MP40-12 THE EFFECT OF RACE AND SKIN COLOR ON NEAR-INFRARED SPECTROSCOPY READINGS IN PEDIATRIC PATIENTS WITH UNILATERAL ACUTE SCROTUM

Abstract

fluoroscopic settings were recorded. Dosimetry data was recorded after analysis of single point dosimeters. RESULTS: Seventy-one patients underwent 75 operative procedures including retrograde pyelogram, ureteral stent insertion ureteroscopy and percutaneous nephrolithotomy (PCNL) with dosimeter placement. Underlying diagnoses included nephrolithiasis, calyceal diverticulum, hematuria, hydronephrosis and ureteropelvic junction obstruction. Mean age was 10.8 years, and mean BMI was 21.4 (62nd percentile for age). Dosimetry data demonstrated overall cohort average dose of 210 mrad per procedure. When divided by procedure, patients received a mean dose of 2,887 mrad per PCNL, 315 mrad per ureteroscopy, 149 mrad per stent insertion and 160 mrad per retrograde pyelogram. Radiation dose was significantly higher in patients undergoing PCNL when compared with ureteroscopy, stent insertion and retrograde pyeologram. CONCLUSIONS: Pediatric radiation exposure during urologic procedures is not insignificant, approaching and exceeding the recommended limit of 500mrad/year for patients under 18 years of age. Further study characterizing pediatric urologic exposure across multiple institutions would provide context for our findings. Protocols to optimize fluoroscopic settings and minimize patient exposure continue to be refined, andshouldplayakey role inall pediatric radiationsafety initiatives.