Nursing Elites

1. A client who is mouth breathing is receiving oxygen by face mask. The nursing assistant asks the nurse why a water bottle is attached to the oxygen tubing near the wall oxygen outlet. The nurse responds that the primary purpose of the water is to:

• A. Prevent the client from getting a nosebleed
• B. Give the client added fluid by way of the respiratory tree
• C. Humidify the oxygen that is bypassing the client’s nose
• D. Prevent fluid loss from the lungs during mouth breathing

Correct answer: C

Rationale: The purpose of the water bottle is to humidify the oxygen that is bypassing the nose during mouth breathing. When a client breathes through the mouth, the oxygen delivered by the face mask bypasses the natural humidification provided by the nasal passages. Therefore, the water bottle attachment helps to add moisture to the oxygen, preventing dryness and irritation to the respiratory tract. Choices A, B, and D are incorrect. Clients breathing through the mouth are not at risk for nosebleeds, do not receive added fluid through the respiratory tree, and do not experience fluid loss from the lungs due to mouth breathing.

2. A client with diabetes mellitus who is taking NPH insulin (Humulin N) in the evening is most likely to become hypoglycemic shortly after midnight because this insulin peaks in 6 to 8 hours. What intervention should the nurse recommend to help prevent hypoglycemia while the client is sleeping?

• A. Eat a bedtime snack.
• B. Avoid physical activity.
• C. Take half the usual dose of insulin.
• D. Discontinue insulin until the next meal.

Correct answer: A

Rationale: Eating a bedtime snack is the most appropriate intervention to prevent hypoglycemia during the night when NPH insulin peaks. This snack helps maintain blood glucose levels and counteracts the risk of hypoglycemia. Avoiding physical activity is not recommended as it can further lower blood sugar levels. Taking half the usual dose of insulin can lead to inadequate control of blood sugar levels. Discontinuing insulin until the next meal can result in uncontrolled hyperglycemia, especially during the peak action of NPH insulin.

3. A client is receiving a continuous IV infusion of heparin for the treatment of deep vein thrombosis. The client’s activated partial thromboplastin time (aPTT) level is 80 seconds. The client’s baseline before the initiation of therapy was 30 seconds. Which action does the nurse anticipate is needed?

• A. Shutting off the heparin infusion
• B. Increasing the rate of the heparin infusion
• C. Decreasing the rate of the heparin infusion
• D. Leaving the rate of the heparin infusion as is

Correct answer: C

Rationale: The nurse needs to decrease the rate of the heparin infusion. The therapeutic dose of heparin for the treatment of deep vein thrombosis is designed to keep the aPTT between 1.5 and 2.5 times normal. With the client's aPTT level elevated to 80 seconds from a baseline of 30 seconds, it indicates that the current rate of heparin infusion is too high. Lowering the rate of infusion is necessary to bring the aPTT within the desired therapeutic range. Choices A, B, and D are incorrect because shutting off the infusion, increasing the rate, or leaving it as is would not address the elevated aPTT level and may lead to complications.

4. A client without a history of respiratory disease has a pulse oximeter in place after surgery. The nurse monitors the pulse oximeter readings to ensure that oxygen saturation remains above:

• A. 85%
• B. 89%
• C. 95%
• D. 100%

Correct answer: C

Rationale: Pulse oximetry is a noninvasive method of continuously monitoring the oxygen saturation of hemoglobin (SaO2). In the absence of underlying respiratory disease, the expected oxygen saturation level is at least 95%. Oxygen saturation levels below 95% may indicate hypoxemia, which can compromise tissue perfusion and oxygen delivery to vital organs. Therefore, maintaining oxygen saturation above 95% is crucial to ensure adequate oxygenation post-surgery. Choices A, B, and D are incorrect as they represent oxygen saturation levels that are below the expected value for a client without a history of respiratory disease, which should be at least 95%.

5. A nurse performing nasopharyngeal suctioning suddenly notes the presence of bloody secretions. What should the nurse do first?

• A. Continue suctioning to remove the blood
• B. Check the degree of suction being applied
• C. Encourage the client to cough out the bloody secretions
• D. Remove the suction catheter from the client’s nose and begin vigorous suctioning through the mouth

Correct answer: B

Rationale: The correct answer is to check the degree of suction being applied (Choice B). When bloody secretions are encountered during nasopharyngeal suctioning, it is crucial to assess the situation promptly. Checking the degree of suction being applied is the first step as excessive suction pressure may be causing trauma and bleeding. Adjusting the suction pressure may be necessary to prevent further harm. Continuing suctioning to remove the blood (Choice A) or performing vigorous suctioning through the mouth (Choice D) can lead to increased trauma and worsen bleeding. Encouraging the client to cough out the bloody secretions (Choice C) is not appropriate since the client undergoing suctioning is typically unable to expectorate secretions. Therefore, the priority is to check and adjust the suction settings to ensure safe and effective suctioning.

Similar Questions