First I want to say that this is not a Medical Assistant bash, it just happens that a Medical Assistant was involved; it could have easily been a nurse.
When I went through the medical assisting program back in 2001, they were still teaching us to give IM injections in the Glut and to rub after an IM injection. By the time I got to nursing school they said never rub after an IM injection to prevent spreading a systemic reaction, and never inject into the glut to avoid the sciatic nerve.
(I mention that this is not an MA bash because I recently took over on a patient that had gotten an IM injection in the glut by a Nurse)
I recently got a Tetanus injection in the left deltoid. With injections it is better to give than receive...so I was not looking, therefore I can not say if the MA aspirated or not. However, what I know is that she rubbed after the injection and when she withdrew the needle I bled all the way down my arm, she commented "Oh I hit a capillary". That evening I woke up with numb and tinging arms and hands, over the course of the evening it spread head to toe on my entire left side and started to radiate slightly to my right. I had to take a five hour drive that morning; which turned out to be quite discomforting, my entire left side (and I do mean my ENTIRE left side) was numb, tingly, and painful like when you leave a tourniquet on too long. It also felt cold like when you have poor circulation, I could feel it in my hand and when I stuck both of my hands under my legs my left hand felt colder than the right. Finally this morning when I woke up the symptoms seem to be residing. I hope.
My point of this post is to keep up your education, never assume that practice never changes. I can not say for sure if this MA aspirated or not, but I would venture to guess that she did not since she hit a capillary and continued to inject. On top of being injected into a capillary, the injection was rubbed in; totally systemic injection of Tetanus Toxoid. Having your entire left side go numb and then become painful like some one is cutting your circulation off is not fun and is very scary. Had the MA been using proper technique she would have not rubbed in my injection and possibly I would have avoided these last two days of annoyance, pain, and worry.