Effect of the Distance Between the Radial Artery Puncture Site and the Styloid Process on Radial Artery Spasm in Transradial Coronary Interventions: A Randomized Study.
Catheter Cardiovasc IntervJul 16, 2026 (epub)
Vedat Aslan, Sefa Sural, Nurettin Yeral et al.
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In 30 seconds
This randomized controlled trial evaluated the impact of puncture site distance from the radial styloid process on radial artery spasm (RAS) in 380 patients undergoing transradial coronary interventions. The study found no significant difference in clinical RAS rates (14.7% vs 17.9%, p=0.488) between Near-Styloid and Far-Styloid groups, but Near-Styloid access improved puncture efficiency and reduced complications.
Key findings
- First-attempt puncture success was higher in the Near-Styloid group (74.2% vs. 58.4%, p=0.002).
- Median puncture time was shorter for Near-Styloid access (20 vs. 30 seconds, p<0.001).
- Radial artery occlusion occurred less frequently in the Near-Styloid group (1.6% vs. 6.8%, p=0.019).
- Access-site hematoma rates were lower in the Near-Styloid group (1.1% vs. 5.8%, p=0.020).
Why it matters
Understanding the optimal puncture site in transradial procedures can enhance procedural efficiency and minimize complications, which is crucial for improving patient outcomes in coronary interventions.