Structured Exercise Versus Endovascular Reconstruction in Post Thrombotic Syndrome

NCT ID: NCT05744843

Last Updated: 2023-09-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

54 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-05

Study Completion Date

2026-04-30

Brief Summary

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The goal of this pilot study and randomised control trial is to compare a smartphone-based exercise programme to deep venous stenting in patients with Post Thrombotic Syndrome.

The main questions it aims to answer are:

* Is exercise as effective as stenting in these patients?
* What type of exercise is useful in these patients?
* Can exercise be used to improve the results from surgery?

Participants will be split into two groups at random. They will complete a smartphone-based exercise programme or have a deep venous stent.

They will do the following tests before and after.

* Exercise testing
* Calf muscle strength and function tests
* Ultrasound of the deep veins
* Quality of life questionnaires
* Clinical assessment of their disease

They will be compared to healthy volunteers in the pilot study. Investigators will compare exercise to stenting to see if it improves symptoms in these patients. The pilot study will help decide how many patients are needed and what exercise tests will be used for the Randomised control trial.

Detailed Description

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This is a non-commercial pilot study, leading to a randomised control trial.

Primary objective:

1\) To evaluate smartphone-based exercise as an alternative to stenting in patients with IVC and Iliofemoral vein outflow obstruction secondary to Post Thrombotic Syndrome (PTS).

Secondary objectives:

1. To characterise symptomatology and response to different exercise modalities in patients with chronic venous insufficiency.
2. Evaluate exercise physiology in patients with chronic venous insufficiency before and after a supervised exercise programme.
3. To explore the use of available technologies, such as smart phone applications and wearable devices to deliver a remotely monitored exercise programme.
4. To establish a method of assessment of flow (inflow and collateral flow) in patients with symptomatic venous obstruction.
5. To understand the impact of stent shape and compression on venous flow and the subsequent patient outcomes.
6. To set criteria for the stratification of patient treatment based upon objective and quantitative measures in patients with venous claudication.

Participants will be recruited to the following three groups:

Group 1. Patients with PTS that will undergo remotely supervised exercise Group 2. Patients with PTS that will undergo stenting Group 3. Healthy volunteers

All participants will undergo series of exercise tests and imaging assessments. Participants in group 1 will have these tests repeated at the end of the exercise programme, and group 2 when they attend for their six to eight week follow up visit. Participants in group 1 will be able to re-join the waiting list for stenting on the condition that they have agreement from their named consultant. Investigators anticipate all study activities to be completed before group 1 participants would have received a date for stenting, as current waiting times for stenting is in excess of 18 months.

Patients from both groups 1 and 2 will be loaned an activity tracker (FitBit) to wear. Group 1 will be asked to wear the tracker from day 1 of the exercise programme, group 2 will be asked to wear the tracker from the first post operative day. Both groups will wear the tracker until the follow up visit. This will allow measurement of general activity in both groups and allow for monitoring of compliance with exercise in group 1.

Conditions

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Post Thrombotic Syndrome

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Smartphone-based exercise arm

Eight to twelve week smartphone delivered exercise programme

Group Type EXPERIMENTAL

exercise

Intervention Type BEHAVIORAL

cardiovascular and lower limb strengthening exercise programme

Stenting Arm

Deep venous stenting as standard of care

Group Type ACTIVE_COMPARATOR

Deep venous stenting

Intervention Type PROCEDURE

Planned surgical intervention

Healthy Volunteers

Healthy Volunteers for baseline testing

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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exercise

cardiovascular and lower limb strengthening exercise programme

Intervention Type BEHAVIORAL

Deep venous stenting

Planned surgical intervention

Intervention Type PROCEDURE

Other Intervention Names

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remote exercise programme smartphone-based exercise programme Endovascular Stent reconstruction of Deep Vein

Eligibility Criteria

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Inclusion Criteria

• Patients with symptomatic chronic venous outflow obstruction secondary to PTS or other cause affecting the Inferior Vena Cava (IVC) or iliofemoral vein(s) for greater than 12 months duration AND clinical indication for Deep Venous Stenting.

Exclusion Criteria

* Deep Vein Thrombosis or Pulmonary Embolism within the last 12 months
* Significant or untreated left sided heart disease
* Significant or untreated respiratory disease
* Significant renal disease
* Significant liver disease
* Significant Musculoskeletal or Neurological disease
* Active cancer
* Life expectancy of less than 2 years or non-ambulatory status
* Current or Planned pregnancy within the study period
* Any other contraindication to exercise
* Any impairment preventing the provision of informed consent and compliance with study protocol
* Healthy Volunteers in the control group with presence of any arterial or venous disease
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Guy's and St Thomas' NHS Foundation Trust

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Stephen A Black, FRCS

Role: PRINCIPAL_INVESTIGATOR

St Thomas' Hospital

Locations

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St. Thomas' Hospital, Guy's and St. Thomas' NHS Foundation Trust

London, , United Kingdom

Site Status RECRUITING

Countries

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United Kingdom

Central Contacts

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Ehsanul K Choudhury, MRCS

Role: CONTACT

+44 20 7188 7188 ext. 53821

Facility Contacts

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Ehsanul K Choudhury, MRCS

Role: primary

+44 20 71887188 ext. 53821

References

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Flumignan RL, Nakano LC, Flumignan CD, Baptista-Silva JC. Angioplasty or stenting for deep venous thrombosis. Cochrane Database Syst Rev. 2025 Feb 19;2(2):CD011468. doi: 10.1002/14651858.CD011468.pub2.

Reference Type DERIVED
PMID: 39968829 (View on PubMed)

Other Identifiers

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315612

Identifier Type: -

Identifier Source: org_study_id

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