Nursing Elites

1. Why is a precise amount of oxygen necessary for a patient with COPD to prevent which complication?

• A. Cardiac arrest related to increased partial pressure of carbon dioxide in arterial blood (PaCO2)
• B. Circulatory overload due to hypervolemia
• C. Respiratory excitement
• D. Inhibition of the respiratory hypoxic stimulus

Correct answer: D

Rationale: In patients with COPD, the respiratory drive is often stimulated by low oxygen levels. Administering too much oxygen can inhibit this hypoxic drive, leading to respiratory depression and potential respiratory failure. Therefore, it is crucial to carefully regulate the oxygen therapy to prevent the inhibition of the respiratory hypoxic stimulus in COPD patients.

2. In which of the following organs does the exchange of gases take place?

• A. Kidneys
• B. Lungs
• C. Liver
• D. Heart

Correct answer: B

Rationale: The exchange of gases, specifically oxygen and carbon dioxide, occurs in the lungs. In the lungs, oxygen from the air we breathe enters the bloodstream, while carbon dioxide is removed from the bloodstream and exhaled. This process is essential for respiration and supplying the body with oxygen for energy production. The kidneys filter waste from the blood to produce urine and regulate fluid balance (Choice A). The liver is involved in detoxification, protein synthesis, and producing bile (Choice C). The heart is responsible for pumping blood throughout the body to deliver oxygen and nutrients (Choice D).

3. Mrs. Mitchell has been given a copy of her diet. The nurse discusses the foods allowed on a 500-mg low sodium diet. These include:

• A. A ham and Swiss cheese sandwich on whole wheat bread
• B. Mashed potatoes and broiled chicken
• C. A tossed salad with oil and vinegar and olives
• D. Chicken bouillon

Correct answer: B

Rationale: The correct answer is B: Mashed potatoes and broiled chicken. Both mashed potatoes and broiled chicken are typically low in sodium content, making them suitable choices for a 500-mg low sodium diet. The other options, such as a ham and Swiss cheese sandwich on whole wheat bread, a tossed salad with oil and vinegar and olives, and chicken bouillon, may contain higher amounts of sodium and are not typically recommended for a low sodium diet.

4. A client is recovering from an acute myocardial infarction that occurred 3 days ago. Which of the following instructions should the nurse include in the care plan?

• A. Perform an ECG every 12 hours.
• B. Place the client in a supine position while resting.
• C. Draw a troponin level every 4 hours.
• D. Obtain a cardiac rehabilitation consultation.

Correct answer: D

Rationale: After an acute myocardial infarction, cardiac rehabilitation is crucial for the client's recovery. It helps improve the client's overall cardiovascular health, reduces the risk of future cardiac events, and promotes a healthy lifestyle. The other options do not directly address the importance of cardiac rehabilitation in the client's recovery process.

5. A client experiencing dyspnea will receive continuous oxygen. Which oxygen device should be used to deliver a precise amount of oxygen?

• A. Non-rebreather mask
• B. Venturi mask
• C. Nasal cannula
• D. Simple face mask

Correct answer: B

Rationale: A Venturi mask is the most appropriate choice for delivering a precise amount of oxygen to a client with dyspnea. Unlike other oxygen delivery devices, the Venturi mask allows for accurate oxygen concentration delivery by controlling the amount of air entrained. This feature is crucial in ensuring the client receives the prescribed oxygen concentration, especially in cases where precise oxygen delivery is required.

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