With radial artery (RA) grafts still underutilized in ... narrowing or string sign), or O (occlusion) on coronary CT angiography. "In this trial, we observed an 18.6% rate of RA graft failure ...

Ultrasound 24 hours after angiography indicated an incidence of radial artery thrombosis of 1.1% in the control group and 4.3% in the protamine treatment group, with no statistically significant ...