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 nurse's responsibility when caring for a client with a chest tube?

Correct answer: A

Rationale: The correct answer is to check for air leaks in the tubing every 4 hours when caring for a client with a chest tube. This responsibility is crucial because it ensures proper chest tube function and helps prevent complications such as pneumothorax or hemothorax. Clamping the chest tube (Choice B) can lead to serious issues by causing a tension pneumothorax. Encouraging deep breathing and coughing (Choice C) is important for respiratory hygiene but is not directly related to chest tube care. Keeping the client in a high Fowler's position (Choice D) may be beneficial for some conditions but is not specific to chest tube management.

3. What are the nursing considerations when administering blood products?

Correct answer: A

Rationale: The correct answer is A: Monitor vital signs and check for allergic reactions. When administering blood products, monitoring vital signs such as blood pressure, heart rate, and temperature is crucial to detect any adverse reactions promptly. Checking for allergic reactions, such as hives, itching, or difficulty breathing, is essential to ensure patient safety. Choice B is incorrect because verifying blood type and compatibility is typically done by the laboratory before the blood is issued for transfusion. Choice C is not a direct nursing consideration during the administration of blood products. While monitoring for signs of infection and sepsis is important in general patient care, it is not specific to blood transfusions. Choice D is also incorrect as ensuring consent is signed and preparing for possible reactions are important but do not directly relate to the immediate nursing considerations during blood product administration.

4. What are the nursing priorities for a patient experiencing an asthma exacerbation?

Correct answer: A

Rationale: The correct nursing priority for a patient experiencing an asthma exacerbation is to administer a bronchodilator. Bronchodilators help in relieving bronchoconstriction and improving breathing. While encouraging deep breathing, providing oxygen therapy, and monitoring oxygen saturation are essential aspects of managing asthma exacerbation, the priority is to administer a bronchodilator to address the acute bronchoconstriction.

5. What are the key differences between hypoglycemia and hyperglycemia?

Correct answer: A

Rationale: Hypoglycemia typically presents with sweating and trembling, while hyperglycemia is characterized by frequent urination and thirst. Therefore, the correct key differences between hypoglycemia and hyperglycemia are that hypoglycemia includes symptoms like sweating and trembling, while hyperglycemia involves symptoms such as frequent urination and thirst. Choices B, C, and D are incorrect because they do not accurately represent the characteristic symptoms of hypoglycemia and hyperglycemia, as stated in the question.

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