Ultrasound study aims to uncover why a newer artery access method reduces blockage risk

NCT ID NCT07686003

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 06, 2026 · Last updated Jul 07, 2026 · Updated 1 time

Summary

This study uses ultrasound to measure blood flow in two different spots in the wrist and hand while a compression band is applied, simulating what happens after a heart procedure. The goal is to understand why accessing the artery at the hand (distal radial) leads to fewer blockages than the traditional wrist approach. Researchers will compare blood flow patterns in 220 adults scheduled for coronary angiography.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If the study confirms better blood flow preservation at the distal site, it could explain why distal radial access lowers the risk of artery blockage and support its wider use.
What could go wrong
This is an observational study measuring blood flow, not testing a treatment. The findings may not change clinical practice or apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 220 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Jul 2026

An estimate. Start dates often move.

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Adults (≥19 years) scheduled for coronary angiography for atypical chest pain, stable angina, or acute coronary syndrome, undergoing pre-procedural transthoracic echocardiography, with palpable proximal and distal radial arteries; excluding those with cardiogenic shock, prior distal radial coronary angiography before echocardiography, inability/refusal to consent, ipsilateral arteriovenous fistula, or pregnancy/breastfeeding.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: A. Adults aged ≥19 years B. Patients scheduled for coronary angiography due to atypical chest pain, stable angina, or acute coronary syndrome C. Patients undergoing transthoracic echocardiography for assessment of cardiac function prior to coronary angiography D. Palpable proximal and distal radial arteries Exclusion Criteria: A. Cardiogenic shock B. Patients who have undergone coronary angiography via distal radial access prior to echocardiographic evaluation C. Refusal or inability to provide informed consent D. Presence of an ipsilateral arteriovenous fistula E. Pregnant or breastfeeding women

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

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  3. A doctor treating you

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Contacts and locations

Locations

  • Wonju Severance Christian Hospital

    Wŏnju, Gangwon-do, 26426, South Korea