Welding O2 in General Board Posted June 30, 2011 Good for you, G! So glad you stuck with it and found a good doctor. You are right that the tubes you put in your nose (called "nasal cannula") almost certainly won't help you. I've read of some people who said they did help with low-kip HAs in their early episodes of CH, but it seems like the frustration of trying them might be worse than waiting. Could you call the company that provided the oxygen and the cannula and tell them you need a non-rebreather mask? It's a little surprising that the doctor didn't specify that on his prescription. Or maybe you feel pretty confident that your O2ptimask is going to arrive very soon. Anyway, again -- congratulations for standing up for yourself and getting what you need.