- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07794436
Association Between Changes in Aortic Valve Area and Pulmonary Congestion After Transcatheter Aortic Valve Implantation
Association Between Changes in Aortic Valve Area and Pulmonary Congestion in Patients Undergoing Transcatheter Aortic Valve Implantation
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Patients with severe symptomatic aortic stenosis scheduled for elective transfemoral TAVI will be prospectively enrolled in this single-center observational cohort study. A total of 52 patients are planned to be included.
Pulmonary congestion will be assessed using standardized lung ultrasound examinations performed at predefined time points during the peri-procedural period. Lung ultrasound assessment will primarily quantify B-lines and will also document relevant findings such as pleural effusion and consolidation. Assessments will be performed before TAVI and repeated after the procedure to characterize temporal changes in pulmonary congestion.
Aortic valve hemodynamics, including aortic valve area, will be assessed by transthoracic echocardiography. The principal analysis will evaluate the relationship between the change in aortic valve area after TAVI and the corresponding change in lung ultrasound findings. In particular, the association between the change in aortic valve area and the change in lung ultrasound findings at 24 hours will be evaluated.
By integrating echocardiographic assessment of valve hemodynamics with serial lung ultrasound, the study aims to characterize the relationship between hemodynamic improvement following TAVI and early changes in pulmonary congestion.
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Metin İlteray Kıkılı, MD
- Numéro de téléphone: +905439782131
- E-mail: metin.kikili@iuc.edu.tr
Lieux d'étude
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Istanbul
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Istanbul, Istanbul, Turquie (Türkiye), 34098
- Recrutement
- Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine
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Contact:
- Metin İlteray Kıkılı, MD
- Numéro de téléphone: +905439782131
- E-mail: metin.kikili@iuc.edu.tr
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Age ≥18 years
- Diagnosis of severe symptomatic aortic stenosis
- Scheduled for elective transfemoral transcatheter aortic valve implantation (TAVI)
- Availability of preprocedural transthoracic echocardiography
- Feasibility of lung ultrasound examination
- Provision of written informed consent
Exclusion Criteria:
- Active pneumonia
- Interstitial lung disease or pulmonary fibrosis
- Massive pleural effusion
- Acute decompensated heart failure
- Severe exacerbation of chronic obstructive pulmonary disease (COPD)
- Conditions precluding adequate thoracic ultrasound examination
- Severe mitral stenosis
- Clinically significant severe mitral regurgitation
- Development of a major complication during the procedure
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
|
TAVI Cohort
Patients with severe symptomatic aortic stenosis undergoing elective transfemoral transcatheter aortic valve implantation (TAVI) as part of routine clinical care.
Lung ultrasound and echocardiographic assessments will be performed at predefined time points to evaluate changes in pulmonary congestion and aortic valve hemodynamics.
|
Transfemoral transcatheter aortic valve implantation (TAVI) performed as part of routine clinical care in patients with severe symptomatic aortic stenosis.
The decision to perform TAVI and procedural management are independent of study participation.
No modification of the TAVI procedure is made for research purposes.
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Correlation Between Change in Aortic Valve Area and Change in Total Lung Ultrasound Score After TAVI
Délai: From preprocedural baseline to 24 hours after TAVI
|
The primary outcome is the correlation between the change in aortic valve area (AVA), measured by transthoracic echocardiography and expressed in cm², and the change in total lung ultrasound (LUS) score after TAVI.
Lung ultrasound will be performed at three time points: immediately before anesthesia (T1), immediately after TAVI (T2), and 24 hours after the procedure (T3).
Both hemithoraces will be examined in 12 thoracic zones.
Each zone will be scored from 0 to 3 according to the degree of loss of aeration: 0 = normal aeration, characterized by A-lines or fewer than 2 B-lines with lung sliding; 1 = mild alveolar-interstitial pattern, characterized by 3 or more well-spaced B-lines with lung sliding; 2 = severe alveolar-interstitial pattern, characterized by multiple crowded and coalescent B-lines occupying >50% of the scanned intercostal space with lung sliding; and 3 = severe loss of aeration, characterized by a tissue-like pattern or consolidation.
The scores from all 12 zones will
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From preprocedural baseline to 24 hours after TAVI
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Change in B-Line Count After TAVI
Délai: From preprocedural baseline to 24 hours after TAVI
|
Change in the total number of B-lines assessed by lung ultrasound from the preprocedural baseline to 24 hours after transcatheter aortic valve implantation (TAVI).
B-lines will be assessed in predefined thoracic zones, and the change in B-line count following TAVI will be evaluated as a marker of change in pulmonary congestion.
|
From preprocedural baseline to 24 hours after TAVI
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Metin İlteray Kıkılı, MD, Istanbul University - Cerrahpasa
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
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
Mots clés
Termes MeSH pertinents supplémentaires
- Maladie de la valve aortique
- Maladies cardiovasculaires
- Maladies cardiaques
- Maladies des valves cardiaques
- Obstruction de la sortie ventriculaire
- Sténose valvulaire aortique
- Procédures chirurgicales, opératoires
- Procédures chirurgicales cardiovasculaires
- Procédures chirurgicales cardiaques
- Procédures chirurgicales thoraciques
- Implantation de prothèse
- Implantation de prothèse de valve cardiaque
- Remplacement de la valve aortique transcathéter
Autres numéros d'identification d'étude
- Ay099DWe
Plan pour les données individuelles des participants (IPD)
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Informations sur les médicaments et les dispositifs, documents d'étude
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