ATI LPN
PN ATI Comprehensive Predictor
1. What are the primary causes of respiratory acidosis?
- A. Hypoventilation and lung disease
- B. Hyperventilation and pneumonia
- C. Increased oxygen saturation and tachypnea
- D. Dehydration and hypoxia
Correct answer: A
Rationale: The correct answer is A: Hypoventilation and lung disease. Respiratory acidosis occurs when there is an accumulation of CO2 in the body due to inadequate ventilation. Hypoventilation, which reduces the elimination of CO2, and lung diseases that impair gas exchange are the primary causes. Choice B is incorrect because hyperventilation, not hypoventilation, leads to respiratory alkalosis, not acidosis. Choice C is incorrect because increased oxygen saturation and tachypnea do not directly cause respiratory acidosis. Choice D is incorrect as dehydration and hypoxia do not typically lead to respiratory acidosis.
2. A nurse is assessing a client who has right-sided heart failure. Which of the following findings should the nurse expect?
- A. Elevated blood glucose.
- B. Decreased urine output.
- C. Dependent edema.
- D. Jaundice.
Correct answer: C
Rationale: The correct answer is C: Dependent edema. In right-sided heart failure, the heart is unable to effectively pump blood to the lungs for oxygenation, leading to fluid accumulation in the systemic circulation. This fluid backs up in the venous system, causing increased pressure in the veins of the body, resulting in dependent edema, usually starting in the lower extremities. Elevated blood glucose (choice A) is not directly related to right-sided heart failure. Decreased urine output (choice B) may occur in conditions like acute kidney injury but is not a specific finding of right-sided heart failure. Jaundice (choice D) is more commonly associated with liver dysfunction, not typically seen in right-sided heart failure.
3. A nurse manager is discussing the responsibility of nurses caring for clients who have Clostridium difficile. Which of the following information should the nurse include in the teaching?
- A. Assign the client to a room with a negative air-flow system
- B. Use alcohol-based hand sanitizer when leaving the client's room
- C. Clean contaminated surfaces in the client's room with a phenol solution
- D. Have family members wear a gown and gloves when visiting
Correct answer: D
Rationale: The correct answer is D because having family members wear a gown and gloves when visiting a client with Clostridium difficile is essential to prevent the spread of infection. Options A, B, and C are incorrect. Negative air-flow systems are not necessary for preventing the spread of C. difficile. While alcohol-based hand sanitizers are effective for routine hand hygiene, they may not be sufficient for C. difficile. Cleaning contaminated surfaces with a phenol solution is not the most effective method for preventing the spread of C. difficile, as spores can be resistant to many disinfectants.
4. The nurse is performing triage on a group of clients in the emergency department. Which of the following clients should the nurse see first?
- A. A 12-year-old oozing blood from a laceration on the left thumb due to a cut from a rusty metal can
- B. A 19-year-old with a fever of 103.8°F who is able to identify her sister but not the place and time
- C. A 49-year-old with a compound fracture of the right leg who is complaining of severe pain
- D. A 65-year-old with a flushed face, dry mucous membranes, and a blood sugar of 470 mg/dL
Correct answer: B
Rationale: The correct answer is B. A 19-year-old with a fever of 103.8°F who is confused and unable to orient to place and time likely has a severe infection or a serious medical condition affecting the central nervous system. This client needs immediate attention as altered mental status combined with a high fever can indicate a life-threatening situation. Choices A, C, and D present important conditions that require medical care, but they are not as urgent as the 19-year-old with a high fever and confusion. The 12-year-old with a laceration may require treatment for bleeding and a tetanus shot, the 49-year-old with a compound fracture needs urgent orthopedic intervention, and the 65-year-old with a high blood sugar is concerning for hyperglycemia but can wait momentarily compared to the client with a fever and altered mental status.
5. A client post-lumbar puncture should be in which position?
- A. High Fowler's position
- B. Prone position
- C. Supine position
- D. Sitting position
Correct answer: C
Rationale: The most appropriate position for a client post-lumbar puncture is the supine position. Placing the client in a supine position helps prevent spinal headaches by allowing the puncture site to seal effectively and reducing the risk of cerebrospinal fluid leakage. High Fowler's position, prone position, and sitting position are not recommended after a lumbar puncture as they may increase the risk of complications like spinal headaches.
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