ArticleClinical research in cardiology : official journal of the German Cardiac Society2026
Optimal radial artery diameter for predicting radial artery occlusion after transradial coronary catheterization.
Article in Clinical research in cardiology : official journal of the German Cardiac Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveThe study aims to investigate how the radial artery diameter (RAD) predicts post-procedural radial artery occlusion (RAO) in patients undergoing transradial coronary catheterization (TRC).
backgroundRAO is the most frequent complication of TRC. However, the cut-off value of RAD for predicting RAO remains uncertain.
methodsA total of 2073 patients undergoing TRC were consecutively screened, and 1023 were enrolled. The participants were divided into 6 French (Fr) coronary angiography (CAG), 6 Fr percutaneous coronary intervention (PCI), and 7 Fr PCI groups. Ultrasound examination was performed before and after the procedure to measure RAD and to assess RAO. The primary endpoint was the rate of RAO at 12-24 h post-TRC.
resultsRAO was observed in 11.2% (115/1023) of patients. RAO was significantly lower in the 6 Fr PCI group than in the 6 Fr CAG and 7 Fr PCI groups (6.6% vs. 14.3%, P = 0.003, 6.6% vs. 15.4%, P = 0.001, respectively). The RAD cut-off values for predicting RAO were 2.42 mm in the 6 Fr CAG group, 2.38 mm in the 6 Fr PCI group, and 2.85 mm in the 7 Fr PCI group. The larger pre-procedural RAD was an independent protective factor for preventing RAO (odds ratio [OR]: 0.239, 95% confidence interval [CI]: 0.099-0.561, P < 0.001), while 7 Fr sheath (OR: 4.610, 95% CI: 2.159-9.938, P < 0.001) and local complaints at access site (OR: 4.782, 95% CI: 2.815-8.150, P < 0.001) were associated with an increased risk of RAO post-TRC.
conclusionPre-procedural ultrasound measurements of RAD can help to choose an optimal sheath size to prevent RAO after TRC.
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