- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT02118233
Cognitive Outcome After Carotid Surgery
Aperçu de l'étude
Statut
Les conditions
Description détaillée
At the present time, large multi-center clinical trials support the use of carotid revascularization for symptomatic carotid stenosis and for asymptomatic carotid stenosis (greater than 60%) to prevent stroke. Guidelines supporting the use of carotid endarterectomy for asymptomatic stenosis are based largely on the Asymptomatic Carotid Atherosclerosis Study (ACAS) which reported a 47% relative risk reduction for ipsilateral stroke or death in patients randomized to surgery compared to best medical management over 5 years. These data were further substantiated by the recent publication of the Medical Research Council Asymptomatic Carotid Surgery (ACST) trial results (1); however, both trials estimated that at least 40 operative procedures were required to prevent a single disabling stroke or death in one patient after 5 years (2). These data underscore the importance of understanding the cognitive risks of carotid revascularization and developing strategies to limit factors that contribute to this risk especially in asymptomatic patients.
The purpose of this study is to better understand the effect of carotid revascularization (using either carotid endarterectomy (CEA) or percutaneous carotid angioplasty and stenting (CAS)) on cognitive outcome by prospectively collecting cerebral blood flow data and cognitive testing data prior to and after carotid revascularization procedures.
Type d'étude
Inscription (Anticipé)
Contacts et emplacements
Lieux d'étude
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Massachusetts
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Burlington, Massachusetts, États-Unis, 01805
- Lahey Clinic, Inc.
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New York
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Buffalo, New York, États-Unis, 14203
- University of Buffalo Neurosurgery (UBNS)
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Stony Brook, New York, États-Unis, 11794-8122
- StonyBrook
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-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Patients with asymptomatic (defined as no symptoms in past 6 months) carotid stenosis
- Patients with hemodynamically significant carotid artery stenosis (according to CREST criteria: ≥ 60% by angiography, OR ≥ 70% by ultrasound, OR ≥ 80% by CTA or MRA)
Exclusion Criteria:
- Patients with prior large vessel infarct
- Patients with intracranial stenosis
- Patients with major depression
- Patients with Alzheimer disease (clinically defined or Wechsler IQ <80)
- Patients who have had previous ipsilateral carotid surgery
- Patients with baseline dementia defined as: Mini-Mental Status Examination score < 21 OR Mini-Mental score ≥21 AND Baseline HVLT scores more than 3 standard deviations below normal or FAS scores more than 2 standard deviations below normal OR other clinical symptoms that were not as evident on direct cognitive assessment (e.g. sundowning, getting lost while driving).
Note: A control group would be comprised of about 15 patients who meet eligibility criteria as above, but elect to have their condition followed rather than undergo revascularization.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
|---|
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Carotid Endarterectomy (CEA)
Surgical Revascularization- Carotid Endarterectomy (CEA)
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Carotid Angioplasty and Stenting (CAS)
Surgical Revascularization- Carotid Angioplasty and Stenting (CAS)
|
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Control Group- Medical Management
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Measurement of change in cerebral blood flow from pre-op/baseline to 1 month post-operatively.
Délai: preoperative/baseline and 1 month postoperative/from baseline
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Quantitative flow MRA studies will be performed pre-operative and postoperative for those undergoing carotid revascularization surgery.
Those not undergoing surgery will have this test upon study enrollment and approximately 1 month from study enrollment date.
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preoperative/baseline and 1 month postoperative/from baseline
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Mini Mental Status Exam
Délai: Pre-operative/baseline
|
A standardized cognitive measure
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Pre-operative/baseline
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Trail Making- Part A
Délai: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
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Standardized cognitive measure that assesses verbal fluency
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Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
|
Trail Making- Part B
Délai: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
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Standardized cognitive measure that assesses executive functioning
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Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
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Hopkins Verbal Learning Test (HVLT)
Délai: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
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Standardized measure to assess new learning and memory
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Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
|
D-KEFS Verbal Fluency Test (FAS)
Délai: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
Standardized measure to assess letter fluency
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Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
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Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Zoher Ghogawala, MD, Lahey Clinic, Inc.
Publications et liens utiles
Publications générales
- Halliday A, Mansfield A, Marro J, Peto C, Peto R, Potter J, Thomas D; MRC Asymptomatic Carotid Surgery Trial (ACST) Collaborative Group. Prevention of disabling and fatal strokes by successful carotid endarterectomy in patients without recent neurological symptoms: randomised controlled trial. Lancet. 2004 May 8;363(9420):1491-502. doi: 10.1016/S0140-6736(04)16146-1. Erratum In: Lancet. 2004 Jul 31;364(9432):416.
- Rothwell PM, Goldstein LB. Carotid endarterectomy for asymptomatic carotid stenosis: asymptomatic carotid surgery trial. Stroke. 2004 Oct;35(10):2425-7. doi: 10.1161/01.STR.0000141706.50170.a7. Epub 2004 Aug 26. No abstract available.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 2013-009
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .