- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT07665320
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.
Descripción general del estudio
Estado
Condiciones
Descripción detallada
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.
Tipo de estudio
Inscripción (Estimado)
Contactos y Ubicaciones
Estudio Contacto
- Nombre: Vehkaoja
- Número de teléfono: +358407393181
- Correo electrónico: antti.vehkaoja@tuni.fi
Ubicaciones de estudio
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-
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Tampere, Finlandia
- Reclutamiento
- Tampere University Hospital
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Contacto:
- Oksala
- Número de teléfono: +3583311611
- Correo electrónico: niku.oksala@tuni.fi
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Tampere, Finlandia
- Terminado
- Tampere University
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-
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Método de muestreo
Población de estudio
Descripción
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.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
Intervención / Tratamiento |
|---|---|
|
Voluntarios sanos
|
IPG signal is measured with ThrombUS+ prototype device
Otros nombres:
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).
Otros nombres:
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.
Otros nombres:
|
|
Patients
DVT detected on other lower limb, undergoing catheter-directed thrombolysis
|
IPG signal is measured with ThrombUS+ prototype device
Otros nombres:
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).
Otros nombres:
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.
Otros nombres:
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
|---|---|
|
Impedance plethysmography (IPG) data during CDT treatment
Periodo de tiempo: 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)
|
|
Impedance plethysmography (IPG) data from healthy volunteers
Periodo de tiempo: From enrollment to the end of measurements (up to 2 hours)
|
From enrollment to the end of measurements (up to 2 hours)
|
Colaboradores e Investigadores
Patrocinador
Colaboradores
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Estimado)
Finalización del estudio (Estimado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Enfermedades Vasculares
- Enfermedades cardiovasculares
- Embolia y Trombosis
- Trombosis
- Trombosis venosa
- Técnicas y procedimientos de diagnóstico
- Diagnóstico
- Fenómenos fisiológicos circulatorios y respiratorios
- Técnicas de diagnóstico, sistema respiratorio
- Fenómenos fisiológicos respiratorios
- Técnicas de diagnóstico, cardiovascular
- Pruebas de funciones cardíacas
- Pruebas de funciones respiratorias
- Electrodiagnóstico
- Hemodinámica
- Fenómenos fisiológicos cardiovasculares
- Pletismografía
- Respiración
- Maniobra de Valsalva
- Plethysmography, Impedance
Otros números de identificación del estudio
- ThrombUS+B4
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
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