I start off aspirating by pulling the plunger back and no blood comes up at all.
I inject 2 mL extremely slowly over the course of 4-5 minutes, and no blood comes up in the middle of the injection when I stop pushing down the plunger to let the gear get absorbed.
However, multiple times now, at the end of the injection when I wait around 10 seconds for the gear to get absorbed at the end of the injection, blood starts coming up the syringe, and I can see some blood at the tip of the needle (mixed with the gear that can't be squeezed out at the needle tip).
After slowly pulling out, there's a significant amount of bleeding.
Anyone have any idea what's going on here? If it was just nicking a vein, I don't think blood would be coming up the needle while the needle is still inside. I aspirate by pulling back nearly half an inch, and absolutely no blood comes up at all, and the plunger falls back on its own. Just really confused here.
I inject 2 mL extremely slowly over the course of 4-5 minutes, and no blood comes up in the middle of the injection when I stop pushing down the plunger to let the gear get absorbed.
However, multiple times now, at the end of the injection when I wait around 10 seconds for the gear to get absorbed at the end of the injection, blood starts coming up the syringe, and I can see some blood at the tip of the needle (mixed with the gear that can't be squeezed out at the needle tip).
After slowly pulling out, there's a significant amount of bleeding.
Anyone have any idea what's going on here? If it was just nicking a vein, I don't think blood would be coming up the needle while the needle is still inside. I aspirate by pulling back nearly half an inch, and absolutely no blood comes up at all, and the plunger falls back on its own. Just really confused here.