what is the proper technique for obtaining a blood specimen from a central venous line
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ATI LPN

ATI PN Comprehensive Predictor 2020 Answers

1. What is the proper technique for obtaining a blood specimen from a central venous line?

Correct answer: A

Rationale: The correct technique for obtaining a blood specimen from a central venous line is to use sterile gloves and discard the first 10 mL of blood. This practice helps ensure that the blood sample collected is not contaminated. Choice B is incorrect because flushing the line with heparin before drawing the specimen can contaminate the sample. Choice C is incorrect as administering heparin before drawing the specimen can affect the accuracy of the blood sample. Choice D is incorrect as using non-sterile gloves increases the risk of contamination, which is not recommended when obtaining a blood specimen from a central venous line.

2. What is an important consideration in managing a patient with heart failure?

Correct answer: A

Rationale: The most important consideration in managing a patient with heart failure is to monitor daily weight. This allows healthcare providers to assess fluid retention, adjust medications based on weight changes, and detect early signs of worsening heart failure. While oxygen therapy may be necessary in acute situations, it is not a routine management strategy for stable heart failure patients. Encouraging a low-sodium diet is important to manage fluid retention, but daily weight monitoring is a more direct measure of fluid status. Monitoring for signs of fluid overload is essential, but monitoring daily weight is a proactive approach to detect fluid accumulation before overt symptoms appear.

3. A nurse is caring for a client with dementia who is at risk of falls. What is the most appropriate intervention?

Correct answer: A

Rationale: The most appropriate intervention for a client with dementia at risk of falls is to use a bed exit alarm to notify staff of attempts to leave the bed. This intervention allows for timely assistance and prevents falls. Raising all four side rails (Choice B) can lead to entrapment or agitate the client. Encouraging frequent ambulation with assistance (Choice C) may not be suitable for a client at high risk of falls. Using restraints (Choice D) should be avoided as they can increase agitation, risk of injury, and have ethical implications.

4. What is a key nursing action for a client with a wound infection?

Correct answer: B

Rationale: Performing a wound culture before applying antibiotics is crucial for determining the specific type of infection present and selecting the most effective antibiotic treatment. Changing the dressing daily (Choice A) is a routine wound care practice but may not address the root cause of the infection. Cleansing the wound with alcohol-based solutions (Choice C) can be too harsh and delay wound healing. Applying a wet-to-dry dressing (Choice D) is an outdated practice that can cause trauma to the wound bed and hinder the healing process.

5. A client is being taught about prescribed asthma medications. Which of the following medications should the client use for treatment of an acute asthma attack?

Correct answer: C

Rationale: Albuterol is the correct choice for treating acute asthma attacks because it is a short-acting bronchodilator that provides quick relief by relaxing the muscles in the airways. Beclomethasone (choice A) and Salmeterol (choice B) are long-acting medications used for controlling and preventing asthma symptoms but are not for immediate relief during an acute attack. Montelukast (choice D) is a leukotriene receptor antagonist used for asthma maintenance therapy and not for acute asthma attacks.

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