ATI LPN
LPN Fundamentals Final Exam Questions
Question 1 of 5
The purpose of oxygen reservoir bag in partial re-breathing mask is to:
Correct Answer: D
Rationale: The oxygen reservoir bag in a partial re-breathing mask stores oxygen, allowing the client to re-breathe the first third of exhaled air rich in oxygen, low in CO2 mixed with supplemental O2. This boosts FiO2 (40-60%) cost-effectively, ideal for moderate hypoxia (e.g., pneumonia). Encouraging CO2 re-breathing risks hypercapnia, opposite to intent. Reducing FiO2 contradicts the mask's purpose enhancing oxygen delivery. Precise FiO2 control fits non-rebreathing masks, not partial, which varies slightly. The re-breathing mechanism optimizes oxygen use, making this the correct function per respiratory care standards.
Question 2 of 5
An instrument used for auscultation is:
Correct Answer: C
Rationale: The stethoscope is the primary tool for auscultation.
Question 3 of 5
The correct sequence for assessing the abdomen is:
Correct Answer: D
Rationale: Auscultation precedes percussion and palpation to avoid altering bowel sounds.
Question 4 of 5
Which of the following nursing interventions promotes patient safety?
Correct Answer: D
Rationale: All interventions enhance safety by addressing mobility, communication, and identification.
Question 5 of 5
The nurse is assessing a 4 month-old infant. Which motor skill would the nurse anticipate finding?
Correct Answer: A
Rationale: Holding a rattle is a 4-month milestone; others develop later.