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. A client with acute diverticulitis is receiving teaching from a nurse. Which of the following statements by the client indicates an understanding of the instructions?

Correct answer: A

Rationale: The correct answer is A. During acute diverticulitis, avoiding fiber is essential as it helps reduce irritation of the intestines. Choice B is incorrect because taking a laxative daily can exacerbate diverticulitis. Choice C is incorrect as IV fluids mainly provide hydration and electrolytes, not all essential nutrients. Choice D is incorrect because during acute diverticulitis, a low-fiber or liquid diet is typically recommended to rest the bowel.

3. A nurse is caring for a client with a chest tube post-surgery. What is the most important assessment?

Correct answer: B

Rationale: The correct answer is B: 'Check for air leaks and ensure proper chest tube function.' This is the most important assessment for a client with a chest tube post-surgery because it ensures that the chest tube is functioning properly. Checking for air leaks helps prevent complications such as pneumothorax or hemothorax. Choice A is incorrect because clamping the chest tube periodically can lead to serious complications and should not be done unless specifically ordered by a healthcare provider. Choice C is important for promoting lung expansion but is not the most critical assessment related to the chest tube. Choice D is also important for respiratory function but is not the priority when assessing a chest tube post-surgery.

4. A healthcare professional is reviewing the medical records of a client who has a pressure ulcer. Which of the following is an expected finding?

Correct answer: A

Rationale: A serum albumin level of 3 g/dL is indicative of poor nutrition, which is commonly associated with pressure ulcers. This finding suggests that the client may be at risk for developing or already has a pressure ulcer due to malnutrition. High-density lipoprotein (HDL) level of 90 mg/dL (Choice B) is not directly related to pressure ulcers. The Norton scale (Choice C) is used to assess a client's risk of developing pressure ulcers, not as a finding in a client with an existing pressure ulcer. The Braden scale (Choice D) is also a tool used to assess the risk of developing pressure ulcers, not a finding in a client with an existing pressure ulcer.

5. Which instruction is crucial for a client with diabetes being discharged?

Correct answer: B

Rationale: Administering insulin before meals as prescribed is crucial for a client with diabetes being discharged because it ensures proper blood sugar control. Choice A is incorrect because insulin should not be taken only when feeling unwell; it should be taken as prescribed. Choice C is incorrect as monitoring blood sugar levels weekly may not provide timely adjustments to insulin doses. Choice D is incorrect as checking blood sugar only once in the morning is not sufficient for proper diabetes management.

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