ATI RN
Chapter 41 Oxygenation NCLEX Questions Questions
Question 1 of 5
A nurse is caring for a patient who has been hospitalized for an acute asthma exacerbation. Which testing method might the nurse use to measure the patient's oxygen saturation?
Correct Answer: B
Rationale: Pulse oximetry is used to obtain baseline information about the patient's oxygen saturation level and is also performed for patients with asthma. Diffusion capacity estimates the patient's ability to absorb alveolar gases and determines if a gas exchange problem exists. Maximal respiratory pressures help evaluate neuromuscular causes of respiratory dysfunction. Both tests are usually performed by a respiratory therapist. The physician or other advanced practice professional can perform a thoracentesis at the bedside with the nurse assisting, or in the radiology department.
Question 2 of 5
Which of the following foods lowers the cardiac sphincter pressure?
Correct Answer: D
Rationale: Fatty foods and caffeine (e.g., coffee with coffee mate, bacon) lower cardiac sphincter pressure, increasing reflux risk.
Question 3 of 5
A client taking Coumadin is to be educated on his diet. As a nurse, which of the following food should you instruct the client to avoid?
Correct Answer: A
Rationale: Green leafy vegetables and liver are high in Vitamin K, which antagonizes Coumadin (warfarin), reducing its anticoagulant effect.
Question 4 of 5
Which of the following is correct in NGT feeding?
Correct Answer: B
Rationale: The feeding height of 12 inches ensures a slow, safe infusion rate via gravity, preventing complications.
Question 5 of 5
Oxygen at the rate of 2 LPM through nasal cannula is prescribed for a client with COPD. Which of the following statements best describes why the oxygen therapy is maintained at a relatively low concentration?
Correct Answer: D
Rationale: In COPD, high O2 can suppress the hypoxic drive, reducing respiratory stimulus due to chronic CO2 retention.