Good advice. I'm pretty confident that the military is leading the way in trauma self aid and buddy aid. I suggest you get basic IFAKs and some TCCC classes to learn how to use them. Even one afternoon doing some lectures and a few scenarios could potentially save a life. You basically want one or two tourniquets, a couple packages of hemostatic agent (Combat Gauze is my fovorite), an even number of occlusive chest dressings (I keep 4-6), a few 3-1/2" 14 ga needles for needle decompression, an NPA, and some bulk wound packing materials ( I keep an israeli dressing and a kerlix roll with an ACE wrap). We also carry a 500mL bag of IV fluid and an IV kit but that may not be available in a civilain setting. In the civilian settng you may want to keep a pocket mask handy. Trauma shears are also good to have.
I teach my guys to follow the acronym MARCH
M - massive hemmorhage (put a tourniquet on any limbs with arterial bleeds, stop other arterial bleeds with direct pressure and hemostatic agents. pocket type wounds for instance groin shots get packes with the kerlix and ACE bandage)
A - Airway (make sure the patient has an airway. Unless you're trainied and authorized to intubate or cric you're pretty much relying on an NPA, the recovery postion, or a heimlich maneuver in rare cases)
R - Respirations. (occlude any penetrating ches trauma and perform needle decompression on the affected side. if the patient is inconscious and not breathing at a rate of 12-20 bpm bag them up or down to within that range. Give O2 if available
C - Circulation (Stop veinous bleeds and abrasions, start IV and fluid challenge)
H - Hypothermia/ head injury ( most trauma patients are heading toward hypothia if they've lost much blood. Put a blanket on them. Start monitoring level of consciousness for possible head injury.)
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