medication is used to reverse the effects of opioid overdose?

A. Naloxone
B. Epinephrine
C. Atropine
D. Lidocaine

Correct answer: A

Rationale: Naloxone is the correct answer. Naloxone is specifically used to reverse the effects of opioid overdose by binding to opioid receptors and blocking the effects of opioids. Epinephrine is mainly used to treat severe allergic reactions, Atropine is used for certain types of heart conditions and to reduce salivation or respiratory secretions, and Lidocaine is a local anesthetic used for numbing purposes. Therefore, choices B, C, and D are incorrect in the context of reversing opioid overdose.

4. A nurse is caring for a client who has a chest tube. Which of the following findings should the nurse report to the provider?

A. Drainage of 75 mL in the past 24 hours.
B. Intermittent bubbling in the water seal chamber.
C. Continuous bubbling in the water seal chamber.
D. Tidaling in the water seal chamber.

Correct answer: C

Rationale: Continuous bubbling in the water seal chamber should be reported to the provider as it can indicate an air leak. This finding suggests that air is escaping from the pleural space, which can lead to lung collapse or pneumothorax. Drainage of 75 mL in the past 24 hours is within the expected range for a client with a chest tube and is not a cause for concern. Intermittent bubbling in the water seal chamber is a normal finding that indicates the system is functioning properly. Tidaling in the water seal chamber is also an expected finding that shows the fluctuation of fluid with the client's breathing and is not alarming.

5. A nurse is caring for a client who is receiving a blood transfusion. Which of the following findings is a priority for the nurse to report?

A. Low back pain
B. Tachycardia
C. Flushed skin
D. Headache

Correct answer: B

Rationale: The correct answer is B: Tachycardia. Tachycardia can indicate a hemolytic transfusion reaction, a severe and life-threatening complication of blood transfusion. The nurse should report tachycardia immediately to prevent further complications. Low back pain, flushed skin, and headache are also important to monitor during a blood transfusion, but they are not as indicative of a severe transfusion reaction as tachycardia.