Abstract 15212: Reduction in Radiation Exposure Rate During Transradial Catheterization and Intervention Using a Simple Lead Drape
Background: Transradial access for cardiac catheterization and intervention reduces vascular access complications and improves outcomes in certain patient groups, but concerns persist over operator radiation exposure. We tested the hypothesis that a simple lead drape would reduce operator exposure in transradial catheterization or PCI.
Methods: Patients undergoing procedures from the left or right radial artery were randomly assigned to the use of a lead apron placed across the patient's abdomen and upper thighs. Operator exposure in cases with this enhanced shielding was compared to cases performed with standard shielding (Left shielded-LSvs.left unshielded-LUS, right shielded-RSvs.right unshielded-RUS). The physicians' exposure (ROE) was measured with single-use Microstar® dosimeters taped to the primary and secondary operators' left wrist and outside the thyroid guard for each case. Measured exposure was corrected for interprocedure variations in energy delivery by reporting dose as a function of the Air Kerma for each case, (Microstar® dose (cGy)/ Air Kerma (cGy) X 105).
Results: The groups were well matched on baseline clinical variables (LS n=28vs.LUS n=27 and RS n=37vs.RUS n=36). The right approach was favored in male patients (87% ) and the left approach in female patients (51%). Flouro. times were not different for LS vs.LUS (10.8±10.7vs.12.9±11.1min,P=0.48) or RS vs.RUS (8.6±8.1vs.8.4±7.4min,P=0.91). Air Kerma was similar for L Svs.LUS (138.4±124vs.187.4±170.9cGy,P=0.23) and RS vs.RUS (164.4±118.1vs.139.5±133.9cGy,P=0.40) but ROE was reduced by 51% for RS vs.RUS at the primary operator's wrist(Figure). ROE reduction with the left radial approach suggested an impact, but did not reach significance with the numbers studied (LS vs.LUS; 9.4±9.5vs12.1±11.1.X105, P=0.33).Conslusions: The use of a simple lead drape reduces in half the rate of radiation exposure to the primary operator's wrist during right radial catheterization or PCI
- © 2011 by American Heart Association, Inc.