Related Experiment Video
Updated: Oct 4, 2025
Transradial Access Chemoembolization for Hepatocellular Carcinoma Patients
Published on: September 20, 2020
[Radial artery occlusion after a radial access procedure: pilot study comparing eco Doppler and Inverse Barbeau Test
. Radial artery occlusion after a radial access procedure: pilot study comparing eco Doppler and Inverse Barbeau Test assessments.
. 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.
Related Concept Videos
01:11Assessment of radial pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
01:25Assessment of apical radial pulse
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
01:19Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
01:21Sites for measruring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
01:23Assessment of blood pressure in brachial artery(two-step method)