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Optical Coherence Tomography Angiography Evaluation of Ocular Changes in Patients With Carotid Artery Stenosis

23. september 2020 opdateret af: First Affiliated Hospital of Harbin Medical University
This study aims to evaluate ocular changes in patients with carotid artery stenosis by optical coherence tomography angiography before and after carotid artery revascularization procedure.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

A growing body of research indicates that abnormal ocular microvascular features may serve as a novel biomarker reflecting the severity of underlying cardiovascular, neurodegenerative, and microvascular disease. Since blood flow to the retina is predominantly supplied by the internal carotid artery (ICA), we hypothesized that ocular microvasculature and structure changes may reflect the disease status or therapeutic effects in patients with carotid artery stenosis.

Optical coherence tomography angiography (OCTA) is a novel, non-invasive imaging modality that can be a reliable tool for the qualitative and quantitative assessments of ocular vessels during various ocular pathological or physiological changes. Recent studies have also demonstrated the ability of OCTA to quantify retinal microvascular changes in monitoring cardiovascular risk.

This study aims to evaluate ocular changes in patients with carotid artery stenosis by optical coherence tomography angiography before and after carotid artery revascularization procedure.In this study, the patients with carotid artery stenosis and control group will receive a series of cerebral and ocular examinations including the most important cerebral CT perfusion (CTP) and OCTA. After that, the cerebral and ocular data between the two groups will be compared. Also, the preoperative and postoperative data acquired will be compared.

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

129

Kontakter og lokationer

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

Studiesteder

  • Kina
    • Heilongjiang
      • Harbin, Heilongjiang, Kina
        • The First Affiliated Hospital of Harbin Medical University

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

18 år til 100 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Participants with carotid artery stenosis undergoing cerebral and eye examination and in routine clinical practice will be included

Beskrivelse

Inclusion Criteria:

  • Clinical diagnosis of carotid artery stenosis
  • Age-gender-race-matched controls

Exclusion Criteria:

  • age <18 years
  • intraocular pressure (IOP) >21 mmHg
  • VA >logMAR 1.0
  • spherical equivalent (SE) between >1.00 or < -6.00 D
  • other serious eye diseases which may affect OCTA results including diabetic retinopathy, hypertensive retinopathy, retinal vascular occlusion, age-related macular degeneration, and uveitis
  • major intraocular surgery performed in the past 6 months or a history of laser photocoagulation or intravitreal injection
  • glaucoma or first-degree relatives with a history of glaucoma; and
  • any disease that might cause poor scan quality (image quality <6).

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
Carotid artery stenosis
Patients with carotid artery stenosis. Procedure: Carotid artery revascularization procedure
Procedure: Carotid artery revascularization procedure
The patients with carotid artery stenosis will be examined before and after finishing the carotid artery revascularization procedure.
Enhed: Optical coherence tomography angiography
Examination will be performed using optical coherence tomography angiography. This device allows quantitative analysis, since it provides numerical data about flow area and flow density maps.
Control
Patients without carotid artery stenosis
Enhed: Optical coherence tomography angiography
Examination will be performed using optical coherence tomography angiography. This device allows quantitative analysis, since it provides numerical data about flow area and flow density maps.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Radical Peripapillary Capillaries Vessel Density
Tidsramme: Difference of vessel density in each group at baseline
Radical peripapillary capillaries vessel density of Optical Coherence Tomography Angiography（OCTA）
Difference of vessel density in each group at baseline
Superficial Vascular Complexes Vessel Density
Tidsramme: Difference of vessel density in each group at baseline
superficial vascular complexes vessel density of Optical Coherence Tomography Angiography
Difference of vessel density in each group at baseline
Deep Vascular Complexes Vessel Density
Tidsramme: Difference of vessel density in each group at baseline
deep vascular complexes vessel density of Optical Coherence Tomography Angiography
Difference of vessel density in each group at baseline
Choriocapillaris Vessel Density
Tidsramme: Difference of vessel density in each group at baseline
choriocapillaris vessel density of Optical Coherence Tomography Angiography
Difference of vessel density in each group at baseline

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change of Difference of Mean Transit Time(dMTT)
Tidsramme: baseline and 4 days after carotid artery procedure

Change of dMTT is the dMTT value at 4 days after carotid artery procedure minus the value at baseline.

dMTT is that the value of the lesion side minus value of contralateral side. Mean transit time (MTT) corresponds to the average time, in seconds, that red blood cells spend within a determinate volume of capillary circulation.
baseline and 4 days after carotid artery procedure
Change of the Ratio of Cerebral Blood Flow(rCBF)
Tidsramme: baseline and 4 days after carotid artery procedure

Change of rCBF is the rCBF value at 4 days after carotid artery procedure minus the value at baseline.

rCBF is that the CBF value of the lesion side divided by the value of contralateral side.

CBF refers to the flow of blood through a certain cross-sectional area of cerebrovascular per unit time.
baseline and 4 days after carotid artery procedure
Changes of Retinal Nerve Fiber Layer
Tidsramme: baseline and 4 days after carotid artery procedure
changes of retinal nerve fiber layer of Optical Coherence Tomography Angiography
baseline and 4 days after carotid artery procedure
Changes of Deep Vascular Complexes Vessel Density
Tidsramme: baseline and 4 days after carotid artery procedure
changes of deep vascular complexes vessel density of Optical Coherence Tomography Angiography
baseline and 4 days after carotid artery procedure
Changes of Radical Peripapillary Capillaries Vessel Density
Tidsramme: baseline and 4 days after carotid artery procedure
changes of radical peripapillary capillaries vessel density of Optical Coherence Tomography Angiography
baseline and 4 days after carotid artery procedure
Changes of Superficial Vascular Complexes Vessel Density
Tidsramme: baseline and 4 days after carotid artery procedure
changes of superficial vascular complexes vessel density of Optical Coherence Tomography Angiography
baseline and 4 days after carotid artery procedure

Samarbejdspartnere og efterforskere

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

Sponsor

First Affiliated Hospital of Harbin Medical University

Efterforskere

  • Ledende efterforsker: Hong Zhang, First Affiliated Hospital of Harbin Medical University
  • Ledende efterforsker: Huaizhang Shi, First Affiliated Hospital of Harbin Medical University

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

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 (Faktiske)

2. april 2020

Primær færdiggørelse (Faktiske)

20. juni 2020

Studieafslutning (Faktiske)

2. juli 2020

Datoer for studieregistrering

Først indsendt

24. marts 2020

Først indsendt, der opfyldte QC-kriterier

26. marts 2020

Først opslået (Faktiske)

30. marts 2020

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

19. oktober 2020

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

23. september 2020

Sidst verificeret

1. april 2020

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • HZHZS1

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

UBESLUTET

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ja

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