Trauma and burn kits are disgustingly good. With the recent non-combat click delay removal (biggest buff to medics and comtechs there is), you can spam click both use kit and switch body part as quickly as you can without delay. I’ve seen CO’s spam that shit on themselves and are already good to go back in.
Inaprovaline is godtier imo, any crit marine you should stab with a revive mix. If you can prevent them from flatlining it saves you a great deal of time having to remove their armor and using a defib on them. As it can become very messy keeping track of their weapon and armor if xenos do push you.
NOTE: If I am remembering correctly oxygen damage adds up to the total health but does not count toward it (so if individual has -130% damage with 60% being o2 damage they are still revivable)
During the defib process you can spam kits on other hand to get the marine above the -100% threshold to get them up and going again. I even just inject revive mix > strip armor > use defib > scan body during the defib and use kits if needed to be as time efficient as possible.