DR ABC
It sounds like you actually followed this rule, (and maybe saved this persons life
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It's quite easy to differntiate between what's life threatening, an what is not, if you've seen it many times before, but if in doubt, get'em seen as soon as poss
'speically if your worried about someones
breathing.
(2000 people a year (in the UK) die of uncontrolled asthma)