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Brain Lesions After Transcatheter Aortic Valve Replacement

27. december 2021 opdateret af: Mao Chen, West China Hospital
The Brain lEsions after TrAnscatheter aorTic ValvE Replacement (BETTER) registry is a prospective, observational, multi-center registry aiming to assess the presence of new brain microbleeds assessed on susceptibility-weighted imaging at 3 enrolling sites, in China (West China Hospital, Sichuan University), UK (St Thomas' Hospital) and Denmark (Rigshospitalet, University of Copenhagen). The main study arm is planned to include 100 patients with symptomatic severe aortic stenosis undergoing transfemoral TAVR of any devices and 50 isolated bioprosthetic SAVR patients treated during the enrollment period as a control arm.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

"Silent" stroke post-TAVR presents as asymptomatic brain ischemic lesions detected on diffusion-weighted magnetic resonance imaging (DW-MRI), with an incidence ranging from 60% to 100% in different studies. On the contrary, hemorrhagic lesions are not systematically studied given the poor visualization of small hemorrhage (i.e. microbleeds) on traditional T1, T2 or DW-MRI sequences. We have previously identified an incidence of new brain microbleeds early after TAVR of 100% with the routine use of susceptibility-weighted imaging (SWI). We hypothesize that new brain microbleeds are prevalent in patients with aortic stenosis after either TAVR or SAVR. The key objective of this registry is to evaluate the incidence, distribution and clinical impact of new brain microbleeds after transfemoral TAVR in patients with symptomatic severe aortic stenosis, in comparison with SAVR.

Undersøgelsestype

Observationel

Tilmelding (Forventet)

150

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

60 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Patients with symptomatic severe aortic stenosis (>60 years old) being scheduled for either transfemoral TAVR or isolated SAVR at enrolling sites will be invited to participate in the study

Beskrivelse

Inclusion Criteria:

  • Symptomatic severe aortic stenosis (>60 years old) being scheduled for either transfemoral TAVR or isolated SAVR

Exclusion Criteria:

  • Patients who have been diagnosed with brain cancer, brain haemorrhage, brain abscess, aneurysm, cerebral palsy, encephalitis, nervous system infection, head or neurological injury, or trauma, stroke
  • Contraindications for a magnetic resonance imaging (MRI) scan (i.e. metallic implants, claustrophobia, MR-incompatible pacemakers or prosthetic heart valves)
  • Unremovable dental prostheses that are deemed to affect MRI quality
  • Severe coronary artery disease that is unrevascularized
  • Prior stroke within the last 12 months
  • Expected non-compliance concerning follow-up examinations
  • Have participated in other clinical trials

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
TAVR arm
Symptomatic severe aortic stenosis undergoing transfemoral TAVR of any devices
Andet: Brain MRI
Brain MRI will be scheduled within three days before the procedure and within seven days after the procedure, as well as at 1-year follow-up. MRI will be preferably performed using a 3.0-Tesla system unless patients are pacemaker-dependent after the procedure. In such case, a 1.5-Tesla system will be used. The MRI protocol consists of standardized conventional diffusion-weighted MRI (DW-MRI), T2-FLAIR (fluid-attenuated recovery inversion) and SWI (susceptibility-weighted imaging) parameters.
Andre navne:
  • Neurological and cognitive assessments as recommended by NeuroARC
SAVR arm
Symptomatic severe aortic stenosis undergoing isolated bioprosthetic surgical aortic valve replacement
Andet: Brain MRI
Brain MRI will be scheduled within three days before the procedure and within seven days after the procedure, as well as at 1-year follow-up. MRI will be preferably performed using a 3.0-Tesla system unless patients are pacemaker-dependent after the procedure. In such case, a 1.5-Tesla system will be used. The MRI protocol consists of standardized conventional diffusion-weighted MRI (DW-MRI), T2-FLAIR (fluid-attenuated recovery inversion) and SWI (susceptibility-weighted imaging) parameters.
Andre navne:
  • Neurological and cognitive assessments as recommended by NeuroARC

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
The incidence of new brain microbleeds detected on MRI
Tidsramme: Post-procedurally (up to 7 days) and 6 months
Microbleeds (including the number and size) on SWI after TAVR or SAVR during the index hospitalization and their evolution at the follow-up
Post-procedurally (up to 7 days) and 6 months
The incidence of new brain embolisms detected on MRI
Tidsramme: Post-procedurally (up to 7 days) and 6 months
Ischemic infarcts (including the number and size) on DW-MRI after TAVR or SAVR during the index hospitalization and their evolution at the follow-up
Post-procedurally (up to 7 days) and 6 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Changes in the neurological and cognitive status of the patients (see description for specific assessments)
Tidsramme: Post-procedurally (up to 7 days), 6 months and 1 year
NIH Stroke Scale (NIHSS) and Montreal Cognitive Assessment (MoCA, cognitive impairment = score <23/30) for overall cognitive status, and tests for five individual cognitive domains (Attention: Digit Symbol-Coding test [DSST]; Memory: Hopkins Verbal Learning Test-Revised [HVLT-R], Brief Visual Memory Test-Revised [BVMT-R]; Executive Function: Stroop Color-Word Association Test [SCWT], Category and Verbal Fluency [both semantic and phonemic]; Visuospatial Function: BVMT-R). The change of score in each assessment will be calculated.
Post-procedurally (up to 7 days), 6 months and 1 year

Andre resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Perfusion changes on transcranial doppler during TAVR or SAVR (if obtained)
Tidsramme: Intra-procedurally
Baseline perfusion will be obtained before femoral puncture in TAVR and the start of cardiopulmonary bypass in SAVR, until completion of eventual postimplantation maneuvers in TAVR and the stop of cardiopulmonary bypass in SAVR
Intra-procedurally

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

West China Hospital

Samarbejdspartnere

Rigshospitalet, Denmark
St Thomas' Hospital, London

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Forventet)

1. januar 2022

Primær færdiggørelse (Forventet)

1. januar 2023

Studieafslutning (Forventet)

1. januar 2024

Datoer for studieregistrering

Først indsendt

8. september 2021

Først indsendt, der opfyldte QC-kriterier

22. september 2021

Først opslået (Faktiske)

4. oktober 2021

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

13. januar 2022

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

27. december 2021

Sidst verificeret

1. december 2021

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 2021V1

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