Firstly,it has to be established that there are no underlying structural abnormalities and no other underlying disease conditions like decreased blood pressure, dehydration and heart problems that could have cause and aggravated your friend's condition.
If these have been ruled out, then one may be dealing with a kidney infection that could have been caused by an ascending infection from the urethra or bladder. This may be a case of pyelonephritis. This may present with fever , back pain and vomiting. This needs close evaluation and supervision as well as intensive round of intravenous antibiotics.
Is your friend out of the ICU?
At this point, if her kidney infection is not caused by any underlying structural abnormalities then completing her course of medications may suffice. She may need to have a follow up consultation with her physician once out of the hospital ,however at this point I do not see a need for prophylactic antibiotics given that her symptoms of fever and vomiting have resolved.
Hi thanks for advice, she went back into the ICU on friday with 104.0 temp that wouldn't come down and severe vomiting and abdominal pain and they discovered her kidneys are just loaded with kidney stones and she has a large one blocking her urinary tract.
They did surgery to put in stint's to drain off the infection and they will wait about 2 weeks to remove the stones. The doctor said her body is just producing A LOT of stones and she'll have to change her diet and take medication to help stop it.
Thank God they figured it out. Wish it had been sooner as to avoid all this pain and sickness.