which lab value is critical for patients on warfarin therapy

ATI RN

ATI RN Exit Exam Test Bank

1. Which lab value is critical for patients on warfarin therapy?

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

Correct answer: A

Rationale: The correct answer is to monitor INR levels for patients on warfarin therapy. INR monitoring is essential because it helps assess the clotting tendency of the blood and ensures that patients are within the therapeutic range to prevent both blood clots and excessive bleeding. Monitoring potassium levels (Choice B), sodium levels (Choice C), or platelet count (Choice D) is not specifically required for patients on warfarin therapy and does not directly impact the effectiveness or safety of the medication.

2. A nurse is planning assignments for a licensed practical nurse (LPN) during a staffing shortage. Which client should be delegated to the LPN?

A. A client with an Hgb of 6.3 g/dl and a prescription for packed RBCs.
B. A client who sustained a concussion and has unequal pupils.
C. A client who is postoperative following a bowel resection with an NG tube set to continuous suction.
D. A client who fractured his femur yesterday and is experiencing shortness of breath.

Correct answer: C

Rationale: The correct answer is C because the client postoperative following a bowel resection with an NG tube set to continuous suction requires routine postoperative care, which an LPN can manage. Choice A involves administering blood products, which typically requires assessment and monitoring by a registered nurse. Choice B indicates a potentially serious neurological condition that requires assessment by a higher-level provider. Choice D suggests a client experiencing respiratory distress, which requires immediate assessment and intervention by a registered nurse or physician.

3. A nurse in the PACU is caring for a client who reports nausea. Which of the following actions should the nurse take first?

A. Turn the client on their side.
B. Administer an analgesic.
C. Administer antiemetic.
D. Monitor the client's vital signs.

Correct answer: A

Rationale: The correct action the nurse should take first when a client reports nausea in the PACU is to turn the client on their side. This action helps prevent aspiration in a client with nausea, reducing the risk of choking or inhaling vomitus. Administering an analgesic (Choice B) is not the priority in this situation unless pain is the primary cause of nausea. While administering an antiemetic (Choice C) can help relieve nausea, it is not the initial action to prevent aspiration. Monitoring the client's vital signs (Choice D) is important but should come after ensuring the client's safety by turning them on their side.

4. What is the best position for a patient experiencing shortness of breath?

A. Supine position
B. Semi-Fowler's position
C. Trendelenburg position
D. Prone position

Correct answer: B

Rationale: The best position for a patient experiencing shortness of breath is the Semi-Fowler's position. This position promotes lung expansion and improves oxygenation by allowing the chest to expand more fully. The Supine position (lying flat on the back) may worsen breathing difficulties by reducing lung capacity. The Trendelenburg position (feet elevated higher than the head) is not recommended for patients with shortness of breath as it can increase pressure on the diaphragm and compromise breathing. The Prone position (lying face down) is also not suitable for patients experiencing shortness of breath as it may further restrict breathing.

5. A healthcare provider is reviewing the medical record of a client who is requesting combination oral contraceptives. Which of the following conditions in the client's history is a contraindication to the use of oral contraceptives?

A. Hyperthyroidism.
B. Thrombophlebitis.
C. Diverticulosis.
D. Hypocalcemia.

Correct answer: B

Rationale: Thrombophlebitis is a contraindication for the use of oral contraceptives due to the increased risk of complications such as thromboembolism. Hyperthyroidism, diverticulosis, and hypocalcemia are not contraindications for oral contraceptives. Hyperthyroidism may affect the metabolism of contraceptives but does not contraindicate their use. Diverticulosis and hypocalcemia do not directly impact the safety or effectiveness of oral contraceptives.