A Prospective Study of Contrast Preservation Using Ultra-Low Contrast Delivery Technique Versus Standard Automated Contrast Injector System in Coronary Procedures

Abstract Objective We aimed to assess the decrease in contrast media volume (CMV) with ultra-low contrast delivery technique (ULCD) developed at our institution versus the usual automated contrast injector system (ACIS) contrast delivery in coronary procedures. Methods We analyzed the amount of contrast given in the consecutive 204 patients of the operators who use ULCD technique versus other operators consecutive 200 patients who use ACIS without ULCD technique for coronary angiograms and/or percutaneous coronary interventions (PCI) from May 2017 to July 2018 at our center. We calculated the mean CMV between these groups. Results We observed a significant reduction in mean CMV with ULCD technique versus standard ACIS, respectively: angiogram 24.8±15.8 mL (n=194) vs 42.3±25.1 mL (n=200) (p Conclusion Our study showed a highly significant reduction in CMV using ULCD technique compared to standard ACIS contrast delivery in coronary invasive procedures. Even in the standard ACIS arm, CMV was significantly lower than values reported in literature, possibly due to operators’ bias towards contrast preservation.