معنى بفشل

I wonder if that's significant. It means the antibiotics didn't cause the kidney failure.

I don't think it complicates things. The kidney failure was caused by the antibiotics.

Renal failure could cause the rash, fever, and muscle pain.

Which means the antibiotics are causing the kidney failure.

So, we take our best guess then. Which drug's causing the kidney failure?

If we leave them on both the antibiotics, they'll die of kidney failure.