- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT02118233
Cognitive Outcome After Carotid Surgery
Tutkimuksen yleiskatsaus
Tila
Ehdot
Yksityiskohtainen kuvaus
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.
Opintotyyppi
Ilmoittautuminen (Odotettu)
Yhteystiedot ja paikat
Opiskelupaikat
-
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Massachusetts
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Burlington, Massachusetts, Yhdysvallat, 01805
- Lahey Clinic, Inc.
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New York
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Buffalo, New York, Yhdysvallat, 14203
- University of Buffalo Neurosurgery (UBNS)
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Stony Brook, New York, Yhdysvallat, 11794-8122
- StonyBrook
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-
Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
Hyväksyy terveitä vapaaehtoisia
Sukupuolet, jotka voivat opiskella
Näytteenottomenetelmä
Tutkimusväestö
Kuvaus
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.
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
Kohortit ja interventiot
Ryhmä/Kohortti |
|---|
|
Carotid Endarterectomy (CEA)
Surgical Revascularization- Carotid Endarterectomy (CEA)
|
|
Carotid Angioplasty and Stenting (CAS)
Surgical Revascularization- Carotid Angioplasty and Stenting (CAS)
|
|
Control Group- Medical Management
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Measurement of change in cerebral blood flow from pre-op/baseline to 1 month post-operatively.
Aikaikkuna: 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
|
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Mini Mental Status Exam
Aikaikkuna: Pre-operative/baseline
|
A standardized cognitive measure
|
Pre-operative/baseline
|
|
Trail Making- Part A
Aikaikkuna: 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
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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
Aikaikkuna: 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
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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)
Aikaikkuna: 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)
Aikaikkuna: 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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Yhteistyökumppanit ja tutkijat
Sponsori
Tutkijat
- Päätutkija: Zoher Ghogawala, MD, Lahey Clinic, Inc.
Julkaisuja ja hyödyllisiä linkkejä
Yleiset julkaisut
- 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.
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus
Ensisijainen valmistuminen (Todellinen)
Opintojen valmistuminen (Todellinen)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Arvio)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
Muut tutkimustunnusnumerot
- 2013-009
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