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

23. september 2020 oppdatert av: 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.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert 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.

Studietype

Observasjonsmessig

Registrering (Faktiske)

129

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

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

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år til 100 år (Voksen, Eldre voksen)

Tar imot friske frivillige

Ja

Kjønn som er kvalifisert for studier

Alle

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Intervensjon / Behandling
Carotid artery stenosis
Patients with carotid artery stenosis. Procedure: Carotid artery revascularization procedure
Fremgangsmåte: Carotid artery revascularization procedure
The patients with carotid artery stenosis will be examined before and after finishing the carotid artery revascularization procedure.
Enhet: 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
Enhet: 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.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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
Tiltaksbeskrivelse
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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

First Affiliated Hospital of Harbin Medical University

Etterforskere

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

Publikasjoner og nyttige lenker

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Generelle publikasjoner

Studierekorddatoer

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Studer hoveddatoer

Studiestart (Faktiske)

2. april 2020

Primær fullføring (Faktiske)

20. juni 2020

Studiet fullført (Faktiske)

2. juli 2020

Datoer for studieregistrering

Først innsendt

24. mars 2020

Først innsendt som oppfylte QC-kriteriene

26. mars 2020

Først lagt ut (Faktiske)

30. mars 2020

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

19. oktober 2020

Siste oppdatering sendt inn som oppfylte QC-kriteriene

23. september 2020

Sist bekreftet

1. april 2020

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • HZHZS1

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Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Ja

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