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. What should a healthcare professional assess in a patient presenting with symptoms of a stroke?

Correct answer: A

Rationale: When assessing a patient with suspected stroke symptoms, it is crucial to check for facial drooping as it can be a sign of facial nerve weakness, which is a common indicator of stroke. While monitoring speech difficulties and evaluating arm weakness are also important assessments in stroke cases, they are secondary to facial drooping. Checking for the time of onset of symptoms is essential to determine eligibility for time-sensitive treatments like thrombolytic therapy, but when prioritizing assessments, facial drooping takes precedence.

3. During an initial assessment of a client, a nurse notices a discrepancy between the client's current IV infusion and the information received during the shift report. Which of the following actions should the nurse take?

Correct answer: B

Rationale: The correct action for the nurse to take when noticing a discrepancy between the client's current IV infusion and the information received during the shift report is to compare the current infusion with the prescription in the client's medication record. This step is crucial to ensure the accuracy of the prescribed treatment and to prevent any potential harm to the client. Option A is incorrect because completing an incident report should only be done after verifying the discrepancy. Option C is incorrect as contacting the charge nurse should come after confirming the details. Option D is incorrect as submitting a written warning is not appropriate without verifying the information first.

4. How should a healthcare professional respond to a patient with diabetic ketoacidosis (DKA)?

Correct answer: D

Rationale: When managing a patient with diabetic ketoacidosis (DKA), it is crucial to administer insulin to lower blood sugar levels, administer IV fluids to correct dehydration and electrolyte imbalances, and monitor blood glucose levels regularly to ensure they are within the target range. Therefore, all of the above options are essential components of the comprehensive treatment plan for DKA. Administering insulin alone may lower blood sugar levels but will not address the fluid and electrolyte imbalances seen in DKA. Similarly, administering IV fluids alone may help with dehydration but will not address the high blood sugar levels or the need for insulin. Monitoring blood glucose alone is not sufficient to treat DKA; it must be accompanied by appropriate interventions to address the underlying causes and complications of the condition.

5. What is the priority in managing a client diagnosed with delirium?

Correct answer: B

Rationale: The priority in managing a client diagnosed with delirium is to identify any underlying causes. Delirium can be caused by various factors such as infections, medications, or metabolic imbalances. By determining the root cause, healthcare providers can address the issue effectively and tailor the treatment plan accordingly. Administering anti-anxiety medication (Choice A) may help manage symptoms but does not address the underlying cause of delirium. Similarly, reducing environmental stimulation (Choice C) and encouraging deep breathing exercises (Choice D) may provide some relief, but they do not target the primary concern of identifying and addressing the underlying causes of delirium.

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