Diagnostic Criteria for Contrast Nephropathy
What are the criteria for diagnosing contrast nephropathy?
Although there is no universally accepted definition, an increase in serum creatinine level of 0.5 to 1.0 mg/dL or 25% to 50% from baseline is used after iodinated contrast administration.
There is debate as to whether or not IV iodinated contrast induces nephropathy.
The original studies showing harm were in patients receiving intra-arterial contrast for cardiac angiography.
Recent studies have repeatedly failed to find contrast to be a risk factor for acute kidney injury.