I'm not a teacher.
Very good! And, I just wanted to say I admire not just your but the medical field as a whole for their contributions to human-kind.
Back on topic.
I leaned up against the wall, consciously breathing deeply in through themy nose and out through themy mouth but it seemed to make things worse. Finally, I looked away. Dialysis is not for the weak. Watching a Slurpee straw size needle "suck" an entire body of blood out of another human is jolting, but I was hooked.
You should re-write what is in red because it does not follow the tone set for the rest of your essay.
While the reaction of countless other witnesses was shockWhile Witnesses were in a state of shock I instinctively dropped my belongings and ran to the victim...
Just a suggestion, short and sweet.
...the EMTs arrived only to find out that a close friend was behind the wheel of the car that broke her pelvis and both femurs. Al though I was already on the path, this monumental event in my life marked the solidification of my desire to be in health care.
In the bolded you leave an answered, or open, question about who the "close friend" is. You do not address who the friend belongs to. If, it is your friend then say, "...to find out that my close friend.." or, "..to find out that her close friend.."
I am eager to affordprovide my contribution to society as a quality, Physician Assistant.
Hope this helped, good luck.