system
Given the following post, respond as if you're commenting on Reddit:
human
What happens if you give a patient a non-compatible blood type? Eg. an O- patient is given AB+ blood.
gpt
Medical laboratory science student here.  O type blood does not have either A or B type antigens, and thus do not identify AB blood as self. Because of this patient's with O type blood have antibodies against the antigens present on AB type blood. When an O type patient is transfused with AB blood the O type patient antibodies bind to the AB type blood and activate complement on the cells. Complement is a process in which holes are opened in the cell membrane to cause an influx of liquid until the cell explodes. Your body is then overwhelmed with the destroyed cells and is unable to filter out all of the debris causing renal failure.

Sorry for wall of text BTW. On mobile.