. Radial artery occlusion after a radial access procedure: pilot study comparing eco Doppler and Inverse Barbeau Test assessments.
Introduction: Radial artery occlusion (RAO) after a radial access procedure can compromise the distal flow and hamper any possible reuse of the radial artery. Ultrasound examination is the gold standard for identifying RAO, but requires special equipment and expertise. An indirect test to estimate radial flow is the Inverse Barbeau Test (IBT), which evaluates the radial oximetry waveform during ulnar artery compression.
Aim: To determine the incidence of RAO and to compare the results obtained with the ultrasound and IBT tests.
Methods: Between November 2017 and February 2018, 50 patients undergoing radial access angiography were enrolled. Radial flow was assessed using both ultrasound and IBT, at three times: before the procedure (T0), at 24 hours (T1) and at 30 days (T2).
Results: The incidence of RAO obtained by ultrasound was no cases at T0, 3 (6%) at T1 and 1 (2.4%) at T2. IBT identified 14 (28%), 33 (66%) and 10 (23.8%) cases respectively. Some cases with no occlusion with the ultrasounds, 14 (28%), 30 (60%) and 9 (21.4%) respectively, resulted occluded by IBT.
Conclusions: The incidence of RAO is comparable to that reported in the literature (<10%). The IBT correctly identifies the presence of flow, but overestimates radial occlusion.