Prospective comparative cohort study of premium versus economy cabin travel and popliteal vein diameter after Long-Haul flight after an aesthetic surgery
NCT ID NCT07810179
First seen Sep 09, 2026 · Last updated Sep 09, 2026
Summary
This prospective cohort study will compare popliteal vein diameter changes in international travelers who independently fly to Bogota in premium business/first class or economy class. Standardized bilateral ultrasound will be performed before flight, within 2 hours after arrival, and at 24 and 48 hours. The primary outcome is the adjusted between-group difference in change from preflight diameter to arrival. Travel behavior and venous-risk confounders will be measured prospectively.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2024
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Adult international medical travelers with prebooked premium business/first-class or economy-class itineraries of at least 4 hours.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Age 18 to 65 years. * Commercial flight to Bogota with at least 4 hours of total airborne time. * Prebooked premium business/first-class or economy-class seat documented before enrollment. * Standardized preflight ultrasound within 24 hours before departure. * Arrival, 24-hour, and 48-hour ultrasound completed before surgery. * Written informed consent. Exclusion Criteria: * Current or prior unprovoked deep venous thrombosis requiring therapeutic anticoagulation. * Therapeutic anticoagulation during the study window. * Current pregnancy. * Lower-extremity condition preventing standardized bilateral popliteal ultrasound. * Surgery, prolonged immobilization, or major intravenous fluid administration before completion of the 48-hour scan. * Use of cabin upgrade after baseline or inability to verify the actual cabin flown.
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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
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
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Contacts and locations
Locations
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Clinica INO
RECRUITINGBogotá, Colombia
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Prospective stratified randomized Four-Group study of cabin class and graduated compression stockings on popliteal vein dilation after Long-Haul air travel after aesthetic surgery
- Randomized Assessor-Masked trial of moderate graduated compression stockings for popliteal vein dilation during Long-Haul Economy-Class air travel after aesthetic surgery
- Long flights may swell leg veins for days, study asks