Nursing Elites

1. A client's arterial blood gas results show a pH of 7.3 and a PaCO2 of 50 mm Hg. The client is experiencing which of the following acid-base imbalances?

• A. Metabolic acidosis
• B. Metabolic alkalosis
• C. Respiratory acidosis
• D. Respiratory alkalosis

Correct answer: C

Rationale: In respiratory acidosis, there is an excess of carbon dioxide (PaCO2 > 45 mm Hg) leading to a decrease in pH (<7.35). The given values of a pH of 7.3 and PaCO2 of 50 mm Hg indicate respiratory acidosis. Metabolic acidosis involves a primary decrease in bicarbonate levels with a compensatory decrease in PaCO2 to maintain balance. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. Respiratory alkalosis is marked by low PaCO2 and increased pH levels.

2. A client is wearing a Venturi mask to receive oxygen, and the dinner tray has arrived. What action by the nurse is best?

• A. Assess the client's oxygen saturation and, if normal, turn off the oxygen.
• B. Determine if the client can switch to a nasal cannula during the meal.
• C. Have the client lift the mask off the face when taking bites of food.
• D. Turn off the oxygen while the client eats the meal and then restart it.

Correct answer: B

Rationale: In this scenario, the nurse should determine if the client can safely switch to a nasal cannula during meals. It is crucial to ensure that the provider has approved this change. Oxygen is considered a medication and should be delivered continuously. Turning off the oxygen or lifting the mask while eating can lead to a decrease in the FiO2 delivered, potentially compromising the client's oxygenation status. Therefore, the best course of action is to ascertain if transitioning to a nasal cannula is appropriate for the client during the meal.

3. A client develops a pulmonary embolism. Which of the following interventions should the nurse implement first?

• A. Give morphine IV.
• B. Administer oxygen therapy.
• C. Start an IV infusion of lactated Ringer's.
• D. Initiate cardiac monitoring.

Correct answer: B

Rationale: Administering oxygen therapy is the priority intervention for a client with a pulmonary embolism. Oxygen helps improve oxygenation levels and decrease the workload on the heart. It is crucial to ensure adequate oxygenation before other interventions are initiated. Morphine IV, starting an IV infusion of lactated Ringer's, and initiating cardiac monitoring are important interventions but come after ensuring adequate oxygenation.

4. A client has a pleural chest tube. Which action should the nurse take to ensure safe use of this equipment?

• A. Never strip the tubing to maintain patency.
• B. Secure tubing junctions with tape to prevent accidental disconnections.
• C. Set wall suction at the level recommended by the device manufacturer.
• D. Keep padded clamps at the bedside for use if the drainage system is interrupted.

Correct answer: D

Rationale: To ensure safe use of a pleural chest tube, the nurse should keep padded clamps at the bedside for use if the drainage system becomes dislodged or is interrupted. Stripping the tubing should never be done to maintain patency. Tubing junctions should be secured with tape, not clamps. Wall suction should be set at the level recommended by the device manufacturer, not the provider.

5. During an assessment in the emergency department, an older adult client with community-acquired pneumonia is found to be confused. Which of the following findings should the nurse expect?

• A. Unequal pupils
• B. Hypertension
• C. Tympany upon chest percussion
• D. Confusion

Correct answer: D

Rationale: Confusion is a common finding in older adult clients with pneumonia, often indicating hypoxia. Hypertension, unequal pupils, and tympany upon chest percussion are not typically associated with community-acquired pneumonia in older adults.

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