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- Ensayo clínico NCT07567495
Adding Dexmedetomidine or Clonidine to Spinal Anesthesia for Cesarean Delivery
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
While spinal anesthesia almost always creates a reasonably comfortable operative/birth experience, a significant proportion of women do experience significance "pressure" or "pulling" and some do have sensations described as painful during the operation. This has received increased interest in both the medical and lay press in recent years. The main medication in a spinal anesthetic is the local anesthetic, usually bupivacaine, but a variety of adjuvants can and are used to improve the analgesia and decrease sensation (or increase the time period of effectiveness) of the anesthetic. Opioids (usually fentanyl or sufentanil for intraoperative benefits and morphine for postoperative analgesia) are very commonly added to spinal anesthetics for cesarean delivery in the United States.
Somewhat less commonly, but increasingly, alpha-2 adrenergic agonists (clonidine or dexmedetomidine), which have sedative and analgesic properties (mostly analgesic when given into spinal fluid) are added in an attempt to improve the intraoperative experience and/or lengthen the time the block is effective. These adjuvants, although not approved specifically for this use in spinal anesthesia, have become more widely used in spinal anesthesia, including for cesarean delivery, and have been mentioned/recommended in recent statements by the American Society of Anesthesiologists for use when additional or improved analgesia may be needed or desired.
The quality of the studies of intrathecal dexmedetomidine as part of spinal anesthesia for cesarean delivery is quite poor. This study will investigate whether clonidine or dexmedetomidine, when added to a spinal anesthetic containing bupivacaine/fentanyl/morphine, will improve intraoperative analgesia/anesthesia, decrease unwanted sensation, and assess what the other effects will be (prolongation of sensory and motor block, effects on blood pressure, other side effects).
Tipo de estudio
Inscripción (Estimado)
Fase
- Fase 4
Contactos y Ubicaciones
Estudio Contacto
- Nombre: Richard M Smiley, MD, PhD
- Número de teléfono: 914-584-9531
- Correo electrónico: rms7@cumc.columbia.edu
Ubicaciones de estudio
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New York
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New York, New York, Estados Unidos, 10032
- Columbia University Irving Medical Center/NewYork Presbyterian Hospital
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Investigador principal:
- Ruth Landau, MD
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Contacto:
- Richard M Smiley, MD, PhD
- Número de teléfono: 914-584-9531
- Correo electrónico: rms7@cumc.columbia.edu
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Contacto:
- Ruth Landau, MD
- Número de teléfono: 206-605-4527
- Correo electrónico: rl262@cumc.columbia.edu
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Sub-Investigador:
- Richard M Smiley, MD, PhD
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Descripción
Inclusion Criteria:
- Pregnant women undergoing cesarean delivery with spinal anesthesia
Exclusion Criteria:
- Significant cardiovascular, psychiatric or respiratory disease
- using opioids or with chronic pain syndrome
- Multiple gestation
- BMI >40 kg/m2
- Quaternary or greater cesarean
- < 37 weeks gestation
- Non-English or Spanish speaking
- planned vertical skin incision
- planned vertical (classical) uterine incision
- allergy to clonidine, dexmedetomidine or other study drug
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación factorial
- Enmascaramiento: Cuadruplicar
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Experimental: Clonidine
Participants will receive 30 mcg clonidine in addition to the standard spinal anesthetics (12 mg bupivacaine, 15 mcg fentanyl, 150 mcg morphine).
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30 mcg Clonidine will be given by intrathecal administration
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Experimental: Dexmedetomidine
Participants will receive 4 mcg dexmedetomidine in addition to the standard spinal anesthetics (12 mg bupivacaine, 15 mcg fentanyl, 150 mcg morphine).
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4 mcg Dexmedetomidine will be given by intrathecal administration
Otros nombres:
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Sin intervención: Control
Participants will receive standard spinal anesthetics (12 mg bupivacaine, 15 mcg fentanyl, 150 mcg morphine).
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Incidence of intraoperative discomfort
Periodo de tiempo: during cesarean surgery
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The primary outcome of this study is the incidence of self-reported intraoperative discomfort, defined as pain or uncomfortable pressure, tugging, pulling feeling during cesarean delivery. At specific timepoints during cesarean delivery surgery, the patient will be asked "Do you feel uncomfortable sensations (pain, pressure, pulling, tugging)?" If the answer is "yes, " she will be asked "Do you want medication to treat it?" The timepoints specified will be:
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during cesarean surgery
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Obstetric Quality of Recovery (ObsQoR-10) Score
Periodo de tiempo: 0-6, 6-12, 12-24, 24-48 hours after surgery
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Postoperative pain will be assessed by the self-reported Obstetric Quality of Recovery Score after surgery.
The full scale is 0 to 10, with 0 being no pain, and 10 being the worst pain imaginable.
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0-6, 6-12, 12-24, 24-48 hours after surgery
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Length of motor and sensory block
Periodo de tiempo: 2-5 hours
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How long form spinal injection to regaining ability to bend knees and feel sensation in lumbar area
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2-5 hours
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Incidence of Hypotension
Periodo de tiempo: first 20 minutes after spinal, or until delivery
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1. Decrease in baseline systolic blood pressure greater than 20%, or to less than 90 mm HG
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first 20 minutes after spinal, or until delivery
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Phenylephrine use
Periodo de tiempo: 20 minutes
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Total phenylephrine infusion given over first 20 minutes after spinal (or until delivery).
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20 minutes
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PACU side-effects/events
Periodo de tiempo: 2-3 hours postop
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Events in the post-anesthesia care unit:
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2-3 hours postop
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Blood pressure
Periodo de tiempo: ~ 20 minutes from spinal injection
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Systolic and diastolic blood pressure every minute from spinal injection for 20 minutes or until delivery (whichever comes first)
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~ 20 minutes from spinal injection
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Additional vasopressor use
Periodo de tiempo: From Spinal anesthesia to 20 minutes or delivery (whichever comes first)
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Any phenylephrine, ephedrine or epineprhine given other than phenylephrine infusion
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From Spinal anesthesia to 20 minutes or delivery (whichever comes first)
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Otras medidas de resultado
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Numerical reading on PMD-200
Periodo de tiempo: 1-2 hours (intraoperatve)
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Reading on the PMD (an FDA-approved device that uses a finger probe to detect "nociception," " a measure of sensation/discomfort/pain. The readngs will be recorded at the following timepoints:
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1-2 hours (intraoperatve)
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Opioid use postoperatively
Periodo de tiempo: 48 hours
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Milligram morphine equivalents used over 48 hours postop
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48 hours
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Side effects
Periodo de tiempo: 48 hours postop
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nausea/vomiting, itching
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48 hours postop
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UA and UV blood gases
Periodo de tiempo: at delivery
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Umbilical artery and vein blood gases at birth
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at delivery
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Need for neonatal resuscitation
Periodo de tiempo: birth to 2 hours
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need for care beyond routine neonatal care
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birth to 2 hours
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Heart rate (pulse)
Periodo de tiempo: Spinal injection to 20 min later or delivery (~20 min)
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2. Heart rate every minute from spinal injection for 20 minutes or until delivery (whichever is first)
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Spinal injection to 20 min later or delivery (~20 min)
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Ruth Landau, MD, Columbia University
Publicaciones y enlaces útiles
Publicaciones Generales
- New York Times, Podcast, The Retrievals, Season 2, episodes 1-4.
- Orbach-Zinger S, Azem K, Bar M, Heesen P, Kozuch D, Furman D, Cohen R, Kashkush A, Izyumsky D, Fein S, Frenkel A, Shavialiou A, Binyamin Y. Intra-operative sensation during caesarean delivery under neuraxial anaesthesia: A prospective cohort study mapping sensory experiences. Eur J Anaesthesiol. 2026 Mar 1;43(3):217-225. doi: 10.1097/EJA.0000000000002317. Epub 2025 Nov 11.
- Takalo E, Karpala M, An X, Cobb B, Zhao S, Bari R, Hylton M, Grant S, Schoenherr J. Intrathecal dexmedetomidine for cesarean delivery and postoperative outcomes: a single-center retrospective cohort study (2019-2020). Int J Obstet Anesth. 2026 Feb;65:104819. doi: 10.1016/j.ijoa.2025.104819. Epub 2025 Nov 14.
- Fernandes HS, Bliacheriene F, Vago TM, Corregliano GT, Torres ML, Francisco RP, Ashmawi HA. Clonidine Effect on Pain After Cesarean Delivery: A Randomized Controlled Trial of Different Routes of Administration. Anesth Analg. 2018 Jul;127(1):165-170. doi: 10.1213/ANE.0000000000003319.
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Estimado)
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
Otros números de identificación del estudio
- ACYY0438
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
Descripción del plan IPD
Criterios de acceso compartido de IPD
Tipo de información de apoyo para compartir IPD
- PROTOCOLO DE ESTUDIO
- CIF
Información sobre medicamentos y dispositivos, documentos del estudio
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