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 nurse is reinforcing teaching about wound care for a client who has a wound requiring irrigation. What is an important instruction?

Correct answer: B

Rationale: The correct answer is to cleanse the wound from the center outwards. This technique helps reduce the risk of contamination by pushing debris away from the wound. Option A, wearing sterile gloves, is important for infection control but not specifically related to wound irrigation. Option C, keeping the wound dry, is not suitable for wound irrigation, which often involves using solutions to clean the wound. Option D, applying an antimicrobial ointment, is not typically done during wound irrigation as the focus is on cleansing the wound.

3. A nurse manager is updating protocols for belt restraints. Which of the following guidelines should the nurse include?

Correct answer: A

Rationale: The correct answer is A: Document the client's condition every 15 minutes. When using belt restraints, it is crucial to document the client's condition regularly to ensure their safety and well-being. This guideline allows for ongoing assessment of the client's need for restraints and any potential adverse effects. Choice B is incorrect as restraints should not be attached to the bed frame but to a non-moving part of the bed to prevent harm in case of bed movement. Choice C is incorrect as PRN (as needed) restraint prescription should not be a routine practice and should only be considered after other interventions have been attempted. Choice D is incorrect as restraints should be removed and reevaluated based on the client's condition, not solely on a fixed time schedule.

4. A nurse is reviewing the plan of care for a client who is receiving total parenteral nutrition (TPN). Which of the following interventions should the nurse include?

Correct answer: B

Rationale: The correct answer is B: 'Monitor blood glucose levels.' When a client is receiving total parenteral nutrition (TPN), which has a high glucose content, it is crucial to monitor blood glucose levels closely to prevent hyperglycemia. Monitoring daily fluid intake (Choice A) is important in other contexts but is not directly related to TPN administration. Measuring intake and output (Choice C) is a general nursing intervention that is relevant for assessing fluid balance but is not specific to TPN administration. Administering insulin as prescribed (Choice D) may be necessary for clients with hyperglycemia, but this intervention is based on the blood glucose monitoring results and the healthcare provider's orders, not a standard intervention for all clients receiving TPN.

5. How should a healthcare provider manage care for a patient with a wound infection?

Correct answer: A

Rationale: When managing care for a patient with a wound infection, administering prescribed antibiotics is crucial. Antibiotics are necessary to treat the infection and prevent it from worsening. While cleaning the wound with saline and applying a sterile dressing are important components of wound care, the primary treatment for a wound infection is antibiotics. Monitoring for signs of sepsis is also essential, but administering antibiotics promptly is the most critical step in managing a wound infection.

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