Hi. My Aunt 70, Suffered From A Heart Attack Yesterday.

Hi. My aunt 70, suffered from a heart attack yesterday. Fortunately I managed to bring her to the hospital in time and within no time she was in a cayh lab for angioplasty. One of her artery wasa completely blocked. Since today morning her blood pressure is dropping and she is on medicine support Injections? Can u plz tell me that what are chances of survival?