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- Ensaio Clínico NCT07567495
Adding Dexmedetomidine or Clonidine to Spinal Anesthesia for Cesarean Delivery
Visão geral do estudo
Status
Condições
Intervenção / Tratamento
Descrição detalhada
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 estudo
Inscrição (Estimado)
Estágio
- Fase 4
Contactos e Locais
Contato de estudo
- Nome: Richard M Smiley, MD, PhD
- Número de telefone: 914-584-9531
- E-mail: rms7@cumc.columbia.edu
Locais de estudo
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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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Contato:
- Richard M Smiley, MD, PhD
- Número de telefone: 914-584-9531
- E-mail: rms7@cumc.columbia.edu
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Contato:
- Ruth Landau, MD
- Número de telefone: 206-605-4527
- E-mail: rl262@cumc.columbia.edu
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Subinvestigador:
- Richard M Smiley, MD, PhD
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
- Adulto
- Adulto mais velho
Aceita Voluntários Saudáveis
Descrição
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
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Tratamento
- Alocação: Randomizado
- Modelo Intervencional: Atribuição fatorial
- Mascaramento: Quadruplicar
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
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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
Outros nomes:
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Sem intervenção: Control
Participants will receive standard spinal anesthetics (12 mg bupivacaine, 15 mcg fentanyl, 150 mcg morphine).
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Incidence of intraoperative discomfort
Prazo: 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 resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Obstetric Quality of Recovery (ObsQoR-10) Score
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: ~ 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
Prazo: 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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Outras medidas de resultado
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Numerical reading on PMD-200
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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
Prazo: 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)
Prazo: 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
Publicações e links úteis
Publicações Gerais
- 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.
Datas de registro do estudo
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Mais Informações
Termos relacionados a este estudo
Palavras-chave
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Outros números de identificação do estudo
- ACYY0438
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