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 working in an acute care mental health facility and is assessing a client who has schizophrenia. Which of the following findings should the nurse expect?

Correct answer: C

Rationale: The correct answer is C: Disorganized speech. Disorganized speech is a hallmark symptom of schizophrenia, characterized by impaired thought processes that lead to incoherent, disjointed communication. All-or-nothing thinking (Choice A) is more commonly associated with cognitive distortions seen in conditions like anxiety disorders. Euphoric mood (Choice B) is not a typical finding in schizophrenia, as individuals with this disorder often display a flat or blunted affect. Hypochondriasis (Choice D) involves a preoccupation with having a serious illness and is not a primary symptom of schizophrenia.

3. A client who is postpartum is being taught about breast care by a nurse. Which of the following statements by the client indicates an understanding of the teaching?

Correct answer: B

Rationale: The correct answer is B. Nursing the baby frequently helps prevent engorgement and discomfort in breastfeeding mothers. Choice A is incorrect because tight-fitting bras can lead to clogged milk ducts and worsen discomfort. Choice C may lead to oversupply issues and is not necessary unless there is a specific indication. Choice D is incorrect as avoiding nursing for extended periods can lead to engorgement and decreased milk supply.

4. A client receiving chemotherapy has developed stomatitis. Which of the following interventions should the nurse implement?

Correct answer: B

Rationale: The correct intervention for a client with stomatitis is to encourage them to eat soft foods. Soft foods help prevent further irritation of the mouth, making it easier for the client to eat and reducing discomfort. Providing lemon-glycerin swabs could be too harsh on the already irritated mucosa. Avoiding toothpaste is relevant for clients with stomatitis to prevent further irritation. Instructing the client to use a mouthwash containing alcohol is contraindicated as alcohol can further irritate the mucosa.

5. A nurse is reviewing the laboratory results of a client who is undergoing screening for prostate cancer. The nurse should expect an elevation in which of the following laboratory values?

Correct answer: A

Rationale: The correct answer is A: Prostate-specific antigen (PSA). PSA is a marker specifically used for prostate cancer screening. Elevated levels of PSA can indicate prostate cancer or other prostate-related issues, prompting the need for further diagnostic investigations. Choices B, C, and D are not typically associated with prostate cancer screening. Human chorionic gonadotropin (hCG) is related to pregnancy, alpha-fetoprotein (AFP) is associated with liver and germ cell tumors, and carcinoembryonic antigen (CEA) is linked to colorectal cancer.

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