A Salter cannula is very soft and comfortable. And micro cannulas are used for patients with very small noses. The use of an oxygen mask is often considered a viable option, sometimes patients consider a oxygen mask less intrusive or irritating but the use of an oxygen mask needs to be understood.
1 Chao, a Spanish language parting phrase for bye or goodbye. 2  Chao, Ähao, cÃ¢o, jao lord. 3  as used in Thai royal and noble titles. 4  in Chao Phraya River. 5  as equivalent to Tusi, chieftain.  not to be confused with Vietnamese Chau Tai.
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