ATI RN
Oxygenation NCLEX Questions Quizlet Questions
Question 1 of 5
A vitamin taken in conjunction with ISONIAZID to prevent peripheral neuritis
Correct Answer: D
Rationale: Vitamin B6 is given with isoniazid to prevent peripheral neuritis, a side effect due to B6 depletion.
Question 2 of 5
A nurse is assessing a client with a suspected diagnosis of pulmonary emphysema. The nurse assesses the client for which sign that distinguishes emphysema from chronic bronchitis?
Correct Answer: B
Rationale: Emphysema is characterized by marked dyspnea due to alveolar destruction, whereas chronic bronchitis features copious sputum and cough preceding dyspnea.
Question 3 of 5
Which of the following is an indication for Hyperbaric Oxygen Therapy?
Correct Answer: B
Rationale: Hyperbaric oxygen therapy is indicated for wound healing (e.g., diabetic ulcers) by increasing oxygen delivery to tissues, unlike the other conditions listed.
Question 4 of 5
Which of the following would be a contraindication to use an HME on a mechanically ventilated patient?
Correct Answer: B
Rationale: A large bronchopleural fistula causes significant air leak, making an HME (heat moisture exchanger) ineffective, unlike the other conditions which are not absolute contraindications.
Question 5 of 5
If air is breathed at 14000 ft where the barometric pressure is 450 mmHg, the alveolar oxygen tension will be:
Correct Answer: A
Rationale: PAO₂ = FiO₂ (PB - PH₂O) - (PaCO₂ / RQ). At 14,000 ft, PB = 450 mmHg, PH₂O = 47 mmHg, FiO₂ = 0.21, PaCO₂ = 40 mmHg, RQ = 0.8. PAO₂ = 0.21 (450 - 47) - (40 / 0.8) = 35 mmHg.