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Cohort Study of Postoperative Cognitive Dysfunction After Off-Pump Coronary Artery Bypass Grafting (OPCAB-POCD)

9 juin 2026 mis à jour par: Beijing Anzhen Hospital

Risk of Postoperative Cognitive Dysfunction After Off-Pump Coronary Artery Bypass Grafting: A Prospective Cohort Study

This prospective cohort study aims to investigate postoperative cognitive dysfunction in patients undergoing off-pump coronary artery bypass grafting. Eligible patients will be enrolled before surgery and followed after surgery. Cognitive function will be assessed using the Montreal Cognitive Assessment before surgery and at predefined postoperative time points. Perioperative clinical information, including preoperative assessment data, intraoperative monitoring parameters, and postoperative clinical data, will be collected. The study will evaluate the occurrence of postoperative cognitive dysfunction and explore its association with perioperative factors.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Description détaillée

This is a prospective observational cohort study of patients undergoing off-pump coronary artery bypass grafting. The study aims to investigate postoperative cognitive dysfunction and its association with perioperative clinical factors. Eligible patients will be enrolled before surgery and followed after surgery according to the study protocol.

Baseline information will be collected before surgery, including demographic characteristics, medical history, comorbidities, laboratory test results, and preoperative cognitive assessment. Intraoperative and postoperative data will also be collected, including anesthesia-related variables, surgical information, hemodynamic and monitoring parameters, postoperative clinical status, and relevant complications.

Cognitive function will be assessed before surgery and at predefined postoperative time points using standardized cognitive assessment tools, such as the Montreal Cognitive Assessment. Postoperative cognitive dysfunction will be determined according to the predefined criteria based on changes in cognitive assessment results from baseline to postoperative follow-up.

The study will describe the incidence of postoperative cognitive dysfunction after off-pump coronary artery bypass grafting and evaluate the association between perioperative factors and postoperative cognitive outcomes. The results may help improve understanding of postoperative cognitive dysfunction in this surgical population and provide evidence for perioperative risk assessment and clinical management.

Type d'étude

Observationnel

Inscription (Estimé)

600

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

  • Nom: Wenjun Liu, PhD
  • Numéro de téléphone: +86 13811258408
  • E-mail: lwjchina@163.com

Sauvegarde des contacts de l'étude

Lieux d'étude

  • Chine
    • Beijing Municipality
      • Beijing, Beijing Municipality, Chine, 100029
        • Beijing Anzhen Hospital, Capital Medical University
        • Contact:
          • Wenjun Liu, PhD
          • Numéro de téléphone: +86 13811258408
          • E-mail: lwjchina@163.com

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Non

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

Adult patients scheduled to undergo elective off-pump coronary artery bypass grafting at Beijing Anzhen Hospital, Capital Medical University, will be prospectively enrolled. Eligible patients must be able to complete preoperative cognitive assessments and provide informed consent. Patients will be followed after surgery to evaluate postoperative cognitive dysfunction.

La description

Inclusion Criteria:

  • Age 18 years or older
  • Scheduled to undergo elective off-pump coronary artery bypass grafting
  • American Society of Anesthesiologists physical status classification I to IV
  • Able to complete preoperative cognitive assessments, including the Mini-Mental State Examination and the Montreal Cognitive Assessment
  • Written informed consent provided by the patient or family member

Exclusion Criteria:

  • Emergency surgery
  • Pre-existing diagnosed cognitive impairment or history of psychiatric disease
  • Preoperative cognitive impairment
  • Severe neurological disease, such as sequelae of stroke, that may interfere with cognitive assessment
  • Severe visual or hearing impairment that prevents completion of cognitive assessment
  • Inability to understand Chinese or presence of language communication barriers

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

Cohortes et interventions

Groupe / Cohorte
Intervention / Traitement
Off-Pump Coronary Artery Bypass Grafting Cohort
Patients undergoing off-pump coronary artery bypass grafting who will receive preoperative cognitive assessment and postoperative follow-up for postoperative cognitive dysfunction. Perioperative clinical information, including preoperative assessment data, intraoperative monitoring parameters, and postoperative clinical data, will be collected.
Procédure: Off-Pump Coronary Artery Bypass Grafting
Off-pump coronary artery bypass grafting is performed as part of routine clinical care for patients with coronary artery disease. The study protocol does not assign participants to this procedure or to any additional intervention. This observational study will collect perioperative clinical data and follow patients after surgery to assess postoperative cognitive dysfunction.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Incidence of Postoperative Cognitive Dysfunction
Délai: Postoperative Day 7, or 1 Day Before Hospital Discharge if Discharged Before Postoperative Day 7
Postoperative cognitive dysfunction will be evaluated by comparing postoperative Montreal Cognitive Assessment scores with preoperative baseline scores. Preoperative cognitive function will be assessed using the Montreal Cognitive Assessment 1 day after hospital admission. Postoperative cognitive function will be assessed using the Montreal Cognitive Assessment on postoperative day 7 or, if the patient is discharged before postoperative day 7, 1 day before hospital discharge. Postoperative cognitive dysfunction is defined as a decline in the postoperative Montreal Cognitive Assessment score of at least 1 standard deviation compared with the preoperative baseline score.
Postoperative Day 7, or 1 Day Before Hospital Discharge if Discharged Before Postoperative Day 7

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Change in Montreal Cognitive Assessment Score
Délai: Postoperative Day 7, or 1 Day Before Hospital Discharge if Discharged Before Postoperative Day 7
The change in Montreal Cognitive Assessment score will be calculated by comparing the postoperative score with the preoperative baseline score. Preoperative cognitive function will be assessed 1 day after hospital admission, and postoperative cognitive function will be assessed on postoperative day 7 or, if the patient is discharged before postoperative day 7, 1 day before hospital discharge.
Postoperative Day 7, or 1 Day Before Hospital Discharge if Discharged Before Postoperative Day 7
Length of Intensive Care Unit Stay
Délai: through ICU discharge, an average of 3 days
The length of intensive care unit stay will be recorded as the number of days from admission to the intensive care unit after surgery to discharge from the intensive care unit.
through ICU discharge, an average of 3 days
Length of Postoperative Hospital Stay
Délai: through hospital discharge, an average of 7 days
The length of postoperative hospital stay will be recorded as the number of days from the date of surgery to the date of hospital discharge.
through hospital discharge, an average of 7 days
Incidence of Postoperative Complications
Délai: through hospital discharge, an average of 7 days
Postoperative complications during hospitalization will be recorded, including cardiovascular, respiratory, neurological, renal, infectious, thromboembolic, and wound-related complications.
through hospital discharge, an average of 7 days
Duration of Postoperative Mechanical Ventilation
Délai: through ICU stay, an average of 3 days
The duration of postoperative mechanical ventilation will be recorded as the time from postoperative intensive care unit admission to successful discontinuation of mechanical ventilation.
through ICU stay, an average of 3 days
Incidence of Postoperative Nausea and Vomiting
Délai: through hospital discharge, an average of 7 days
Postoperative nausea and vomiting during the postoperative hospitalization period will be recorded based on medical records.
through hospital discharge, an average of 7 days
Incidence of In-Hospital Mortality
Délai: through hospital discharge, an average of 7 days
In-hospital mortality will be recorded as death from any cause during the postoperative hospitalization period.
through hospital discharge, an average of 7 days

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Beijing Anzhen Hospital

Les enquêteurs

  • Chercheur principal: Wenjun Liu, PhD, Beijing Anzhen Hospital

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

24 mai 2026

Achèvement primaire (Estimé)

24 novembre 2026

Achèvement de l'étude (Estimé)

15 décembre 2026

Dates d'inscription aux études

Première soumission

24 mai 2026

Première soumission répondant aux critères de contrôle qualité

9 juin 2026

Première publication (Réel)

11 juin 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

11 juin 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

9 juin 2026

Dernière vérification

1 mai 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • POCD-MOCA-2026-001
  • L252086 (Autre subvention/numéro de financement: Beijing Natural Science Foundation)
  • KS2025225 (Autre identifiant: Ethics Committee of Beijing Anzhen Hospital, Capital Medical University)

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Description du régime IPD

Individual participant data will not be shared due to privacy, ethical, and institutional data protection considerations.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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