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 is the priority nursing intervention for a patient with chest pain?

Correct answer: A

Rationale: The correct answer is to administer nitroglycerin. Nitroglycerin is the priority intervention for a patient with chest pain because it helps relieve chest pain by dilating coronary arteries, improving blood flow to the heart muscle. Assessing pain level, monitoring vital signs, and providing oxygen therapy are important interventions as well, but administering nitroglycerin takes precedence in addressing the immediate symptom of chest pain and potential cardiac ischemia.

3. A nurse is providing discharge instructions for a client using home oxygen. What is the most important safety measure?

Correct answer: B

Rationale: The correct answer is B: Ensure that oxygen tanks are kept upright and away from heat sources. This is the most important safety measure to prevent accidents related to home oxygen use. Storing oxygen tanks in a closet when not in use (choice A) is not recommended as they should be stored in a well-ventilated area. Allowing family members to smoke in designated areas (choice C) poses a significant fire hazard. Restricting fluid intake while using oxygen (choice D) is not a safety measure related to oxygen use.

4. Which dietary instruction is appropriate for a client with chronic kidney disease?

Correct answer: B

Rationale: Limiting the intake of phosphorus-rich foods is appropriate for a client with chronic kidney disease. In individuals with chronic kidney disease, the kidneys cannot filter phosphorus effectively, leading to a buildup in the blood. This can result in bone and heart problems. Therefore, reducing phosphorus intake is crucial to prevent complications. Choices A, C, and D are incorrect. Increasing potassium intake may be harmful as potassium levels can accumulate in the blood with impaired kidney function. Encouraging protein-rich foods may not be suitable as excessive protein intake can strain the kidneys. Advising to increase fluid intake should be done cautiously as individuals with chronic kidney disease may need to restrict fluids based on their stage of the disease.

5. How should a healthcare provider respond to a patient experiencing a seizure?

Correct answer: D

Rationale: When a patient is experiencing a seizure, the immediate priority is to ensure their safety by placing them in a side-lying position. This helps prevent aspiration in case of vomiting and maintains an open airway. Administering anticonvulsant medications is not within the scope of a healthcare provider's immediate response during a seizure. Applying restraints can potentially harm the patient by restricting movement and causing injury. Monitoring for post-ictal confusion is important after the seizure has ended, but the primary concern during the seizure is ensuring the patient's safety.

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