Which of the following factors will decrease the FIO₂ delivered by a low-flow O₂ system?
I.short inspiratory time
II.fast rate of breathing
III.lower O₂ input
IV.large minute ventilation

Question

Which of the following factors will decrease the FIO₂ delivered by a low-flow O₂ system? I.short inspiratory time II.fast rate of breathing III.lower O₂ input IV.large minute ventilation

Quizplus · Accepted Answer

All listed factors can decrease the fraction of inspired oxygen (FiO2) delivered by a low-flow oxygen system. Short inspiratory time and fast rate of breathing mean less time for oxygen to mix with room air, leading to a lower FiO2. Lower oxygen input directly reduces the amount of oxygen available for inhalation. Large minute ventilation increases the volume of air breathed per minute, diluting the oxygen concentration more with room air.

Which of the Following Factors Will Decrease the FIO2 Delivered

Which of the Following Factors Will Decrease the FIO₂ Delivered