Intravenous Contrast Computed Tomography Versus Native Computed Tomography in Patients With Acute Abdomen and Impaired Renal Function

Exclusion Criteria

• •Age less than 18 years
• •Pregnancy
• •eGFR less than 15 or more than 45 ml/min/1.73 m2
• •Renal replacement therapy within 30 days prior enrolment
• •CT with IV contrast less than 72 hours prior enrolment
• •Suspicion of vascular occlusion, dissection or bleeding (i.e. need for IV-contrast)
• •CT needed without IV-contrast to detect or rule out ureteral stone
• •IV contrast allergy
• •Inability to give written consent.