the only answer i can com up with is go and see a doctor asap, cos he may have ruptured the walls of his kidneys which can lead to a pus infection which in turn can turn into Acute Nephritis (Acute Glomerulonephritis).
Acute Nephritis can be cured completely, or can develop into a chronic disease which can lasts over years before a fatal termination. It is possibly that death may even come in a few days.
i accept the fact that i may be completely wrong as i am not a train medical professional, but i urge you, SEE A DOCTOR just in case...
hope everythign goes well
<(^__^)>