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 preparing to administer medications to a client who is NPO and is receiving enteral feedings through an NG tube. Which of the following prescriptions should the nurse clarify with the provider?

Correct answer: B

Rationale: The nurse should clarify prescription B, Acetaminophen 650 mg PO BID, with the provider. When a patient is NPO and receiving enteral feedings through an NG tube, medications administered orally may be contraindicated due to the risk of aspiration. Therefore, Acetaminophen should be confirmed for safety in this situation. The other options (Metoprolol ER 50 mg via NG tube BID, Lisinopril 10 mg PO daily, Ondansetron 4 mg IV push PRN) are appropriate and do not need clarification in this scenario.

3. What is the correct procedure for inserting a nasogastric (NG) tube?

Correct answer: A

Rationale: The correct procedure for inserting a nasogastric (NG) tube involves measuring the tube to ensure the appropriate length for insertion and using lubrication to reduce discomfort and aid in smooth insertion. Choice B is incorrect as measuring the tube is essential for proper placement. Choice C is incorrect as lubrication helps in easing the insertion process. Choice D is incorrect as checking the placement comes after insertion and should not be done simultaneously with the insertion process.

4. A nurse has administered medications to a group of clients. For which of the following client situations should the nurse complete an incident report?

Correct answer: B

Rationale: The correct answer is B because administering insulin lispro to an NPO client can lead to hypoglycemia due to the lack of food to balance the medication. This situation poses a serious risk to the client's safety and should be documented in an incident report. Choice A is not as critical as insulin administration for an NPO client. Choice C is also serious but does not pose an immediate risk to the client's health. Choice D, administering anticoagulants without checking the INR, is important but does not require an incident report unless adverse effects occur, as it may not immediately endanger the client's life.

5. What is the correct procedure for taking a telephone order from a provider?

Correct answer: A

Rationale: The correct procedure for taking a telephone order from a provider is to state the patient's name, drug, dose, route, frequency, and then read back the order to ensure accuracy. This process helps in preventing errors and ensures that all relevant information is correctly documented. Choice B is incorrect because having a witness listen to the order is not a standard practice and may not guarantee accuracy. Choice C is incorrect as verifying the order within 12 hours may lead to delays in patient care. Choice D is incorrect because waiting for the provider to verify the order during the next in-person visit could result in a significant delay in administering necessary medication.

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