I'm all for more medicine, its extended my life now by about 40 years since the first time I almost died and was brought back by a team of doctors, and almost ten years since the second event that almost killed me. If my medical team says its good for me, I'm happy to follow their advice. And having been through such events you meet many others that have survived the same, and would have died had they not had both surgical and medicinal intervention, some of it considered 'experimental'. I mean I'm quite happy for others to make their own decision as well, the planet is getting overpopulated, so some do need to die, and better for them to volunteer for it. Out of the hundreds I know personally that survived life threatening events using modern medicine I only know one that died during the process due to mal-practice. I actually know a few that have died from completely preventable diseases because they didn't follow widely available advice, and some of those quite horribly.
So in short, why would I not trust my doctors, they haven't failed me yet. You will have some big decisions to make if you suffer a heart attack, as automatically you might be part of a trial without knowing it, they test new drugs and other treatments to try to improve survival rates all the time. The older drugs they use are known to cause some damage to heart tissue while stabilizing you, the newer ones are supposed to be better in that regard. Or you can refuse treatment and see if the heart attack just 'goes away', I mean you could does up some aspirin or other herbal blood thinner to delay the heart attack to a later time, maybe, if the blockage is not too gunked up and heart tissue not too damaged.
BTW we have reactions to stuff all the time. I did not die from the Moderna shot, but its clear it did not agree with my physiology, so I wont be taking that again. I've gone through this with other medicines, you try a course, if it doesn't agree with you, try another, some things will try to kill people with certain differences, so that's always a risk, but its much less risk than a child trying a peanut for the first time....