We all know there is oxygen in air because we breathe it to live. However, the air around us is mostly nitrogen — about 78 percent. Nitrogen is fairly non-reactive and not poisonous. Also, it has no ...
Smith, S.M.S. et al (2009) Emergency oxygen delivery 2: patients with asthma and COPD. Nursing Times; 105: 11. This is the second of a two-part unit on the use of emergency oxygen in adults. Part 1 ...
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