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Feasibility and Safety of the Routine Distal Transradial Approach

distAl vs. coNventional Transradial Access for coRonary procEdures Study (ANTARES)

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05982366
Acronym
ANTARES
Enrollment
400
Registered
2023-08-08
Start date
2022-11-01
Completion date
2023-05-31
Last updated
2023-08-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Coronary Angiography, Coronary Artery Disease, Puncture, Radial Artery, Vascular Access Complication

Keywords

radial artery, distal transradial approach, access complication, anatomical snuffbox

Brief summary

The distal transradial approach (dTRA) via the anatomical snuffbox is hypothesized to be more beneficial than the conventional transradial access (cTRA) in patients undergoing coronary procedures. This prospective single-center randomized trial was designed to investigate the safety, efficacy, and various ultrasound parameters of dTRA.

Detailed description

Transradial approach (TRA) has emerged in most countries as a default strategy in urgent and elective coronary procedures. The advantages of TRA compared to the transfemoral access encompass a reduction of mortality, complications, and cost as well as improvement of patient's comfort. The aim of the present study (ANTARES, distAl vs coNventional Transradial Access for coRonary procEdures Study) was to assess the feasibility, safety and various ultrasound parameters of dTRA in the anatomical snuffbox as the first-line strategy, in comparison with cTRA, in patients undergoing coronary angiography (CAG) and percutaneous coronary intervention (PCI). The study is a non-inferiority, randomized controlled trial. There are two arms: distal transradial access and conventional transradial approach. 400 patients were enrolled.

Interventions

OTHERdistal radial artery acess side

coronary procedure (coronary angiography and/or coronary angioplasty) by the distal radial artery in the anatomical snuffbox area

OTHERconventional radial artery acess side

coronary procedure (coronary angiography and/or coronary angioplasty) by the forearm radial artery in the anatomical snuffbox area

Sponsors

Łukasz Koziński
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Intervention model description

Prospective, single-center, randomized trial

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* patients referred for CAG and/or PCI

Exclusion criteria

* ST-elevation myocardial infarction * sudden cardiac arrest * hemody-namic instability * chronic kidney disease (stages 4-5) * forearm artery occlusion * previous unsuccessful ipsilateral TRA * unfavorable RA diameter * ultrasound unavailability

Design outcomes

Primary

MeasureTime frameDescription
The primary composite endpoint consisted of rate of access crossover, rate of major adverse cardiovascular events (MACE) and rate of access-related vascular complications.up to 24 hoursAccess crossover from unsuccessful random arterial access (if the initial access point fails) to another one. Access-related complications after the procedure measured with Doppler Ultrasound (included radial artery occlusion, significant hematoma (EASY classification grade III-V), arteriovenous fistula, pseudoaneurysm, perforation and spasm). MACE definied as myocardial infarction, stroke, urgent revascularization, all-cause death.

Secondary

MeasureTime frameDescription
safety endpoint: patients' discomfort evaluated during access performanceduring the procedurephysical discomfort at the time of vascular access performance was assessed using a numerical scale (0/1/2/3 - respectively no/mild/moderate/severe discomfort)
efficacy endpoint: rate of access crossoverduring the procedure indexAccess crossover from unsuccessful random arterial access (if the initial access point fails) to another one.
efficacy endpoint: duration of access performanceduring the procedure index(measured from the time of skin puncture with local anesthetic to the successful sheath insertion confirmed by an outflow of arterial blood)
safety endpoint: access-site vascular complicationsafter 24 hours post procedureit is composed by the rate of radial artery occlusion, significant hematoma (EASY classification grade III-V), arteriovenous fistula, pseudoaneurysm, perforation and spasm; measured with Doppler Ultrasound

Other

MeasureTime frameDescription
radial artery velocitybefore the procedure, 24 hours and 60 days after the procedureparameter measured by Doppler Ultrasound at the access point
radial artery sizebefore the procedure, 24 hours and 60 days after the procedureparameter measured by Doppler Ultrasound at the access point
Access-timeduring procedurecounted from local anesthesia to successful insertion of the sheath

Countries

Poland

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026