- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT02118233
Cognitive Outcome After Carotid Surgery
Panoramica dello studio
Stato
Condizioni
Descrizione dettagliata
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.
Tipo di studio
Iscrizione (Anticipato)
Contatti e Sedi
Luoghi di studio
-
-
Massachusetts
-
Burlington, Massachusetts, Stati Uniti, 01805
- Lahey Clinic, Inc.
-
-
New York
-
Buffalo, New York, Stati Uniti, 14203
- University of Buffalo Neurosurgery (UBNS)
-
Stony Brook, New York, Stati Uniti, 11794-8122
- StonyBrook
-
-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
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.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Coorti e interventi
Gruppo / Coorte |
|---|
|
Carotid Endarterectomy (CEA)
Surgical Revascularization- Carotid Endarterectomy (CEA)
|
|
Carotid Angioplasty and Stenting (CAS)
Surgical Revascularization- Carotid Angioplasty and Stenting (CAS)
|
|
Control Group- Medical Management
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Measurement of change in cerebral blood flow from pre-op/baseline to 1 month post-operatively.
Lasso di tempo: preoperative/baseline and 1 month postoperative/from baseline
|
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.
|
preoperative/baseline and 1 month postoperative/from baseline
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Mini Mental Status Exam
Lasso di tempo: Pre-operative/baseline
|
A standardized cognitive measure
|
Pre-operative/baseline
|
|
Trail Making- Part A
Lasso di tempo: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
Standardized cognitive measure that assesses verbal fluency
|
Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
|
Trail Making- Part B
Lasso di tempo: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
Standardized cognitive measure that assesses executive functioning
|
Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
|
Hopkins Verbal Learning Test (HVLT)
Lasso di tempo: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
Standardized measure to assess new learning and memory
|
Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
|
D-KEFS Verbal Fluency Test (FAS)
Lasso di tempo: Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
Standardized measure to assess letter fluency
|
Preoperative/baseline, 1 month postoperative/post baseline, 6 months postoperative/post baseline, and 1 year postoperative/post baseline
|
Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Zoher Ghogawala, MD, Lahey Clinic, Inc.
Pubblicazioni e link utili
Pubblicazioni generali
- 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.
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- 2013-009
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .