I don't disagree with your reasoning behind packing chest injury stuff, and I certainly do not mean to insult any one or imply that I am some kind of official authority, I was just trying to speak from some experience.
My opinion is that if someone who knows how to use that equipment is present, then they will likely know how to make due with what they have at hand. There are loads of items that can be made into an occlusive dressing. All we used was a piece of 4X4 petroleum gauze.
Or they can figure out a way to decompress a chest. But if a person is not trained on how to vent a chest dressing or if and when you should, you can cause just as much harm. I just feel that having basic stuff that a person knows how to use is more beneficial than them trying to remember if they saw that particular procedure on their favorite drama.
I would recommend that any one who goes into the back country take some survival classes and first aid classes, it could save your or a family members life.
Your meds with the exception of antibiotics are what I recommend as well.
especially if you take meds on a regular basis. Be sure to update the meds regularly and keep them safe, consult with a pharmacist on how to safely store your meds and on how often you should change out your emergency stash with fresh meds. I would even imagine that if they are non narcotic and you have a good relation ship with your pharmacist and doc they will likely help you with this as far as reminders and selling you extra.
After thinking about it I would also include a Topo map of the area as well as a good compass, the basic square one is best, and a quality one will also include instruction which for some could be handy. A two way radio and GPS. My personal favorite is the Garmin Rhino because it is a radio and GPS all in one. Often times your local SAR folks will have similar radios that have overlapping frequencies.
As far as clothing goes I would change out clothing with the seasons and remember that you are still dealing with the elements, so having weather resistant clothing is still important. I would not pack extra cotton clothing.
As far as food goes I carry Kipper snacks or sardines because I am not likely to open those after I eat the PB and J and realize that I am still hungry. Aside from a good source of sodium and protein, they can usually be found packed is water.
Hope that helps.
* (Swinging club) Whack! whack! whack! *
Nope, the old nag's still dead .