Nursing Elites

1. A nurse is teaching a client about using a continuous positive airway pressure (CPAP) device to treat obstructive sleep apnea. Which of the following information should the nurse include in the teaching?

• A. It delivers a preset amount of inspiratory pressure throughout the breathing cycle
• B. It has a continuous adjustment feature that changes the airway pressure throughout the cycle
• C. It delivers a preset amount of airway pressure throughout the breathing cycle
• D. It delivers positive pressure at the end of each breath

Correct answer: C

Rationale: The correct answer is C because a CPAP device delivers a preset amount of positive airway pressure continuously throughout all inspiration and expiration cycles. Choice A is incorrect because CPAP does not deliver inspiratory pressure at the beginning of each breath; it provides continuous positive pressure. Choice B is incorrect because CPAP typically delivers a constant pressure rather than having a feature that changes pressure throughout the cycle. Choice D is incorrect as CPAP does not deliver positive pressure specifically at the end of each breath; it maintains a consistent pressure throughout the breathing cycle.

2. A patient with a chest tube has continuous bubbling in the water seal chamber. What does this indicate?

• A. An air leak
• B. A blocked chest tube
• C. Drainage from the site
• D. Blood clot in the chest tube

Correct answer: A

Rationale: Continuous bubbling in the water seal chamber of a chest tube indicates an air leak. This situation requires immediate attention to prevent complications such as lung collapse. A blocked chest tube would typically result in absent or fluctuating bubbling. Drainage from the site would be observed in the collection chamber, not the water seal chamber. A blood clot in the chest tube would lead to cessation of drainage.

3. What teaching should be provided to a patient following an escharotomy for burn injuries?

• A. Monitor for infection
• B. Restrict fluid intake
• C. Avoid physical activity
• D. Limit phosphorus to 1,500 mg/day

Correct answer: A

Rationale: Following an escharotomy for burn injuries, patients should be taught to monitor for infection and care for the incision site. Choice A is the correct answer because infection is a common risk after a procedure involving incisions. Choices B, C, and D are incorrect. Restricting fluid intake is not typically advised after an escharotomy; avoiding physical activity may vary depending on the individual's condition and should be guided by healthcare providers; and limiting phosphorus to 1,500 mg/day is not directly related to post-escharotomy care.

4. What teaching should be provided to a patient following surgical removal of a cataract?

• A. Avoid NSAIDs
• B. Wear dark glasses while outdoors
• C. Creamy white drainage is normal
• D. Reduce phosphorus intake to 700 mg/day

Correct answer: A

Rationale: The correct teaching to provide to a patient following surgical removal of a cataract is to avoid NSAIDs. NSAIDs can increase the risk of bleeding at the surgical site, so it is important to steer clear of them. Choice B, wearing dark glasses while outdoors, may be recommended post-surgery to protect the eyes from bright light, but it is not the priority teaching in this case. Choice C, stating that creamy white drainage is normal, is not accurate as drainage from the eye should be monitored and reported. Choice D, reducing phosphorus intake to 700 mg/day, is unrelated to post-cataract surgery care and is not a necessary teaching point.

5. What ECG changes are expected in a patient with hypokalemia?

• A. Flattened T waves
• B. Prominent U waves
• C. Widened QRS complexes
• D. Tall T waves

Correct answer: A

Rationale: Flattened T waves are an early indicator of hypokalemia on an ECG. Hypokalemia primarily presents with flattened T waves, not prominent U waves, widened QRS complexes, or tall T waves. Prominent U waves are associated with hypokalemia only in severe cases. Widened QRS complexes are more indicative of hyperkalemia, while tall T waves are seen in hyperkalemia as well.

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