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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

7. September 2026 aktualisiert von: Research Inc
This four-group prospective study will enroll travelers who have independently booked economy or premium business/first-class flights to Bogota. Within each cabin stratum, participants will be randomized to moderate graduated compression stockings or no stockings. Bilateral popliteal vein ultrasound will be performed before flight, within 2 hours after arrival, and at 24 and 48 hours. The primary outcome is the interaction between cabin class and compression assignment for change in mean bilateral popliteal vein diameter.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Participants will enter the study according to their prebooked cabin class and then be randomized within that stratum to wear properly fitted knee-high graduated compression stockings or no compression during the flight. The design creates four groups. Standardized bilateral ultrasound will quantify venous diameter and cross-sectional area before departure and through 48 hours after arrival, before surgery. Mixed-effects models will estimate the randomized stocking effect, the adjusted cabin-class association, and their interaction. The protocol will record seat characteristics, ambulation, hydration, adherence, symptoms, and safety events.

Studientyp

Interventionell

Einschreibung (Geschätzt)

200

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Age 18 to 65 years.
  • Commercial itinerary to Bogota with at least 4 hours of total airborne time.
  • Prebooked premium business/first-class or economy-class cabin documented before randomization.
  • No medical requirement for or contraindication to graduated compression stockings.
  • Ability to complete standardized ultrasound before flight and through 48 hours after arrival before surgery.
  • Written informed consent.

Exclusion Criteria:

  • Current deep venous thrombosis, therapeutic anticoagulation, or severe peripheral arterial disease.
  • Pregnancy.
  • Lower-extremity skin, neurologic, or anatomic condition preventing safe stocking use or ultrasound.
  • Cabin upgrade or downgrade after randomization that changes the prespecified stratum.
  • Surgery or major intravenous fluid therapy before the 48-hour examination.
  • Inability to follow the randomized stocking assignment.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Verhütung
  • Zuteilung: Nicht randomisiert
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Single

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Economy Cabin Plus Compression
Participants with a prebooked economy itinerary randomized to knee-high moderate graduated compression stockings.
PROPOSED pressure class: 20-30 mmHg at the ankle, properly fitted and worn from approximately 1 hour before boarding through the arrival ultrasound. Product and pressure class require confirmation. Linked arm/group(s): Economy Cabin Plus Compression, Premium Cabin Plus Compression.
Prebooked and completed economy-cabin travel; seat characteristics and behavior are measured but not assigned. Linked arm/group(s): Economy Cabin Plus Compression, Economy Cabin Without Compression.
Triplicate bilateral diameter and cross-sectional-area measurements before flight and at arrival, 24 hours, and 48 hours by an assessor masked to stocking allocation. Linked arm/group(s): Economy Cabin Plus Compression, Economy Cabin Without Compression, Premium Cabin Plus Compression, Premium Cabin Without Compression.
Aktiver Komparator: Economy Cabin Without Compression
Participants with a prebooked economy itinerary randomized to no compression stockings.
Prebooked and completed economy-cabin travel; seat characteristics and behavior are measured but not assigned. Linked arm/group(s): Economy Cabin Plus Compression, Economy Cabin Without Compression.
Triplicate bilateral diameter and cross-sectional-area measurements before flight and at arrival, 24 hours, and 48 hours by an assessor masked to stocking allocation. Linked arm/group(s): Economy Cabin Plus Compression, Economy Cabin Without Compression, Premium Cabin Plus Compression, Premium Cabin Without Compression.
Experimental: Premium Cabin Plus Compression
Participants with a prebooked business/first-class itinerary randomized to knee-high moderate graduated compression stockings.
PROPOSED pressure class: 20-30 mmHg at the ankle, properly fitted and worn from approximately 1 hour before boarding through the arrival ultrasound. Product and pressure class require confirmation. Linked arm/group(s): Economy Cabin Plus Compression, Premium Cabin Plus Compression.
Triplicate bilateral diameter and cross-sectional-area measurements before flight and at arrival, 24 hours, and 48 hours by an assessor masked to stocking allocation. Linked arm/group(s): Economy Cabin Plus Compression, Economy Cabin Without Compression, Premium Cabin Plus Compression, Premium Cabin Without Compression.
Prebooked and completed business/first-class travel; seat characteristics and behavior are measured but not assigned. Linked arm/group(s): Premium Cabin Plus Compression, Premium Cabin Without Compression.
Aktiver Komparator: Premium Cabin Without Compression
Participants with a prebooked business/first-class itinerary randomized to no compression stockings.
Triplicate bilateral diameter and cross-sectional-area measurements before flight and at arrival, 24 hours, and 48 hours by an assessor masked to stocking allocation. Linked arm/group(s): Economy Cabin Plus Compression, Economy Cabin Without Compression, Premium Cabin Plus Compression, Premium Cabin Without Compression.
Prebooked and completed business/first-class travel; seat characteristics and behavior are measured but not assigned. Linked arm/group(s): Premium Cabin Plus Compression, Premium Cabin Without Compression.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Cabin-Class-by-Compression Interaction in Change in Popliteal Vein Diameter
Zeitfenster: Within 24 hours before departure and within 2 hours after arrival at the study site. 3 days
Interaction term between prebooked cabin stratum and randomized stocking assignment for the change in participant-level mean bilateral popliteal vein diameter from preflight baseline to arrival.
Within 24 hours before departure and within 2 hours after arrival at the study site. 3 days

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Randomized Compression Stocking Effect on Arrival-Related Diameter Change
Zeitfenster: Within 24 hours before departure and within 2 hours after arrival. 3 days
Adjusted mean difference between stocking and no-stocking assignments overall and separately within each cabin stratum.
Within 24 hours before departure and within 2 hours after arrival. 3 days
Adjusted Cabin-Class Association With Arrival-Related Diameter Change
Zeitfenster: Within 24 hours before departure and within 2 hours after arrival. 3 days
Adjusted mean difference between premium and economy cabin groups overall and separately by stocking assignment. This contrast is observational because cabin class is not randomized.
Within 24 hours before departure and within 2 hours after arrival. 3 days
Four-Group Popliteal Vein Diameter Trajectory
Zeitfenster: Within 24 hours before departure; within 2 hours after arrival; 24 +/- 2 hours; and 48 +/- 2 hours after arrival. 3 days
Estimated mean bilateral diameter and change from baseline in each of the four groups across postarrival time points.
Within 24 hours before departure; within 2 hours after arrival; 24 +/- 2 hours; and 48 +/- 2 hours after arrival. 3 days

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Hauptermittler: Hugo Aguilar

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

12. Januar 2024

Primärer Abschluss (Tatsächlich)

1. September 2026

Studienabschluss (Geschätzt)

1. Dezember 2026

Studienanmeldedaten

Zuerst eingereicht

2. September 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

7. September 2026

Zuerst gepostet (Tatsächlich)

9. September 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

9. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

7. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 018

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

not contempled in the patient informed concent

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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