Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Evaluation of the Systemic Microcirculation as a Surrogate for Coronary Microcirculation in Women With ANOCA (NOCAWT)

2. maj 2026 opdateret af: Eduardo Tibirica, MD, PhD, National Institute of Cardiology, Laranjeiras, Brazil

Evaluation of the Systemic Microcirculation as a Surrogate for Coronary Microcirculation in Women With ANOCA: Insights Into Pathophysiology and Diagnosis Using Noninvasive, Innovative Techniques (NOCAWT)

The primary objective of this project is to validate a multi-modal systemic microvascular phenotyping platform-combining Laser Speckle Contrast Imaging (LSCI) and Sublingual Handheld Videomicroscopy (IDF imaging)-as a non-invasive surrogate for coronary microvascular function in women with ANOCA (Angina with Non-Obstructive Coronary Arteries). We aim to demonstrate that systemic microvascular signatures (microvascular reactivity and density) can predict coronary endotypes with high accuracy, potentially reducing the need for invasive diagnostics.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

The study will involve women aged 18 to 65 years, with stable anginal chest pain and no coronary artery disease (ANOCA) (absence of coronary plaque in coronary angiography or computed tomography coronary angiography - CCTA), recruited at the National Institute of Cardiology (INC). The upper age limit was established to limit the influence of vascular senescence on the results.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

60

Kontakter og lokationer

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

Studiekontakt

  • Navn: Eduardo Tibirica, MD, PhD
  • Telefonnummer: +55-21-99914-6075
  • E-mail: etibi@uol.com.br

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

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

N/A

Prøveudtagningsmetode

Sandsynlighedsprøve

Studiebefolkning

Patients from a terciary cardiology hospital.

Beskrivelse

Inclusion Criteria:

  • Age 18-65 years
  • Anginal chest pain

Exclusion Criteria:

  • Malignant neoplasms
  • Autoimmune diseases
  • Acute systemic diseases
  • Pregnancy or lactation
  • Iodine allergy
  • CAD on invasive coronary angiography or coronary computed tomography angiography (CCTA)

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
ANOCA
Symptomatic Group (ANOCA): n = 40 patients with stable angina and non-obstructive coronary arteries.
Procedure: Investigation of Systemic Endothelial Microvascular Function
Investigation of Systemic Endothelial Microvascular Function
Andre navne:
  • Myocardial Perfusion Imaging
  • Sublingual videomicroscopy
  • Invasive coronary flow determination
  • Cutaneous Laser Speckle Contrast Imaging
CONTROL
Control Group: n = 20 age-matched women without chest pain and without CAD.
Procedure: Investigation of Systemic Endothelial Microvascular Function
Investigation of Systemic Endothelial Microvascular Function
Andre navne:
  • Myocardial Perfusion Imaging
  • Sublingual videomicroscopy
  • Invasive coronary flow determination
  • Cutaneous Laser Speckle Contrast Imaging

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Evaluation of endothelium-dependent skin microvascular reactivity.
Tidsramme: Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.
Evaluation of systemic microvascular reactivity induced by endothelium-dependent agent (acetylcholine). Microvascular reactivity will be evaluated using a non-invasive and operator -independent methodology, named laser speckle contrast imaging, coupled with skin iontophoresis of vasodilator agents. Cutaneous microvascular flow will be measured in arbitrary perfusion units, divided by mean arterial pressure, to yield cutaneous vascular conductance.
Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Evaluation of endothelium-independent skin microvascular reactivity.
Tidsramme: Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.
Evaluation of systemic microvascular reactivity induced by endothelium-independent agent (sodium nitroprusside). Microvascular reactivity will be evaluated using a non-invasive and operator -independent methodology, named laser speckle contrast imaging, coupled with skin iontophoresis of vasodilator agents. Cutaneous microvascular flow will be measured in arbitrary perfusion units, divided by mean arterial pressure, to yield cutaneous vascular conductance.
Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.
Evaluation of endothelium-dependent skin microvascular reactivity.
Tidsramme: Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.
Evaluation of systemic microvascular reactivity induced by postocclusive reactive hyperemia. Microvascular reactivity will be evaluated using a non-invasive and operator -independent methodology, named laser speckle contrast imaging. Cutaneous microvascular flow will be measured in arbitrary perfusion units, divided by mean arterial pressure, to yield cutaneous vascular conductance.
Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.
Evaluation of sublingual microcirculation.
Tidsramme: Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.
Sublingual microcirculatory density and perfusion will be assessed using a handheld camera based on incident dark-field (IDF) imaging.
Microvascular reactivity will be evaluated 20-minute rest in the supine position in a temperature-controlled room.

Samarbejdspartnere og efterforskere

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

Sponsor

National Institute of Cardiology, Laranjeiras, Brazil

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 (Anslået)

1. august 2026

Primær færdiggørelse (Anslået)

1. december 2029

Studieafslutning (Anslået)

1. december 2029

Datoer for studieregistrering

Først indsendt

22. april 2026

Først indsendt, der opfyldte QC-kriterier

22. april 2026

Først opslået (Faktiske)

30. april 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. maj 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. maj 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • NOCoronaryArtery Women Testing

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Angina, mikrovaskulær

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Uzbekistan

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner