- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT07671404
Cerebral Autoregulation and Delirium Study (AUTO-POD)
Reducing Delirium After Cardiac Surgery: Personalized Targeted Blood Pressure Management Strategy Using Cerebral Autoregulation Monitoring: A Pilot Study
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
The primary aim of this pilot study is to evaluate the feasibility of conducting a subsequent definitive trial by assessing recruitment rates, protocol adherence, and the completeness and quality of short-term outcome data collection. The pilot study will also provide an opportunity to identify potential challenges and optimize the design of the larger trial, if necessary.
If the study hypothesis is confirmed and subsequently reproduced in larger, rigorous clinical trials, the findings could have important implications for intraoperative blood pressure management in elderly patients undergoing cardiac surgery. Specifically, this research may support a transition from the current "one-size-fits-all" blood pressure management strategy toward an individualized, real-time approach guided by cerebral autoregulation monitoring. Such a personalized strategy could potentially reduce the incidence of postoperative delirium (POD) in this high-risk population.
Conversely, premature implementation of personalized blood pressure management based solely on the currently available preliminary evidence may lead to unintended adverse consequences. Therefore, the proposed pilot study is essential to provide critical feasibility and safety data before proceeding to a larger definitive trial.
This study will be conducted as a prospective, single-centre, randomized controlled clinical trial comparing a real-time cerebral autoregulation monitoring-based blood pressure management strategy with standard care. Participants will be randomized into two groups:
Intervention Group: Blood pressure management guided by real-time cerebral autoregulation monitoring.
Control Group: Standard intraoperative blood pressure management according to current institutional practice.
Studientyp
Einschreibung (Geschätzt)
Phase
- Unzutreffend
Kontakte und Standorte
Studienkontakt
- Name: Deep Grewal
- Telefonnummer: 4221 416-340-4800
- E-Mail: deep.grewal@uhn.ca
Studieren Sie die Kontaktsicherung
- Name: George Djaiani, MD FRCAFRCPS
- Telefonnummer: 6205 416-340-4800
- E-Mail: george.djaiani@uhn.ca
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Beschreibung
Inclusion Criteria:
• Consenting patients aged ≥ 60 years undergoing elective complex cardiac surgery (coronary artery bypass grafting plus valve surgery, double-valve surgery, triple-valve surgery, redo operations, or aortic arch surgery), or patients aged ≥ 70 years undergoing isolated coronary artery bypass grafting or single-valve repair/replacement surgery.
Exclusion Criteria:
- Patients with symptomatic cerebrovascular disease.
- History of delirium.
- Major neurocognitive impairment (e.g., dementia or Mini-Mental State Examination score < 10).
- Schizophrenia.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Verhütung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Doppelt
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
|
Experimental: Intervention Group:
Participants randomized to the intervention group will receive individualized intraoperative blood pressure management guided by real-time cerebral autoregulation monitoring to protect against both hypo- and hyper-cerebral perfusion. Cerebral autoregulation will be assessed using the cerebral blood volume reactivity index (VRx), defined as the Pearson correlation coefficient between blood volume index (BVI) and mean arterial pressure (MAP). The lower and upper limits of autoregulation will be identified as the MAP values at which VRx exceeds 0.3. If VRx remains outside the autoregulatory range for more than 60 seconds, the anesthesiologist may intervene to restore MAP within the individualized autoregulatory zone. The type and sequence of interventions will be at the discretion of the attending anesthesiologist. |
bilateral Mespere NeuroOs cerebral oximeter sensors will be placed on the fronto-temporal area on the fronto-temporal area of all patients.
|
|
Aktiver Komparator: Control Group:
In the control group, the cerebral oximetry monitor will be electronically blinded, although data will be continuously recorded for subsequent analysis.
Intraoperative blood pressure management will follow current institutional standard practice at the discretion of the attending anesthesiologist.
|
bilateral Mespere NeuroOs cerebral oximeter sensors will be placed on the fronto-temporal area on the fronto-temporal area of all patients.
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Recruitment rate
Zeitfenster: 2 year
|
1. Recruitment rate: Percentage of eligible patients enrolled in the study (feasibility target: >10%).
|
2 year
|
|
Non-adherence with the protocol
Zeitfenster: 2 year
|
Non-adherence with the protocol (percentage of patients with VRx > 0.3 where no intervention was performed; <10%)
|
2 year
|
|
Completeness and quality of POD assessment
Zeitfenster: 2 year
|
Completeness and quality of POD assessment (percent of patients for whom all CAM-ICU assessments are complete and conclusive; > 90%)
|
2 year
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Overall incidence of impaired cerebral autoregulation
Zeitfenster: 2 year
|
Overall incidence of impaired cerebral autoregulation in the intervention and control groups.
|
2 year
|
|
Percentage of patients in whom attempted restoration
Zeitfenster: 2 year
|
Percentage of patients in whom attempted restoration of VRx to autoregulation range was unsuccessful
|
2 year
|
|
The number of interventions required
Zeitfenster: 2 year
|
The number of interventions required to restore VRx to autoregulation range
|
2 year
|
Andere Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Tertiary Outcomes: . Frequency of POD
Zeitfenster: 2 year
|
Frequency of postoperative delirium (POD) up to postoperative day 3 in both study groups (primary outcome for the definitive trial).
|
2 year
|
|
Tertiary Outcomes: A composite outcome of major end organ dysfunction
Zeitfenster: 2 year
|
A composite outcome of major end organ dysfunction defined as major organ morbidity and mortality (MOMM) and all cause 30-day mortality.
|
2 year
|
|
Tertiary Outcomes: Postoperative quality of recovery
Zeitfenster: 2 year
|
Postoperative quality of recovery score QoR-15 survey will be performed at baseline, and postoperative days 1 to 3 (or discharge if earlier).
|
2 year
|
Mitarbeiter und Ermittler
Ermittler
- Hauptermittler: George Djaiani, Toronto General Hospital
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Geschätzt)
Primärer Abschluss (Geschätzt)
Studienabschluss (Geschätzt)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Neurologische Manifestationen
- Erkrankungen des Nervensystems
- Psychische Störungen
- Postoperative Komplikationen
- Pathologische Prozesse
- Verwirrtheit
- Neurobehaviorale Manifestationen
- Neurokognitive Störungen
- Delirium
- Pathologische Zustände, Anzeichen und Symptome
- Anzeichen und Symptome
- Entstehung Delirium
- Diagnosetechniken und Verfahren
- Diagnose
- Überwachung, physiologisch
Andere Studien-ID-Nummern
- 25-5746
Plan für individuelle Teilnehmerdaten (IPD)
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