How much oxygen does a nasal cannula deliver?
A nasal cannula delivers approximately 24–44% FiO2 (fraction of inspired oxygen) at flow rates of 1–6 LPM. Each liter per minute of oxygen flow increases FiO2 by approximately 4%: 1 LPM = ~24%, 2 LPM = ~28%, 3 LPM = ~32%, 4 LPM = ~36%, 5 LPM = ~40%, 6 LPM = ~44%. This is appropriate for mild to moderate hypoxia. For severe hypoxia requiring higher FiO2 (>50%), upgrade to a non-rebreather mask.
Can I use the nasal cannula with the MED-TAC Mini O2 Regulator?
Yes. The MED-TAC Nasal Cannula (MEDTAC1109) is compatible with the MED-TAC Mini O2 Regulator (MEDTAC1110), which fits any tank with a CGA870 fitting including the MED-TAC Size D Oxygen Cylinder. The regulator's flow rate is adjustable from 0–15 LPM, providing appropriate flow for nasal cannula use (1–6 LPM) as well as higher flows for a non-rebreather mask (10–15 LPM).
What is the difference between a nasal cannula and a non-rebreather mask?
A nasal cannula delivers 24–44% FiO2 at 1–6 LPM and is comfortable for ambulatory patients; it allows speaking, eating, and clear airway assessment without removing the device. A non-rebreather mask delivers 60–80% FiO2 at 10–15 LPM and is used for patients requiring high-concentration oxygen. The cannula is the first-choice device for mild to moderate hypoxia; the NRB is used when maximum non-invasive oxygen delivery is required.
At what flow rate should I run a nasal cannula?
Flow rates above 6 LPM through a nasal cannula are not recommended — at higher flows, the cannula does not increase FiO2 meaningfully but does cause nasal mucosal drying and patient discomfort. For flows above 6 LPM, switch to a simple face mask or non-rebreather mask. Standard clinical starting points: SpO2 below 94% with mild distress — start 2–4 LPM nasal cannula and titrate to target SpO2 ≥94%.
Is this nasal cannula single-use?
Yes. The MED-TAC Nasal Cannula Oxygen Tubing is a single-use disposable device. Reusing nasal cannulas between patients is a significant infection control risk and is contraindicated in clinical practice. Each patient encounter should use a fresh, individually packaged cannula. The disposable design also ensures the cannula's material integrity is maintained for consistent and safe oxygen delivery.
