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 nurse is preparing to administer enoxaparin subcutaneously to a client. Which of the following actions should the nurse take?

Correct answer: D

Rationale: The correct action the nurse should take when administering enoxaparin subcutaneously is to pinch the skin between the thumb and forefinger. Pinching the skin helps to lift the subcutaneous tissue, reducing the risk of injecting into the muscle. Choices A, B, and C are incorrect. Choice A is not relevant as the injection site for enoxaparin is typically in the abdomen or thigh, not the arm. Choice B is incorrect as pulling the skin laterally is not a recommended technique for subcutaneous injections. Choice C is also incorrect as massaging the injection site after administration can increase the risk of bleeding or bruising.

3. A nurse has agreed to serve as an interpreter for an older adult client who is assigned to another nurse. Which of the following statements by the nurse indicates an understanding of this role?

Correct answer: A

Rationale: Choice A is correct because the nurse should inform the client of their availability to interpret, ensuring that communication is clear and culturally appropriate. Choice B is incorrect as interpreters in healthcare settings usually do not receive fees for providing interpretation services. Choice C is incorrect because suggesting the use of a family member as an interpreter may not ensure accurate communication, as they may not be trained or impartial. Choice D is incorrect because stating that an interpreter is unavailable during the night shift does not address the current situation where the nurse has agreed to interpret for the client.

4. What is an appropriate teaching point for a client with left-leg weakness learning to use a cane?

Correct answer: A

Rationale: The correct teaching point for a client with left-leg weakness learning to use a cane is to maintain two points of support on the ground at all times. This ensures stability and helps prevent falls. Choice B, using the cane on the weak side of the body, may lead to imbalance and decreased support. Choice C, advancing the cane a specific distance with each step, is not as crucial as maintaining two points of support. Choice D, advancing the cane and the strong leg simultaneously, may also compromise stability and support for the weak leg.

5. A nurse is preparing to administer a blood transfusion. What is the first action?

Correct answer: B

Rationale: The correct first action when preparing to administer a blood transfusion is to verify the client's blood type before starting the transfusion. This step is crucial to prevent transfusion reactions and complications. Option A is incorrect because blood transfusions should not be administered through an IV push due to the risk of rapid infusion and adverse reactions. Option C is incorrect because blood should be transfused at room temperature, not body temperature. Option D is incorrect because it is not necessary for the client to eat before a blood transfusion.

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