ATI LPN
Critical Care Respiratory Questions Questions
Question 1 of 5
Doctor's order: 750 mL NS to infuse over 8 hours. How many mL/hr will you set the IV pump? Round to the nearest whole number.
Correct Answer: A
Rationale: 750 mL ÷ 8 hr = 93.75 mL/hr, rounded to 94 mL/hr.
Question 2 of 5
Which term refers to the exchange of oxygen and carbon dioxide at the alveolar level?
Correct Answer: C
Rationale: Diffusion is the process where oxygen moves from alveoli to blood and carbon dioxide moves from blood to alveoli, occurring at the alveolar-capillary membrane.
Question 3 of 5
Which assessment finding indicates ineffective oxygenation?
Correct Answer: C
Rationale: Cyanosis (bluish skin) indicates poor oxygenation due to low oxygen saturation, unlike clear lung sounds, normal pulse oximetry, or stable blood pressure.
Question 4 of 5
A nurse hears crackles in a patient’s lungs. What does this suggest?
Correct Answer: B
Rationale: Crackles indicate fluid in alveoli, typical of pulmonary edema, not pneumothorax (collapsed lung), emphysema (air trapping), or asthma (wheezing).
Question 5 of 5
A patient with a pulse oximetry reading of 88% requires which intervention?
Correct Answer: B
Rationale: A pulse oximetry of 88% indicates hypoxemia (normal is 95-100%). Administering oxygen is the priority to correct low oxygen levels, over coughing, repositioning, or checking temperature.