NCT03737786Recruiting
SEACOAST 1- SEdAtion With COllAteral Support in Endovascular Therapy for Acute Ischemic Stroke
Title : SEACOAST 1 SEdAtion With COllAteral Support in Endovascular Therapy for Acute Ischemic Stroke 1: a Randomized Controlled Phase 2B Clinical Trial
Source: ClinicalTrials.gov · Last updated 26 Dec 2025
Brief summary (registry, in English)
SEACOAST 1 is a prospective, randomized, blinded endpoint trial comparing collateral vigor and clinical outcomes, with different forms of GA in patients with acute ischemic stroke due to anterior circulation large vessel occlusion (LVO) undergoing mechanical thrombectomy. The study compares GA with normocarbia (GAN) versus GA with mild hypercarbia (GAH), with a primary outcome of collateral robustness at measured at catheter angiography and clinical efficacy as secondary outcome. It is anticipated that the SEACOAST 1 will be followed by a larger, pivotal trial, SEACOAST 2, with primary clinical endpoints, in which the best method of GA identified in SEACOAST 1 is compared with the alternative strategy of anesthesia care (MAC) with minimal or no sedation. The current study focuses uppn SEACOAST 1, which is to be conducted in University of California, Los Angeles Ronald Reagan Medical Center and Santa Monica Medical Center. All acute stroke patients who arrive to one of these two stroke centers and are deemed eligible for thrombectomy will be considered for the proposed study. Physician-investigators will determine study eligibility. Informed consent to participate in the study will be obtained from legally authorized representatives or competent patients. For non-competent patients without on-scene legally authorize representatives, the consent process will utilize enrollment in emergency circumstances with exemption of informed consent (EFIC).
- Status (registry)
- Recruiting
- Study type
- Interventional
- Enrollment
- 90 (estimated)
- First submitted
- 5 Nov 2018
- Start date
- 28 Nov 2019
- Primary completion date
- Jun 2026
- Lead sponsor
- University of California, Los Angeles
- Diseases
- Stroke
- NCT number
- NCT03737786
What you commit to
- Study type: Interventional
- Planned participants: 90
- From 28 Nov 2019 to the primary completion date, Jun 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Who the study is looking for
- Age ≥18
- NIHSS ≥ 6 within 0-16h or NIHSS ≥ 10 within 16-24h
- Anterior circulation large vessel occlusion (ICA, M1, M2)
- ASPECTS score ≥ 6 within the first 6h, or DEFUSE trial imaging criteria within 6-16h; or DAWN trial clinical/imaging mismatch criteria within 16-24h
- Premorbid modified Rankin Scale (mRS) 0-2
- Patient deemed candidate for mechanical thrombectomy with anticipated groin puncture within 24 hours of last known well and within 90 min of ED arrival
- Clinical Exclusion Criteria:
- Intubation in ED prior to anesthesiologist evaluation, or intubation for any other medical reason other than planned thrombectomy
- Rapid neurological improvement, suggestive of revascularization
- Known serious sensitivity to radiographic contrast agents.
- Current participation in another investigational drug or device treatment study.
- Renal Failure as defined by a serum creatinine \> 2.0 mg/dl (or 176.8 μmol/l) or Glomerular Filtration Rate \[GFR\] \< 30.
- Subject who requires hemodialysis or peritoneal dialysis, or who have a contraindication to an angiogram for whatever reason.
- Life expectancy of less than 90 days.
- Clinical presentation suggests a subarachnoid hemorrhage, even if initial CT or MRI scan is normal
- Subject with a co-morbid disease or condition that would confound the neurological and functional evaluations or compromise survival or ability to complete follow up assessments.
- Subject currently uses or has a recent history of illicit drug(s) or abuses alcohol (defined as regular or daily consumption of more than 4 alcoholic drinks per day.
- Septic or cardiogenic shock with severe life-threatening hypotension
- Imaging Exclusion Criteria:
- Computed tomography (CT) or Magnetic Resonance Imaging (MRI) evidence of acute intracranial hemorrhage on presentation.
- CT or MRI evidence of mass effect or intracranial tumor (except small meningioma).
- CT showing hypodensity or MRI showing hyperintensity involving greater than 1/3 of the middle cerebral artery (MCA) territory (or in other territories, \>100 cc of tissue) on presentation.
- Baseline non contrast CT or DWI MRI evidence of a moderate/large core defined as extensive early ischemic changes of Alberta Stroke Program Early CT score (ASPECTS) \< 6
- CT or MRI evidence that ischemia is not in anterior circulation distribution.
- Imaging evidence that suggests, in the opinion of the investigator, the subject is not appropriate for mechanical thrombectomy intervention (e.g., inability to navigate to target lesion, moderate/large infarct with poor collateral circulation, etc.).
- Anesthesia exclusion criteria (relative):
- History of Malignant Hyperthermia
- History of allergic reaction/anaphylaxis to anesthetic drugs
- Inability to tolerate supine position (severe CHF)
- Chronic O2 dependence or any other known pulmonary condition that might lead to difficult extubation and prolonged mechanical ventilation including known pulmonary hypertension
Age in the registry: 18 years to 110 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| UCLA Stroke Center Coordinator of this site? Confirm its status | Los Angeles | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.