Short-axis vs long-axis ultrasound-guided radial artery cannulation
Official title: Comparison of Short-Axis and Long-Axis Approaches for Ultrasound-Guided Radial Artery Cannulation: The Effect of Radial Artery Depth on Technique Selection-A Randomized Controlled Trial
Run by Saglik Bilimleri Universitesi Gazi Yasargil Training and Research Hospital · NCT07801807 · Data updated 2026-11-12
This study tests whether a short-axis, out-of-plane ultrasound approach works as well as a long-axis, in-plane approach for placing a radial artery line in adults undergoing surgery.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 144 (estimated) |
| Sponsor | Saglik Bilimleri Universitesi Gazi Yasargil Training and Research Hospital Academic / other |
| Locations | 2 sites (Diyarbakır, Diyarbakır and 1 other locations) |
| Status | Recruiting |
| Started | August 25, 2026 |
| Main results expected | December 15, 2026 |
| Study ends | December 30, 2026 |
| Registry record updated | September 3, 2026 |
| Trial ID | NCT07801807 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults 18 years or older requiring radial artery cannulation for invasive monitoring during surgery or interventional procedures, with a visualizable radial artery on ultrasound and the ability to provide informed consent.
✕Probably not a fit
Patients with conditions such as severe peripheral arterial disease, radial artery occlusion, inadequate collateral circulation, or skin lesions at the cannulation site may not benefit from this comparison.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This randomized trial compares two ultrasound-guided techniques for radial artery cannulation in adults undergoing elective procedures. Participants are assigned to either short-axis/out-of-plane or long-axis/in-plane cannulation, with pre-procedure artery depth measured by ultrasound. Outcomes include first-attempt success, number of punctures and needle redirections, time to cannulation, failed attempts, and procedure-related complications. The study also explores whether the artery depth from the skin influences success and helps guide technique selection. No details on interventions beyond the two cannulation approaches are provided.
Why it matters
Potential benefit: If successful, the findings could help clinicians choose the most reliable ultrasound-guided technique for radial artery cannulation, potentially improving success rates and reducing complications.
How similar studies have gone: Prior work in ultrasound-guided cannulation has shown technique differences in success rates, but this study appears to further quantify depth-related effects and direct technique comparison in a randomized design.
Who can join: the full rules
Show full inclusion / exclusion criteria
nclusion Criteria: Age 18 years or older Patients with an indication for radial artery cannulation for invasive arterial monitoring Undergoing a surgical or interventional procedure Radial artery suitable for visualization by ultrasound Provision of written informed consent Exclusion Criteria: Age younger than 18 years Infection, burn, scar, or skin lesion at the planned cannulation site Previous vascular surgery involving the study extremity Advanced peripheral arterial disease or radial artery occlusion Inadequate collateral circulation as assessed by the Allen test or ultrasound Severe coagulopathy Presence of an arteriovenous fistula in the study extremity Severe hemodynamic instability Multiple previous failed radial artery cannulation attempts in the same extremity Pregnancy Allergy to ultrasound gel Refusal to participate in the study
Where it's running
-
Dicle University Faculty of Medicine
Diyarbakır, Diyarbakır, Turkey (Türkiye) Recruiting -
Gazi Yasargil Training and Research Hospital
Diyarbakır, Turkey (Türkiye) Recruiting
Study contacts
- Principal investigator: Fikret Salik, MD — Dicle University Faculty of Medicine
- Study coordinator: Fikret Salik, MD
- Email: fikretsalik@gmail.com
- Phone: +90 507 621 4125
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.