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Impedance Plethysmography Based Deep Vein Thrombosis Monitoring During Catheter-directed Thrombolysis
The purpose of this study is to collect data on blood circulation using a multi-frequency impedance plethysmography device developed in the ThrombUS+ project. Impedance plethysmography (IPG) is a non-invasive method that measures changes in blood volume using electrodes placed on the skin. The collected data will be used for device development, the improvement of diagnostic data analysis methods, and AI training.
A total of 40 participants will be recruited for this study, with 20 healthy volunteers in Tampere University and 20 patients undergoing thrombolytic therapy for DVT at Tampere University Hospital.
Studie Overzicht
Toestand
Conditie
Gedetailleerde beschrijving
This study aims to collect IPG data set from healthy volunteers and DVT patients using ThrombUS+ prototype device developed during the project and commercial IPG device as a reference. The data will be used to develop ThrombUS+ IPG device, its signal processing and analysis algorithms and to train ML models.
Objectives of the study are to
- Collect IPG data for developing signal processing, data analysis and ML algorithms for DVT detection and assessment.
- Evaluate the performance of the developed methods to gold standard references including angiography, ultrasound imaging and venous occlusion plethysmography.
- Investigate whether multi-frequency IPG measurement improves the performance of DVT detection compared to single frequency measurement and determine the optimal measurement frequency.
- Investigate and compare different interventions to cause changes in venous blood volume for DVT detection, such as venous occlusion by thigh cuff, active respiration and muscle activation.
Secondary objectives are
1) To investigate methods for simulating DVT and to compare the performance of these methods for DVT simulation.
Studietype
Inschrijving (Geschat)
Contacten en locaties
Studiecontact
- Naam: Vehkaoja
- Telefoonnummer: +358407393181
- E-mail: antti.vehkaoja@tuni.fi
Studie Locaties
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Tampere, Finland
- Werving
- Tampere University Hospital
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Contact:
- Oksala
- Telefoonnummer: +3583311611
- E-mail: niku.oksala@tuni.fi
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Tampere, Finland
- Voltooid
- Tampere University
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria for Patients group:
- Age: 18 or older;
- DVT detected on other lower limb;
- Suitable for CDT treatment;
- Ability to give informed consent;
- Volunteering for the study.
Exclusion Criteria for Patients group:
- Age under 18 years;
- Inability to give informed consent;
- Denial;
- Too injured skin in the measurement area
Inclusion Criteria for Healthy volunteers group:
- Age: 18 or older;
- Ability to give informed consent;
- Volunteering for the study
Exclusion Criteria for Healthy volunteers group:
- Diagnosed DVT in lower limbs;
- Age under 18 years;
- Inability to give informed consent;
- Denial;
- Too injured skin in the measurement area.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
Interventie / Behandeling |
|---|---|
|
Gezonde vrijwilligers
|
IPG signal is measured with ThrombUS+ prototype device
Andere namen:
In VOP measurement, a temporal blood restriction is caused by an occlusive cuff blocking venous outflow but allowing arterial inflow.
The cuff intervention causes a change in venous blood volume, and it can be measured by electrical impedance plethysmography (IPG).
Andere namen:
The first exercise is the Valsalva maneuver, where the subject first inhales and then pushes out the breath while the larynx is closed.
In the second exercise, the subject inhales for approximately 10 seconds, holds the breath for approximately 5 seconds, and then breathes out.
Finally, the subject moves the ankles to contract calf muscles, and further to cause changes in venous blood volume.
The IPG signal is measured on both calves by ThrombUS+ prototype device during these exercises.
Andere namen:
|
|
Patients
DVT detected on other lower limb, undergoing catheter-directed thrombolysis
|
IPG signal is measured with ThrombUS+ prototype device
Andere namen:
In VOP measurement, a temporal blood restriction is caused by an occlusive cuff blocking venous outflow but allowing arterial inflow.
The cuff intervention causes a change in venous blood volume, and it can be measured by electrical impedance plethysmography (IPG).
Andere namen:
The first exercise is the Valsalva maneuver, where the subject first inhales and then pushes out the breath while the larynx is closed.
In the second exercise, the subject inhales for approximately 10 seconds, holds the breath for approximately 5 seconds, and then breathes out.
Finally, the subject moves the ankles to contract calf muscles, and further to cause changes in venous blood volume.
The IPG signal is measured on both calves by ThrombUS+ prototype device during these exercises.
Andere namen:
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
|
Impedance plethysmography (IPG) data during CDT treatment
Tijdsspanne: From enrollment to the end of the CDT treatment (up to 2 days)
|
From enrollment to the end of the CDT treatment (up to 2 days)
|
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Impedance plethysmography (IPG) data from healthy volunteers
Tijdsspanne: From enrollment to the end of measurements (up to 2 hours)
|
From enrollment to the end of measurements (up to 2 hours)
|
Medewerkers en onderzoekers
Sponsor
Medewerkers
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
- Vaatziekten
- Hart-en vaatziekten
- Embolie en trombose
- Trombose
- Veneuze trombose
- Diagnostische technieken en procedures
- Diagnose
- Circulatoire en ademhalingsfenomenen
- Diagnostische technieken, ademhalingssysteem
- Ademhalige fysiologische fenomenen
- Diagnostische technieken, cardiovasculair
- Hartfunctietests
- Ademhalingsfunctietests
- Elektrodiagnose
- Hemodynamica
- Cardiovasculaire fysiologische fenomenen
- Plethysmografie
- Ademhaling
- Valsalva-manoeuvre
- Plethysmography, Impedance
Andere studie-ID-nummers
- ThrombUS+B4
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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