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General Anesthesia Versus Sedation During Intra-arterial Treatment for Stroke (GASS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02822144
Recruitment Status : Completed
First Posted : July 4, 2016
Last Update Posted : August 18, 2020
Information provided by (Responsible Party):
Rennes University Hospital

Brief Summary:

In France, the annual incidence rate of acute ischaemic stroke is around 150 000 patients, 65 % of whom keep long-term disability. Several multicentric randomized controlled trials have shown the benefit of a mechanical thrombectomy in the acute phase of ischaemic stroke on functional disability, compared to a medical treatment alone (thrombolysis).

The timeliness of revascularisation is an essential factor of good prognosis. This intra-arterial treatment, associated with thrombolysis if applicable, is the reference treatment of large-vessel occlusion. The stillness of the patient is required to control the safety of the recanalization. Currently, either a general anesthesia or a sedation can be performed.

Several studies have shown a trend to superiority of the sedation but none was conducted with a high level of proof methodology.

The aim of our multicentric randomized controlled trial is to compare sedation and general anesthesia during intra-arterial thrombectomy for an acute ischaemic stroke in the anterior cerebral circulation. The main outcome will be the efficacy on the functional neurological prognosis at 3 months.

Condition or disease Intervention/treatment Phase
Stroke Drug: Etomidate Drug: Succinylcholine Drug: Propofol Drug: Remifentanil Drug: Lidocaine Phase 3

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 351 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: General Anesthesia Versus Sedation During Intra-arterial Treatment for Stroke
Actual Study Start Date : September 29, 2016
Actual Primary Completion Date : August 2020
Actual Study Completion Date : August 2020

Arm Intervention/treatment
Experimental: general anesthesia
General anesthesia with etomidate, succinylcholine, propofol and remifentanil
Drug: Etomidate
Drug: Succinylcholine
Drug: Propofol
Drug: Remifentanil
Experimental: sedation
Sedation with remifentanil and local anesthesia with lidocaine
Drug: Remifentanil
Drug: Lidocaine

Primary Outcome Measures :
  1. Score on the modified Rankin scale [ Time Frame: 3 months ]

Secondary Outcome Measures :
  1. Recanalization delay [ Time Frame: Day 1 ]
    Delay between first symptoms and last angiography

  2. Delay between patient's hospitalization and start of procedure [ Time Frame: Day 1 ]
    At the time of puncture

  3. Quality of recanalization assessed with TICI (Thrombolysis in cerebral infarction) score [ Time Frame: Day 1 ]
    At the last angiography

  4. NIHSS score [ Time Frame: Day 1 ]
  5. NIHSS score [ Time Frame: Day 7 ]
  6. Angiographic complications: number of patients wtih dissection, arterial rupture, thrombus in another territory [ Time Frame: Day 1 ]
  7. Mortality [ Time Frame: 3 months ]
  8. Number of episodes of hypo- / hypertension [ Time Frame: 24 hours after thrombectomy ]
  9. Number of patients with noradrenaline administration during anesthesia [ Time Frame: Day 1 ]
  10. Number of sedations converted to general anesthesia and reason [ Time Frame: Day 1 ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Age > 18 years
  • Body mass index < or equal to 35 kg/m² ,
  • Indication for thrombectomy, after multidisciplinary consultation,
  • Proximal artery occlusion in the anterior circulation (internal carotid artery, M1, M2,...), confirmed on imaging (angioscan or angio-MRI),
  • Written informed consent of the patient or a close / trusted person when possible, or emergency procedure,
  • Patient affiliated to or beneficiary of an health insurance

Non-inclusion Criteria:

  • Comorbidity committing short-term prognosis,
  • Hemodynamic instability,
  • Pregnant woman,
  • Contra-indication to sedation: pre-existing swallowing impairment; restless patient, not able to stay lying down; Glasgow score < 8,
  • Contra-indication to general anesthesia,
  • Intubated patient at inclusion,
  • Additional intracerebral hemorrhage,
  • Sign of occlusion in a different cerebral territory,
  • Known contra-indication to succinylcholine: hypersensitivity, hyperkaliemia,
  • Known contra-indication to one of the anesthesic agents,
  • Patient participating in another clinical trial, possibly interfering with the study procedures,
  • Patient in a known situation of deprivation of freedom, guardianship or curatorship.

Exclusion criteria:

  • Patients with deprivation of freedom will be excluded as soon as the investigator will have knowledge of the situation.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02822144

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Département d'anesthésie-réanimation - Hôpital de la Cavale Blanche, CHU de Brest
Brest, France, 29609
Service d'anesthésie-réanimation - Fondation A. de Rothschild
Paris, France, 75019
Fédération d'anesthésie-réanimation - Hôpital Pontchaillou, CHU de Rennes
Rennes, France, 35033
Service d'anesthésie-réanimation 1 - Hôpital Bretonneau, CHU de Tours
Tours, France, 37011
Sponsors and Collaborators
Rennes University Hospital
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Principal Investigator: Axelle MAURICE, MD Rennes University Hospital
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Rennes University Hospital Identifier: NCT02822144    
Other Study ID Numbers: 35RC15_8957
2016-000795-25 ( EudraCT Number )
First Posted: July 4, 2016    Key Record Dates
Last Update Posted: August 18, 2020
Last Verified: August 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Keywords provided by Rennes University Hospital:
ischemic stroke
Additional relevant MeSH terms:
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Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases
Anesthetics, Local
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Anti-Arrhythmia Agents
Voltage-Gated Sodium Channel Blockers
Sodium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Hypnotics and Sedatives
Anesthetics, Intravenous
Anesthetics, General
Analgesics, Opioid
Neuromuscular Depolarizing Agents