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Postoperative Delirium: Brain Vulnerability and Recovery

23. maj 2020 opdateret af: Ben Palanca, Washington University School of Medicine

In this study, we propose to use EEG and a brain imaging technique known as diffuse optical tomography (DOT) to study when people are in delirium and when they recovery. We plan to also compare brain function of patients who recovered from delirium to patients who did not have delirium using DOT and fMRI. We will also continually monitor the participant's EMR to help coordinate timing of study procedures, as well as to collect information pertaining to their surgery, recovery progress, and indicators of mental status including delirium.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Postoperative delirium - a mental state of confusion, inattention, and impaired thought - is a potentially life-threatening condition. As many as half of patients that have heart and non heart-related surgery will experience postoperative delirium. Patients diagnosed with postoperative delirium have poorer outcomes and longer hospitalizations. Unfortunately, it is an under-diagnosed condition with a variable delay in when it appears. Additionally, there are no objective tools or tests that can be before or after surgery to anticipate and identify those patients who are at risk. Electroencephalography [EEG] and functional magnetic resonance imaging [fMRI] have helped us understand the changes in the brain during delirium. These suggest that a weakening in correlated activity within a group of brain regions, known as the default mode network (DMN), may be related to delirium.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

Fase

Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

Forenede Stater
- Missouri
  - Saint Louis, Missouri, Forenede Stater, 63110
    - Barnes-Jewish Hospital/Washington University in St. Louis School of Medicine

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

60 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Common inclusion criteria:

Age ≥ 60
Surgery requiring cardiopulmonary bypass (CPB) for coronary artery bypass grafting, septal myectomy and/or heart valve repair/replacement
English speaking.

Common exclusion criteria:

Implanted pacemaker
Automatic internal cardiac defibrillator or other implant for which non-contrast magnetic resonance imaging (MRI) is contraindicated
Concomitant aortic or cerebrovascular procedure
Inability to lay flat or still for MRI
Legal blindness or severe deafness
Seizure history
Known focal brain lesion larger than 3 cm.

Delirium Case Arm:

1. Delirious as diagnosed by the Confusion Assessment Method (CAM)/ Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) at some point during postoperative day 1-5.

Postoperative Control Arm:

1. Not delirious as diagnosed by the CAM/CAM-ICU on postoperative day 1-5.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Primært formål: Diagnostisk
Tildeling: Ikke-randomiseret
Interventionel model: Parallel tildeling
Maskning: Ingen (Åben etiket)

Antal våben

Våben og indgreb

Deltagergruppe / Arm	Intervention / Behandling
Andet: delirium Patients in the cardiothoracic ICU diagnosed with postoperative delirium. Subjects will wear a diffuse optical tomography device in addition to the normal monitors. A non-contrast functional MRI will be performed.	Enhed: EEG Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Andre navne: brain monitoring in delirious postoperative patients Enhed: fcDOT Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Andre navne: brain monitoring in delirious postoperative patients Enhed: fcMRI Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Andre navne: brain monitoring in delirious postoperative patients
Andet: no delirium Patients in the cardiothoracic ICU not diagnosed with postoperative delirium. Subjects will be monitored in the same way as the delirium arm	Enhed: EEG Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Andre navne: brain monitoring in delirious postoperative patients Enhed: fcDOT Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Andre navne: brain monitoring in delirious postoperative patients Enhed: fcMRI Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Andre navne: brain monitoring in delirious postoperative patients

Deltagergruppe / Arm

Intervention / Behandling

Andet: delirium

Patients in the cardiothoracic ICU diagnosed with postoperative delirium. Subjects will wear a diffuse optical tomography device in addition to the normal monitors. A non-contrast functional MRI will be performed.

Enhed: EEG