I know basically nothing about this area so take all this with a large grain of salt (or rice), but my understanding is they can go through the femoral or brach

I know basically nothing about this area so take all this with a large grain of salt (or rice), but my understanding is they can go through the femoral or brachial vein to inject things directly into the heart. https://en.wikipedia.org/wiki/Peripherally_inserted_central_catheter https://en.wikipedia.org/wiki/Peripherally_inserted_central_...