Nursing Elites

1. 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).

2. A healthcare professional is reviewing ABG laboratory results of a client who is in respiratory distress. The results are pH 7.47, PaCO2 32 mm Hg, and HCO3 22 mm Hg. The healthcare professional should recognize that the client is experiencing which of the following acid-base imbalances?

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

Correct answer: B

Rationale: The ABG results show a high pH (alkalosis) along with low PaCO2 and normal HCO3 levels, indicating respiratory alkalosis. In this condition, there is excessive loss of carbon dioxide (as seen by the low PaCO2) leading to a decrease in carbonic acid concentration and subsequent increase in pH. Metabolic acidosis or alkalosis would involve primary changes in bicarbonate levels, which are not predominant in this case.

3. When preparing to administer an IM injection that is irritating to the subcutaneous tissue, what is the best action to prevent tracking of the medication?

• A. Use a small gauge needle
• B. Apply ice on the injection site
• C. Administer at a 45° angle
• D. Use the Z-track technique

Correct answer: D

Rationale: The Z-track technique is the best action to prevent tracking of the medication when administering an IM injection that is irritating to the subcutaneous tissue. This technique involves pulling the skin to the side before administering the injection and then releasing the skin after the injection. By doing so, a zig-zag pathway is created, preventing the medication from leaking into the subcutaneous tissue and reducing irritation. Options A, B, and C are incorrect. Using a small gauge needle may not prevent tracking of the medication. Applying ice on the injection site or administering at a 45° angle does not specifically address preventing tracking of the medication in cases where the injection is irritating to the subcutaneous tissue.

4. A client with COPD expresses concerns about leaving the house due to continuous oxygen use. What is an appropriate response by the nurse?

• A. There are portable oxygen delivery systems that you can take with you.
• B. When you go out, you can remove the oxygen and then reapply it when you get home.
• C. You probably will not be able to go out as much as you used to.
• D. Home health services will come to see you so you will not need to get out.

Correct answer: A

Rationale: For a client with COPD concerned about leaving the house while on continuous oxygen, the nurse should provide reassurance by mentioning the availability of portable oxygen delivery systems. These systems allow the client to maintain their oxygen therapy while being mobile, enabling them to go out and engage in activities outside the home. This response promotes independence and quality of life for the client, addressing their immediate concerns and offering a practical solution to their perceived limitation.

5. Which of the following interventions promotes patient safety?

• A. Assess the patient’s ability to ambulate and transfer from a bed to a chair
• B. Demonstrate the signal system to the patient
• C. Check to see that the patient is wearing their identification band
• D. All of the above

Correct answer: D

Rationale: All the listed interventions are essential for promoting patient safety. Assessing the patient’s ability to ambulate and transfer helps prevent falls, demonstrating the signal system ensures effective communication in emergencies, and checking the patient's identification band aids in accurate identification and treatment. By combining these interventions, healthcare providers can enhance patient safety and quality of care.

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