NCT07060820

Association Between Radial Artery Access Point and Radial Artery Spasm

Association Between Radial Artery Access Point and Radial Artery Spasm During Transradial Procedures

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 380 (actual)
• Sponsor: Mersin Medicalpark Hastanesi · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This prospective clinical study aims to investigate whether the puncture site distance from the radial styloid process affects the incidence of radial artery spasm (RAS) during coronary angiography. Patients undergoing coronary angiography via radial access will be randomized into two groups based on the puncture site distance: 0-20 mm and \>21 mm from the styloid process. The procedure will be performed by experienced interventional cardiologists using standard techniques and medications. The primary goal is to determine if a specific puncture site reduces the incidence of RAS, which is a common complication during transradial procedures. The study will also record procedural details and monitor for other complications to identify the optimal puncture site for reducing RAS and improving patient comfort.

Detailed description

The transradial approach (TRA) is the standard vascular access route for diagnostic coronary angiography and percutaneous coronary interventions, in accordance with contemporary guidelines, due to lower bleeding risk, improved patient comfort, and facilitation of early mobilization compared with femoral access. Despite these advantages, radial artery spasm (RAS) remains a common and clinically relevant complication during transradial procedures, often associated with procedural difficulty, the need for access site crossover, and patient discomfort. RAS is characterised by sudden, transient contraction of the radial artery during sheath insertion or catheter manipulation, which may result in difficulty in catheter advancement, and, in rare cases, procedural failure or catheter entrapment. Several clinical and procedural factors have been identified as being associated with the development of RAS, including female sex, smaller arterial diameter, use of larger sheaths, inadequate sedation, and limited operator experience. Currently radial access is recommended near the styloid process but there is limited data on the effects of different puncture distances from the styloid process on the development of RAS. We examined the impact of different radial artery puncture distances from the styloid process, on the development of radial artery spasm and access-site-related complications.

Conditions

• Coronary Artery Disease
• Radial Artery Spasm

Interventions

Type	Name	Description
PROCEDURE	Radial Artery Puncture at 0-20 mm	Radial artery puncture performed 0-20 mm proximal to the radial styloid process during transradial coronary angiography to evaluate its impact on the incidence of radial artery spasm (RAS).
PROCEDURE	Radial Artery Puncture at >21 mm	Radial artery puncture performed at a distance greater than 21 mm proximal to the radial styloid process during transradial coronary angiography to evaluate its impact on the incidence of radial artery spasm (RAS).

Timeline

• Start date: 2025-07-03
• Primary completion: 2025-12-31
• Completion: 2026-01-15
• First posted: 2025-07-11
• Last updated: 2026-01-21

Locations

1 site across 1 country: Turkey (Türkiye)