- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT01541436
Remote Ischemic Preconditioning Mechanism Study
Remote Ischemic Preconditioning Effects on Central and Peripheral Sensitization in Healthy Volunteers-A Pilot Study
This research is being done because pain is a significant problem for patients with a variety of medical problems and following surgery or traumatic injury. Currently available pain medications may not relieve all types of pain or may relieve pain only at doses that produce side effects and potential complications.
Although Remote Ischemic Preconditioning (RIPC) appears promising, there remain several unanswered questions about how it works. This research trial will help determine how RIPC may activate the bodies natural pain control system. The goals of this study are to see if RIPC has any effect 1) on a small area of skin that will be expose to a small amount of UV- B radiation (a mild sunburn), 2) on acute thermal heat temperatures that will be applied to skin, and 3) on the sunburn-like sensation to light touch after putting capsaicin cream (the active ingredient in hot chili peppers) on skin.
Remote ischemic preconditioning is done by inflating a balloon (very similar to a blood pressure cuff) on the leg until it blocks blood flow for a few minutes. The cuff is then deflated and blood flow resumes. The process is repeated up to three times. This procedure causes the body to increase its natural pain relief system that may help to decrease the amount of postsurgical pain.
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
Tipo de estudio
Inscripción (Actual)
Fase
- Fase temprana 1
Contactos y Ubicaciones
Ubicaciones de estudio
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North Carolina
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Winston-Salem, North Carolina, Estados Unidos, 27157
- WakeForestUBMC
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- healthy volunteers of both sexes ASA 1 or II classification
- between the ages of 18-55
- weighing less than 250 pounds
- without chronic pain
- not taking analgesics
- off caffeine for 2 days.
Exclusion Criteria:
- pregnancy
- allergy to capsaicin
- lower extremity vascular insufficiency
- active treatment for DVT
- severe thigh pain
- taking psychotropic medications, including anti-depressants.
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Ciencia básica
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación cruzada
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Comparador activo: Capsaicin, UV-B, RIPC
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The participants will have one disposable tourniquet applied to the left mid thigh by research personnel.
The participants will then be randomized to the treatment group or sham group.
The treatment group will receive 3 cycles of RIPC to the left lower leg by occluding blood flow at the thigh with a pneumatic cuff.
Each cycle will consist of 5 minutes of ischemia by inflating the cuff to 300 mmHg followed by 5 minutes of reperfusion.
The sham group will have the cuff inflated to no more than 15mmHg for three cycles as described above.
Areas of hypersensitivity and allodynia will be obtained every 40 min for 280 min following the end of capsaicin application.
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Comparador falso: Capsaicin, UV-B
|
The participants will have one disposable tourniquet applied to the left mid thigh by research personnel.
The participants will then be randomized to the treatment group or sham group.
The treatment group will receive 3 cycles of RIPC to the left lower leg by occluding blood flow at the thigh with a pneumatic cuff.
Each cycle will consist of 5 minutes of ischemia by inflating the cuff to 300 mmHg followed by 5 minutes of reperfusion.
The sham group will have the cuff inflated to no more than 15mmHg for three cycles as described above.
Areas of hypersensitivity and allodynia will be obtained every 40 min for 280 min following the end of capsaicin application.
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Areas of hyperalgesia and allodynia to mechanical stimuli.
Periodo de tiempo: 24 hours
|
Hyperalgesia will be measured with vonFrey fibers and allodynia will be measured with a cotton wisp.
The area will be measured in cm2.
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24 hours
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Pain intensity and unpleasantness to mechanical stimuli
Periodo de tiempo: 24 hours
|
Using a Visual Analog Sliding Scale the intensity and unpleasantness will be measured in centimeters.
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24 hours
|
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Presence of parathesias where RIPC was used
Periodo de tiempo: 24 hours
|
After a brief tourniquet application I fully expect participants to have some degree of parasthesias.
Using a standard rating scale I will record and report this.
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24 hours
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Scott A Miller, MD, Wake Forest University Health Sciences
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
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
Otros números de identificación del estudio
- 00019284
Información sobre medicamentos y dispositivos, documentos del estudio
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