- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica 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
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
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.
Tipo di studio
Iscrizione (Stimato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Deep Grewal
- Numero di telefono: 4221 416-340-4800
- Email: deep.grewal@uhn.ca
Backup dei contatti dello studio
- Nome: George Djaiani, MD FRCAFRCPS
- Numero di telefono: 6205 416-340-4800
- Email: george.djaiani@uhn.ca
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Descrizione
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.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Prevenzione
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Doppio
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Sperimentale: 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.
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Comparatore attivo: 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.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Recruitment rate
Lasso di tempo: 2 year
|
1. Recruitment rate: Percentage of eligible patients enrolled in the study (feasibility target: >10%).
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2 year
|
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Non-adherence with the protocol
Lasso di tempo: 2 year
|
Non-adherence with the protocol (percentage of patients with VRx > 0.3 where no intervention was performed; <10%)
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2 year
|
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Completeness and quality of POD assessment
Lasso di tempo: 2 year
|
Completeness and quality of POD assessment (percent of patients for whom all CAM-ICU assessments are complete and conclusive; > 90%)
|
2 year
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Overall incidence of impaired cerebral autoregulation
Lasso di tempo: 2 year
|
Overall incidence of impaired cerebral autoregulation in the intervention and control groups.
|
2 year
|
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Percentage of patients in whom attempted restoration
Lasso di tempo: 2 year
|
Percentage of patients in whom attempted restoration of VRx to autoregulation range was unsuccessful
|
2 year
|
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The number of interventions required
Lasso di tempo: 2 year
|
The number of interventions required to restore VRx to autoregulation range
|
2 year
|
Altre misure di risultato
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Tertiary Outcomes: . Frequency of POD
Lasso di tempo: 2 year
|
Frequency of postoperative delirium (POD) up to postoperative day 3 in both study groups (primary outcome for the definitive trial).
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2 year
|
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Tertiary Outcomes: A composite outcome of major end organ dysfunction
Lasso di tempo: 2 year
|
A composite outcome of major end organ dysfunction defined as major organ morbidity and mortality (MOMM) and all cause 30-day mortality.
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2 year
|
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Tertiary Outcomes: Postoperative quality of recovery
Lasso di tempo: 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
|
Collaboratori e investigatori
Investigatori
- Investigatore principale: George Djaiani, Toronto General Hospital
Studiare le date dei record
Studia le date principali
Inizio studio (Stimato)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Manifestazioni neurologiche
- Malattie del sistema nervoso
- Disordini mentali
- Complicanze postoperatorie
- Processi patologici
- Confusione
- Manifestazioni neurocomportamentali
- Disturbi neurocognitivi
- Delirio
- Condizioni patologiche, segni e sintomi
- Segni e sintomi
- Delirio di emergenza
- Tecniche e procedure diagnostiche
- Diagnosi
- Monitoraggio, fisiologico
Altri numeri di identificazione dello studio
- 25-5746
Piano per i dati dei singoli partecipanti (IPD)
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Descrizione del piano IPD
Informazioni su farmaci e dispositivi, documenti di studio
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