11/28   Historical CPR guidelines:
        1995: 15 presses and 5 breaths
        2000: 15 presses and 2 breaths
        2005: 30 presses and 2 breaths
        \_ Slightly interesting, but did you have a point?
           \_ People having grown a larger lung capacity with weaker hearts?
        \_ It also varies between training agencies.  The class I took about
           a month ago suggested 15 presses and two breaths per cycle.  The
           change I found most noticeable from the last time I took a CPR
           class (1993) was that they taught us to position our hands between
           the victims nipples instead of coming up slightly from the tip of
           the breastbone.  The recommendations change over time as they
           find different things working or failing in the field.  The basic
           idea of "get some air into the victim and squish it around"
           remains unchanged.
           \_ Bio nitpick: CPR is about getting some air in the lungs and then
              putting pressure on the chest so the blood moves.
              \_ how was pp's version wrong?
                 \_ "squish it around", i guess it depends on the meaning
                    of "it"
                    \_ Well, technically, I'm "squishing it around some"
                       on myself as I type.  While semantically accurate, it
                       doesn't concisely explain what's actually happening.
                       He did make his point though, so this really is a
                       nitpick.
                    \_ "it" == "oxygenated blood".  The reason you're trying to
                       move blood during CPR is to deliver oxygen.
           \_ the joke in EMS is that the primary purpose of CPR is to
              treat the anxiety of the person treating the patient.