1.  what is t-pa? a hormone causing blood clots in the brain a medicine used to bust a clot a variation of cpr used for a stroke victim a respiratory treatment to a person with a stroke increase oxygen content in the blood2.  what is the mode of action for an ischemic stroke? a blood clot blocks blood flow to part of the brain a blood vessel bursts in the brain damaging the surrounding tissue a person stops breathing and this makes them feel light-headed none of the above