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 caring for a client who is scheduled for surgery in the morning. The nurse learns that the client has decided not to have surgery even though they have already signed the informed consent form. Which of the following actions should the nurse take?

Correct answer: B

Rationale: The correct action for the nurse to take is to report the client's decision to the provider who obtained informed consent. This ensures that the provider is informed of the client's change in decision and can discuss the situation further with the client. Choice A is incorrect as ignoring the client's decision is not appropriate and goes against the principles of patient autonomy. Choice C is incorrect because involving the family in convincing the client can be coercive and may not respect the client's autonomy. Choice D is incorrect because the nurse should not re-sign the informed consent form without the client's consent and a discussion with the provider.

3. A nurse is collecting data from an older adult client during a routine physical examination. Which of the following client statements should the nurse identify as a possible indication of maltreatment?

Correct answer: A

Rationale: The correct answer is A. Taking away a wallet to control spending is a form of financial maltreatment, which is a common form of abuse among older adults. Choices B, C, and D do not indicate maltreatment; rather, they show examples of care and concern from the son. Cooking meals, preventing the older adult from driving alone, and engaging in daily exercise are positive behaviors.

4. A client with active tuberculosis is receiving discharge instructions. Which statement by the client indicates an understanding of the teaching?

Correct answer: B

Rationale: The correct answer is B because the client should take antitubercular medications for a minimum of 6 months to ensure complete eradication of the infection. Choice A is incorrect as stopping the medication early can result in treatment failure and development of drug-resistant TB. Choice C is incorrect as regular TB skin tests are not needed once the client has been diagnosed and treated. Choice D is incorrect as wearing a mask at all times is not necessary for a client with active TB; proper cough etiquette should be followed instead.

5. What is the proper technique for administering an intramuscular (IM) injection?

Correct answer: A

Rationale: The correct technique for administering an intramuscular (IM) injection is to locate the injection site and insert the needle at a 90-degree angle. This angle ensures that the medication is delivered into the muscle for proper absorption. Choice B is incorrect because a 45-degree angle is typically used for subcutaneous injections, not intramuscular. Choice C is incorrect as massaging the site after an injection can cause the medication to disperse unevenly. Choice D is incorrect as a 15-degree angle would not reach the muscle layer effectively for an IM injection.

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