Evaluation of the Systemic Microcirculation as a Surrogate for Coronary Microcirculation in Women With ANOCA (NOCAWT)
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.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
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.
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Eduardo Tibirica, MD, PhD
- Numéro de téléphone: +55-21-99914-6075
- E-mail: etibi@uol.com.br
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
Patients from a terciary cardiology hospital.
La description
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)
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Modèles d'observation: COHORT
- Perspectives temporelles: PROSPECTIVE
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
|
ANOCA
Symptomatic Group (ANOCA): n = 40 patients with stable angina and non-obstructive coronary arteries. |
Investigation of Systemic Endothelial Microvascular Function
Autres noms:
|
|
CONTROL
Control Group: n = 20 age-matched women without chest pain and without CAD. |
Investigation of Systemic Endothelial Microvascular Function
Autres noms:
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Evaluation of endothelium-dependent skin microvascular reactivity.
Délai: 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.
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Evaluation of endothelium-independent skin microvascular reactivity.
Délai: 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.
Délai: 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.
Délai: 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.
|
Collaborateurs et enquêteurs
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- NOCoronaryArtery Women Testing
Plan pour les données individuelles des participants (IPD)
Prévoyez-vous de partager les données individuelles des participants (DPI) ?
Informations sur les médicaments et les dispositifs, documents d'étude
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