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 assisting with an in-service about hepatitis A for a group of staff nurses. The nurse should include that hepatitis A is transmitted through which of the following methods?

Correct answer: D

Rationale: The correct answer is D: Consumption of contaminated food. Hepatitis A is primarily transmitted through the ingestion of contaminated food or water. Airborne droplets and sexual contact are not common modes of transmission for hepatitis A. While contact with contaminated surfaces can play a role in the spread of some infections, hepatitis A is not typically transmitted through this route.

3. A nurse is collecting data from a client who is experiencing a situational crisis following the loss of a job. The client states, 'I don't think I can go through this again.' Which of the following actions is the nurse's priority?

Correct answer: A

Rationale: The priority is to determine if the client is experiencing psychotic thinking or suicidal ideation. In this situation, the nurse needs to assess if the client is having distorted thoughts or losing touch with reality, which could pose an immediate risk to the client's safety. While determining the client's support system, asking how the client copes with stress, and assessing vital signs are important aspects of care, they are not the priority when there is a concern about potential psychotic thinking or suicidal ideation.

4. A nurse is reviewing the medical record of a client with dementia who frequently becomes agitated. What should the nurse prioritize?

Correct answer: B

Rationale: The correct answer is to investigate the client's recent medication changes. In a client with dementia who frequently becomes agitated, medication changes can often be a significant factor contributing to their behavior. Checking recent medication changes can help identify if any specific medication is causing or exacerbating the agitation. Choice A about fluid and electrolyte balance is less likely to be the priority unless there are specific indications in the medical record. Choice C, investigating recent changes in cognitive functioning, may be important but addressing the agitation first is a more immediate concern. Choice D, investigating the client's psychosocial environment, is also important but may not directly address the immediate cause of the agitation as medication changes could.

5. A nurse is caring for a client who is at 41 weeks of gestation and is receiving oxytocin for labor induction. The nurse notes early decelerations on the fetal heart rate monitor. Which of the following nursing actions should the nurse take?

Correct answer: A

Rationale: The correct action for early decelerations, which are caused by fetal head compression and are considered normal during labor, is to continue monitoring the fetal heart rate. Early decelerations mirror contractions and usually do not require any intervention. Stopping the oxytocin infusion (Choice B) is not necessary as early decelerations are not typically a cause for concern related to oxytocin. Performing a vaginal examination (Choice C) or initiating an amnioinfusion (Choice D) are unnecessary and not indicated specifically for early decelerations.

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