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Amazon.com: 4 Pack Nasal Oxygen Covers Cannula Cushions Soft Cannula Face Protectors for Oxygen Users Reduce Face Irritation : Health & Household
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Amazon.com: Southmedic OxyArm Plus with Adjustable Headband & Tubing |Designed for Nose, Mouth Breathers| Oxygen Delivery Device| Ideal for Burn Units, Trauma Centres & Home Care : Health & Household
![A nasal cannula was placed in the patient's mouth to supply oxygen.... | Download Scientific Diagram A nasal cannula was placed in the patient's mouth to supply oxygen.... | Download Scientific Diagram](https://www.researchgate.net/publication/315933734/figure/fig1/AS:497200506642432@1495553246209/A-nasal-cannula-was-placed-in-the-patients-mouth-to-supply-oxygen-Drug-induced-sleep.png)