Supplementary Material for: Comparison of Verapamil versus Heparin as Adjunctive Treatment for Transradial Coronary Procedures: The VERMUT Study Tebaldi M. Biscaglia S. Tumscitz C. Del Franco A. Gallo F. Spitaleri G. Fileti L. Serenelli M. Tonet E. Erriquez A. Campo G. Ferrari R. 10.6084/m9.figshare.6508796.v1 https://karger.figshare.com/articles/dataset/Supplementary_Material_for_Comparison_of_Verapamil_versus_Heparin_as_Adjunctive_Treatment_for_Transradial_Coronary_Procedures_The_VERMUT_Study/6508796 <b><i>Objective:</i></b> We sought to demonstrate that the combination of a local vasodilator (verapamil), modern materials, patent hemostasis, and intravenous anticoagulant only in the case of percutaneous coronary intervention, as compared to default heparin administration after sheath insertion, may optimize a combined endpoint, including radial artery oc­clusion (RAO), radial artery spasm (RAS), and access site complication. <b><i>Methods:</i></b> This is a prospective, single-center, double-blind randomized trial. Overall, 418 patients undergoing a transradial approach (TRA) for coronary procedures were randomized 1: 1 to receive intraradial verapamil (5 mg) or heparin (5,000 IU) after a 6-Fr sheath insertion. The primary outcome was the 24-h occurrence of RAO (ultrasound confirmation), access site complication, and RAS requiring the bailout administration of vasodilators. <b><i>Results:</i></b> The combined primary outcome occurred in 127 (30%) patients. It was significantly lower in patients randomized to verapamil as compared to others (26 vs. 35%, <i>p</i> = 0.03). This was mainly due to a significant reduction in RAS (3 vs. 10%, <i>p</i> = 0.006). The 24-h and 30-day occurrence of RAO did not differ between the study groups. <b><i>Conclusion:</i></b> Local administration of verapamil versus heparin reduces RAS, without increasing RAO, which appears to be strictly related to radial artery diameter and hemostasis time. 2018-06-13 12:27:46 Radial artery Spasm Occlusion