Sure they're not?: There are a variety of oxygen delivery methods and the one being used might be one you don't know. In any case - in a calm and respectful manner, you might be able to get answers from her providers. First ask if they are permitted to talk to you. Try to get your sister to allow it if not. Generally, your thought that it is a standard part of treatment is correct. Thanks, you're a caring sister.
Answered 10/11/2014
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