Operator radiation dose during PCI: left distal radial access vs right conventional radial access
Official title: Comparison of Operator Radiation Exposure During Percutaneous Coronary Intervention Between Left Distal and Right Conventional Radial Access: A Multicenter, Randomized Trial
Run by Yonsei University · NCT07579169 · Data updated 2026-11-12
This study tests whether using the left distal radial approach during PCI leads to different radiation exposure for the operator compared with the standard right radial approach in adult patients.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 20 Years and up |
| Sex | All |
| Enrollment | 748 (estimated) |
| Sponsor | Yonsei University Academic / other |
| Drugs / interventions | radiation |
| Locations | 4 sites (Osaka and 3 other locations) |
| Status | Recruiting |
| Started | June 18, 2026 |
| Main results expected | April 21, 2029 |
| Study ends | April 21, 2029 |
| Registry record updated | July 8, 2026 |
| Trial ID | NCT07579169 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 19 or older scheduled for PCI with palpable left distal and right radial arteries and who consent to participate.
✕Probably not a fit
Patients without reductions in operator radiation exposure or with unsuitable arterial access may not experience a benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This interventional trial compares radiation exposure to the operator when performing percutaneous coronary intervention via left distal radial access versus right transradial access. Eligible adults undergoing PCI will be assigned to one of the two radial access methods to measure occupational radiation dose. The study is conducted at multiple centers, including Yonsei University-affiliated hospitals and international partner sites. Participants include patients aged 19 and older who require PCI, with specific arterial palpability and consent requirements to minimize confounding factors. The goal is to determine if the choice of radial access influences operator radiation exposure during PCI procedures.
Why it matters
Potential benefit: If LDRA reduces operator radiation, it could improve safety for interventional cardiologists performing PCI.
How similar studies have gone: Previous studies in PCI access methods have explored radiation exposure patterns, but direct head-to-head comparisons of LDRA versus RTRA are limited, making this investigation relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Patients aged 19 years or older 2. Patients scheduled for PCI Exclusion Criteria: 1. Non-palpable left distal radial artery pulse 2. Non-palpable right radial artery pulse 3. Presence of arteriovenous fistula 4. Need for femoral access as determined by the investigator 5. Refusal to provide informed consent 6. Pregnant or breastfeeding women
Where it's running
-
Yongin Severance Hospital, Yonsei University
Yongin-si, Gyeonggi-do, South Korea Recruiting -
National Cerebral and Cardiovascular Center, Osaka, Japan
Osaka, Japan Not yet recruiting -
Kyungpook National University College Hospital
Daegu, Gyeongsangnam-do, South Korea Not yet recruiting -
Jeonbuk National University Hospital
Jeonju, Jeollabuk-do, South Korea Not yet recruiting
Study contacts
- Principal investigator: Yongcheol Kim, MD, PhD — Severance Hospital
- Study coordinator: Yongcheol Kim, MD, PhD
- Email: yongcheol@yuhs.ac
- Phone: +823151898967
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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.