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

9 juni 2026 bijgewerkt door: 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.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

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.

Studietype

Observationeel

Inschrijving (Geschat)

600

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

  • Naam: Wenjun Liu, PhD
  • Telefoonnummer: +86 13811258408
  • E-mail: lwjchina@163.com

Studie Contact Back-up

Studie Locaties

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100029
        • Beijing Anzhen Hospital, Capital Medical University
        • Contact:

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Bemonsteringsmethode

Niet-waarschijnlijkheidssteekproef

Studie Bevolking

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.

Beschrijving

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

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

Cohorten en interventies

Groep / Cohort
Interventie / Behandeling
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.
Procedure: 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.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Incidence of Postoperative Cognitive Dysfunction
Tijdsspanne: 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

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in Montreal Cognitive Assessment Score
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Beijing Anzhen Hospital

Onderzoekers

  • Hoofdonderzoeker: Wenjun Liu, PhD, Beijing Anzhen Hospital

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

24 mei 2026

Primaire voltooiing (Geschat)

24 november 2026

Studie voltooiing (Geschat)

15 december 2026

Studieregistratiedata

Eerst ingediend

24 mei 2026

Eerst ingediend dat voldeed aan de QC-criteria

9 juni 2026

Eerst geplaatst (Werkelijk)

11 juni 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

11 juni 2026

Laatste update ingediend die voldeed aan QC-criteria

9 juni 2026

Laatst geverifieerd

1 mei 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • POCD-MOCA-2026-001
  • L252086 (Ander subsidie-/financieringsnummer: Beijing Natural Science Foundation)
  • KS2025225 (Andere identificatie: Ethics Committee of Beijing Anzhen Hospital, Capital Medical University)

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Beschrijving IPD-plan

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

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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