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Which vein is best for hard-to-stick patients? new study aims to find out.

NCT ID NCT04265703

Knowledge-focused Sponsor: Hospital Civil de Guadalajara Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares three different sites (internal jugular, subclavian, and innominate veins) for placing a central line using ultrasound in critically ill patients whose neck veins collapse or are very small. The goal is to see which site has the lowest failure rate on the first try. 315 adults needing a central line and showing vein collapse will be randomly assigned to one of the three approaches.

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 successful, this study could identify the best vein site for placing central lines in patients with hard-to-find veins, making the procedure safer and more efficient.
What could go wrong
This is an early-stage comparative study, not testing a new drug or device. Results may not apply to all patients or settings, and the best site may still have risks like infection or failure.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 315 people

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

Started

Feb 2024

Expected to finish

Feb 2027

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.

Ages

18 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Patients who need central venous catheterization, and have respirophasic variation in cross-sectional area of jugular veins Exclusion Criteria: * Less than 18 years-old * Patients with previous failed attempts with non-ultrasound guided technique * Non-resolved pneumothorax/hemothorax at enrollment * Refusal to sign informed consent

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Conditions

The condition(s) this trial relates to.

Critical Illness

As listed by the trial registrant

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

Critical illness

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

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

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Hospital Civil Fray Antonio Alcalde

    RECRUITING

    Guadalajara, 44280, Mexico

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