Intravenous Pyelogram - Contraindications

Contraindications

Historically, the drug metformin has been required to stop 48 hours pre and post procedure, as it known to cause a reaction with the contrast agent. However the newest guidelines published by the Royal College of Radiologists suggests this is not as important for patients having <100mls of contrast, who have a normal renal function. If renal impairment is found before administration of the contrast, metformin should be stopped 48 hours before and after the procedure.