ATI RN
Chapter 41 Oxygenation NCLEX Questions Questions
Question 1 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 2 of 5
Which of the following statements regarding the use of an oral airway is correct?
Correct Answer: B
Rationale: Insertion of an oral airway can injure the hard palate if not done carefully, making this statement correct.
Question 3 of 5
While ventilating a patient with a set peak inspiratory pressure of 20 cmH₂O, the physician order you to increase the PEEP from 5 to 10 cmH₂O. Based on the above change the tidal volume will decrease.
Correct Answer: A
Rationale: In pressure control ventilation, increasing PEEP from 5 to 10 cmH₂O with a fixed PIP of 20 cmH₂O reduces the pressure gradient (PIP - PEEP) from 15 to 10 cmH₂O, decreasing tidal volume.
Question 4 of 5
Lidocaine falls into which class of anti-arrythmic medications?
Correct Answer: B
Rationale: Lidocaine is a Class 1b antiarrhythmic, affecting sodium channels to treat ventricular arrhythmias.
Question 5 of 5
Select the correct statement when comparing the results of an arterial to venous blood gas:
Correct Answer: B
Rationale: Venous blood has a lower pH than arterial due to higher CO₂ levels from tissue metabolism.