what is the proper technique for obtaining a blood specimen from a central venous line
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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. A client with peripheral arterial disease (PAD) is being taught about foot care by a nurse. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct answer is B: 'Wear shoes that fit properly.' In peripheral arterial disease (PAD), it is crucial to wear shoes that fit well to prevent foot injuries. Choice A is incorrect because applying lotion between the toes can increase the risk of infection. Choice C is incorrect since walking barefoot at home can lead to injuries, especially in individuals with PAD. Choice D is incorrect as applying ice to the feet daily can further reduce blood flow to the extremities, worsening the condition in PAD.

3. What is the most appropriate intervention for a client with phlebitis at the IV site?

Correct answer: B

Rationale: The most appropriate intervention for a client with phlebitis at the IV site is to discontinue the IV and notify the provider. Phlebitis is inflammation of the vein, and continuing the IV can lead to complications such as infection or thrombosis. Applying a warm compress may provide symptomatic relief but does not address the root cause. Increasing the IV flow rate is not indicated and may worsen the inflammation. Monitoring for signs of infection is important, but the priority is to remove the source of inflammation by discontinuing the IV.

4. A nurse is preparing to administer digoxin to a client who has heart failure. Which of the following findings should indicate to the nurse that the medication has been effective?

Correct answer: A

Rationale: The correct answer is A: Cardiac workload decreases. Digoxin helps reduce cardiac workload in clients with heart failure, improving symptoms. This reduction in workload indicates that the medication is effective. Choice B, blood pressure increases, is incorrect because digoxin typically does not directly affect blood pressure. Choice C, respiratory rate increases, is incorrect as an increased respiratory rate is not a typical indicator of digoxin effectiveness. Choice D, temperature decreases, is also incorrect as digoxin does not typically affect body temperature.

5. What term refers to the agreement to keep promises?

Correct answer: A

Rationale: The term 'fidelity' specifically refers to the agreement to keep promises. Fidelity in healthcare ethics emphasizes the importance of healthcare professionals keeping their commitments to patients. Choice B, 'Non-maleficence,' relates to the ethical principle of doing no harm. Choice C, 'Autonomy,' refers to respecting a patient's right to make decisions about their own healthcare. Choice D, 'Justice,' pertains to fairness and equality in the distribution of healthcare resources.

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