Personally, I just give wounded(damage = armor) minifigs a trans dark red piece to denote that they're wounded. Wounded minifigs can only use hand or short range weapons, armor and skill get -1 and movement gets -2. If a wounded trooper is wounded again, he dies.
For medics, I use a skill roll, dead are use 4 and wounded have a use of 3. Some minifigs are too dead to heal(if the body got deformed(like getting gooshed by a tank, bullseyed by a missile, or just getting hit by a really high damage roll)) but the decision of when a minifig is beyond all hope should be decided by the players and is usually ad-libbed. No recording is needed, if you remember someone was very dead, then it was important, otherwise who cares.