Abstract No. 710 Evaluation of the effect of prior imaging on procedure time for mesenteric angiograms performed for acute lower GI bleed at a single institution

Abstract

To evaluate the effect of prior imaging on procedure time for mesenteric angiograms performed for acute lower GI bleed at a single institution. This retrospective study reviewed 82 patients who underwent mesenteric angiograms performed for acute lower GI bleed in our institution between 2011 and 2016. 34 patents with positive mesenteric angiograms were divided into 4 groups based on prior imaging. ANOVA singe factor was performed to compare the mean procedure time between groups. A total of 34 patients had positive mesenteric angiograms (34/82). Of these, 7 had a prior positive CTA, 11 had prior positive RBC scan, 5 had either a negative prior CTA or RBC scan and 11 had no prior diagnostic imaging. The mean procedure times were 77.8 min for the positive CTA group, 108 min for positive RBC group, 91 min for the group with negative imaging and 112 min for that with no prior imaging. Though the group with the positive CTA had the shortest mean procedure time, the difference was not statistically significant compared to the other groups (p-value 0.1). Procedural times for mesenteric angiograms in patients with prior positive imaging was shown not to be significantly different from those with negative or no prior imaging.