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 tub
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Nursing Elites

HESI RN

HESI Medical Surgical Assignment Exam

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:

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. The client with diabetes mellitus is being taught how to prevent or delay chronic kidney disease (CKD). Which client statements indicate a lack of understanding of the teaching? (Select all that apply.)

Correct answer: D

Rationale: The correct answer is D. Both statements A and B indicate a lack of understanding of CKD prevention. Taking aspirin every 4 to 8 hours can lead to kidney damage, and maintaining a body mass index (BMI) of 30 is considered overweight, which can increase the risk of developing CKD. Statement C, on the other hand, correctly addresses smoking cessation, which is crucial in preventing CKD. Therefore, choices A and B are incorrect as they do not align with CKD prevention strategies, making option D the correct choice.

3. A client who is scheduled for cardiac catheterization to rule out coronary occlusion should be informed by the nurse that:

Correct answer: D

Rationale: Before cardiac catheterization, the nurse should inform the client that the procedure is performed in a darkened room in the radiology department, not the operating room. The client should expect to lie still on an x-ray table for the duration of the procedure, not necessarily for about 4 hours. Keeping the eyes closed is not necessary as the room is usually dimly lit. The client may experience sensations of warmth or flushing during the procedure due to catheter passage and dye injection, making choice D the correct answer.

4. A healthcare professional reviews the allergy list of a client scheduled for an intravenous urography. Which client allergy should prompt urgent contact with the healthcare provider?

Correct answer: A

Rationale: Clients with seafood allergies should alert healthcare professionals to urgently contact the healthcare provider before an intravenous urography. The standard dyes used in this procedure can trigger severe allergic reactions in individuals with seafood allergies. Penicillin, bee stings, and red food dye allergies do not pose a direct threat during intravenous urography, making them less critical for immediate intervention.

5. Oxygen via nasal cannula has been prescribed for a client with emphysema. The nurse checks the physician’s orders to ensure that the prescribed flow is not greater than:

Correct answer: B

Rationale: The correct answer is B, 3 L/min. Clients with emphysema typically receive oxygen at a flow rate of 1 to 2 L/min, with a maximum of 3 L/min. Higher flow rates can lead to oxygen toxicity in these clients, so it's crucial to adhere to the prescribed limits. Choice A (1 L/min) is too low and may not provide adequate oxygenation for the client. Choices C (4 L/min) and D (6 L/min) exceed the recommended flow rates for clients with emphysema and can increase the risk of oxygen toxicity.

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