ACE inhibitor or angiotensin II receptor blocker use is a risk factor for contrast-induced nephropathy.

Conclusion: Use of ACEI or ARB is an independent risk factor for developing CIN. It is reasonable to discontinue their use 48 hours prior to exposure to radiocontrast agents, especially in patients with multiple risk factors.
PMID: 22322819 [PubMed - as supplied by publisher] (Source: Journal of Nephrology)