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Understanding the Great Saphenous Vein for IV Access

This study is looking at the anatomy of the great saphenous vein (GSV), a large vein in your inner thigh, to see if it can be a reliable place to put an IV when other veins are hard to find. Researchers will use an ultrasound to look at the GSV in people of all ages who are in the emergency department or are employees there. The main goal is to see if the GSV can be clearly seen using ultrasound, with results measured over 12 months. This study is currently unclear about its recruitment status.

Study design
This is an interventional study planning to enroll 190 participants. It involves using ultrasound to examine the great saphenous vein.
What's involved
Not specified in the trial record.
Compensation
Not stated in the trial record.
Follow-up
The primary endpoint, successful visualization of the GSV, is measured at 12 months.

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NCT04922606

Great Saphenous Vein Anatomy at the Proximal Medial Thigh as a Potential Site for Rescue Venous Access

Enrolling by Invitation
NAAll AgesInterventionalDiagnostic
Mayo Clinic
~190 participants
Updated 2026-07-20 on ClinicalTrials.gov
What's tested:US ot the GSV

At a glance

Recruiting sites
0 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Successful visualization of GSV
Measured over 12 months

Conditions

Anatomy of the GSV for Rescue Peripheral IV Access

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Great Saphenous Vein Anatomy

Where it's being run

1 sites across 1 states
Minnesota1

Study leadership

  • Tobias Kummer, MD · PRINCIPAL_INVESTIGATOR · Mayo Clinic

Who to contact

This trial hasn't published a contact. View it on ClinicalTrials.gov

Do you actually qualify for this trial?

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Eligibility criteria

Exclusion

Critically ill patients as determined by the Emergency Medicine consultant of record for the patient.
Legs not accessible due to dressing, wounds, or other factors.
Overlying cellulitis/soft tissue infection or injury.
Patients that are prison inmates and patients/patient's surrogates who are unable to give verbal consent/assent.

What this trial measures

  • Successful visualization of GSV12 months

    Number of times the great saphenous vein is identified at the level of the medial distal thigh in the general population using ultrasound