Nursing Elites

1. Which of the following is the best method for confirming nasogastric tube placement?

• A. Auscultating over the stomach while injecting air
• B. Checking the pH of the aspirate
• C. Observing the patient’s response during feeding
• D. Measuring the external length of the tube

Correct answer: B

Rationale: Checking the pH of the aspirate is the most reliable method to confirm nasogastric tube placement as it provides direct evidence of the tube's location in the stomach. When the pH is acidic (pH < 5), it indicates that the tube is correctly placed in the stomach. Auscultating over the stomach while injecting air may not always be accurate, as the sound can be misleading due to various factors. Observing the patient’s response during feeding is not a definitive method for confirming tube placement, as it can be influenced by other factors. Measuring the external length of the tube does not ensure correct placement within the GI tract and can be affected by external factors like patient anatomy.

2. During the immediate postoperative period following a total hip replacement, which intervention is most important for the nurse to implement?

• A. Encourage the client to use a walker or cane when ambulating
• B. Keep the client's hip aligned with knees abducted
• C. Teach the client to sit on the side of the bed before standing
• D. Monitor urinary flow via an indwelling catheter

Correct answer: B

Rationale: Keeping the client's hip aligned with the knees abducted is crucial to prevent dislocation of the prosthesis, which is a priority immediately after total hip replacement surgery. This position helps maintain the stability of the new hip joint. Encouraging the client to use a walker or cane (Choice A) is important but not as critical as ensuring proper hip alignment. Teaching the client to sit on the side of the bed before standing (Choice C) is a good practice but not as essential as maintaining hip alignment. Monitoring urinary flow via an indwelling catheter (Choice D) is not directly related to preventing complications immediately after a total hip replacement.

3. At one minute after birth, an infant is crying, has a heart rate of 140, has acrocyanosis, resists the suction catheter, and keeps his arms extended and his legs flexed. What is the Apgar score?

• A. 4
• B. 6
• C. 8
• D. 10

Correct answer: C

Rationale: The Apgar score is based on five components: heart rate, respiratory effort, muscle tone, reflex irritability, and color. In this case, the infant has a heart rate over 100 (2 points), is crying (2 points indicating good respiratory effort), resists the catheter (2 points for good reflex irritability), but has acrocyanosis (partial point deduction of 1). Thus, the Apgar score at one minute after birth would be 8. Choice A is incorrect as the given signs indicate a higher score. Choice B is incorrect as the signs described support a score above 6. Choice D is incorrect as it represents a perfect score which is not the case here due to acrocyanosis.

4. What is the primary role of the sinoatrial (SA) node in the heart?

• A. Pacemaker of the heart
• B. Blood pressure regulation
• C. Electrical conduction delay
• D. Stimulating muscle contraction

Correct answer: A

Rationale: The correct answer is A: Pacemaker of the heart. The SA node, known as the natural pacemaker, initiates the electrical impulses that set the rhythm for the heartbeat. It is responsible for coordinating the heart's contractions by generating electrical signals at regular intervals. Choice B is incorrect as the SA node's primary function is not related to blood pressure regulation. Choice C is incorrect as the SA node does not cause electrical conduction delay but rather initiates and conducts the electrical impulses. Choice D is incorrect as the SA node does not directly stimulate muscle contraction but rather initiates the electrical events that lead to muscle contraction.

5. The nurse is providing care for a client with type 1 diabetes mellitus who is receiving NPH insulin. The nurse notices that the client's evening glucose levels are consistently above 260 mg/dl. What does this indicate?

• A. States that her feet are constantly cold and feel numb
• B. A wound on the ankle that starts to drain and becomes painful
• C. Consecutive evening serum glucose greater than 260 mg/dl
• D. Reports nausea in the morning but still able to eat breakfast

Correct answer: C

Rationale: High evening glucose levels suggest that the current insulin dosage may be inadequate to control the client's blood sugar levels effectively. This indicates poor glycemic control and the need for a possible adjustment in the insulin regimen. Option A describes symptoms of peripheral neuropathy, which are not directly related to the elevated glucose levels but may be a long-term complication of diabetes. Option B describes a wound infection, which is not directly related to the client's high glucose levels. Option D mentions morning nausea, which could be due to various causes and is not directly related to the high evening glucose levels.

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