Injections to the heart?

why dont people die when they get injections to the heart? for example, adrenaline shots? why don't their hearts bleed and stuff?

Injections to the heart?
Please don't believe everything you see in the movies. "Pulp Fiction" was not a documentary. ;-)





In reality, it is dangerous to give an injection directly into heart muscle--not because of bleeding so much as from the danger of disrupting the electrical rhythm of the heart. It is sometimes done in cases of cardiac arrest, but it shouldn't be done by anyone who isn't medically trained and who knows exactly what they're doing. Anyway, if you're in cardiac arrest, you're pretty close to being dead anyway, so at that point the potential benefit may outweigh the risks.





There will be some bleeding, but that wouldn't be a major issue because it will clot. Another danger is that of introducing bacteria or foreign matter into the heart from the skin, which could lead to infection down the line.
Reply:The needle hole is not big enough to cause dangerous bleeding. Just like when you get an injection in your arm, you don't bleed to death.
Reply:The heart's just a muscle, so there's not a lot of bleeding. The reasons intracardiac epinephrine hasn't been used in the past couple of decades are (1) it doesn't work any better than intravenous injection and (2) it was quite unusual, but there would be an occasional laceration of a coronary artery. It seems, though, that some writers haven't caught on to the fact that it is no longer done.