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. How should a healthcare provider care for a patient with a nasogastric (NG) tube?

Correct answer: A

Rationale: When caring for a patient with a nasogastric (NG) tube, it is crucial to check the tube placement and assess for signs of aspiration. This ensures that the tube is correctly positioned and that the patient is not at risk of complications such as aspiration pneumonia. Choice B is incorrect as flushing the tube with water regularly is not a standard practice and may not be appropriate for all patients. Choice C is incorrect as monitoring for bowel sounds is not directly related to NG tube care, and administering medications is not the primary focus of caring for the tube itself. Choice D is incorrect because administering medications through the NG tube is a specific action that may be taken based on a healthcare provider's order, not a general care guideline for the NG tube.

3. A client with heart failure is on a fluid restriction. What should the nurse include in the discharge teaching?

Correct answer: B

Rationale: The correct answer is B: 'Monitor the client's weight daily.' In clients with heart failure on fluid restriction, monitoring daily weight is crucial to track fluid balance. This allows healthcare providers to assess if the client is retaining excess fluid, a common issue in heart failure. Choices A, C, and D are incorrect. Encouraging the client to drink more water contradicts the fluid restriction; avoiding drinking water after 6 PM is not specific to managing fluid restriction; and monitoring fluid intake only during meals does not provide a comprehensive assessment of fluid balance throughout the day.

4. What is the best approach to assist a client in performing self-care after an acute myocardial infarction, when the client expresses concern about fatigue?

Correct answer: B

Rationale: The best approach to assist a client in performing self-care after an acute myocardial infarction, especially when the client expresses concern about fatigue, is to gradually resume self-care tasks while focusing on rest periods. This approach allows the client to build confidence in managing their self-care activities while also addressing the issue of fatigue. Choice A is incorrect as it focuses on asking for assistance rather than promoting self-care. Choice C is inappropriate as it suggests delegating the client's self-care tasks to assistive personnel instead of empowering the client. Choice D is incorrect as it can lead to deconditioning and is not conducive to the client's recovery process.

5. A client with IV fluids has developed redness and warmth at the IV site. What is the next step the nurse should take?

Correct answer: B

Rationale: When a client develops redness and warmth at the IV site, it is indicative of phlebitis, which is inflammation of the vein. The next step for the nurse should be to discontinue the IV and notify the healthcare provider. Applying a cold compress may provide temporary relief but does not address the underlying issue. Monitoring for infection is important, but in this case, the presence of redness and warmth suggests phlebitis, not infection. Increasing the IV flow rate can exacerbate the inflammation and should be avoided.

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