![iMED on Twitter: "These devices are commonly classified as low flow or high flow systems based on the flow rate. Low flow systems (nasal cannula, face mask, face tent) are usually < iMED on Twitter: "These devices are commonly classified as low flow or high flow systems based on the flow rate. Low flow systems (nasal cannula, face mask, face tent) are usually <](https://pbs.twimg.com/media/FAi7GPtWEAEgMl6.png)
iMED on Twitter: "These devices are commonly classified as low flow or high flow systems based on the flow rate. Low flow systems (nasal cannula, face mask, face tent) are usually <
![PDF] Oropharyngeal Oxygen Concentration Is Dependent on the Oxygen Mask System and Sampling Location | Semantic Scholar PDF] Oropharyngeal Oxygen Concentration Is Dependent on the Oxygen Mask System and Sampling Location | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/17b476559ab3acc565a7dbd222c44cc652a16d44/2-Table1-1.png)
PDF] Oropharyngeal Oxygen Concentration Is Dependent on the Oxygen Mask System and Sampling Location | Semantic Scholar
![emDOCs.net – Emergency Medicine EducationCOVID-19: Oxygen Escalation Therapy and Noninvasive Ventilation - emDOCs.net - Emergency Medicine Education emDOCs.net – Emergency Medicine EducationCOVID-19: Oxygen Escalation Therapy and Noninvasive Ventilation - emDOCs.net - Emergency Medicine Education](http://www.emdocs.net/wp-content/uploads/2020/04/ROX-Index.png)
emDOCs.net – Emergency Medicine EducationCOVID-19: Oxygen Escalation Therapy and Noninvasive Ventilation - emDOCs.net - Emergency Medicine Education
Fraction of Inspired Oxygen (FiO2) For all supplemental oxygen delivery devices, the patient is not just breathing the direct ox
![Matthew Ho, MD PhD 🇸🇬 on Twitter: "3c. Venturi facemask - Unlike simple and non-rebreather facemasks where you set the oxygen flow rate, you set FiO2 here (24%-60%) - BLUE = 2-4L/min = Matthew Ho, MD PhD 🇸🇬 on Twitter: "3c. Venturi facemask - Unlike simple and non-rebreather facemasks where you set the oxygen flow rate, you set FiO2 here (24%-60%) - BLUE = 2-4L/min =](https://pbs.twimg.com/media/FMe74sZX0AUY3Is.png)
Matthew Ho, MD PhD 🇸🇬 on Twitter: "3c. Venturi facemask - Unlike simple and non-rebreather facemasks where you set the oxygen flow rate, you set FiO2 here (24%-60%) - BLUE = 2-4L/min =
![Nasal Cannula, Venturi Face Mask, Simple Face Mask, Non Rebreather Face Mask | Emergency medicine, Nursing information, Respiratory therapy Nasal Cannula, Venturi Face Mask, Simple Face Mask, Non Rebreather Face Mask | Emergency medicine, Nursing information, Respiratory therapy](https://i.pinimg.com/originals/6a/08/13/6a0813d18f17005d34e5f4f6f2ad1e82.jpg)