ATLS "new" standards (1997)
                        ===========================

þ Official ATLS Tachycardia
 infant  > 160
 toddler > 140
 child   > 120
 adult   > 100

þ Official ATLS Types of Hemorrhage
  (based on 5L total blood volume):
===============================================================================
 Class
    How much blood loss
       Physiology
          Response to Fluid
             What to do
===============================================================================
Class I
   "10% + a bit" (<15%) = <750 cc
      min. tachycardia only
         No need for fluid
            Do nothing
Class II
   "20% + a bit" (15-30%)=~1500 cc
      +tachypnea/low pulse pressure
         Rapid response to fluid