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Postoperative Delirium: Brain Vulnerability and Recovery

23 de mayo de 2020 actualizado por: 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.

Descripción general del estudio

Estado

Terminado

Condiciones

Intervención / Tratamiento

Descripción detallada

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.

Tipo de estudio

Intervencionista

Inscripción (Actual)

Fase

No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

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

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

60 años y mayores (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

Géneros elegibles para el estudio

Todos

Descripción

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.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

Propósito principal: Diagnóstico
Asignación: No aleatorizado
Modelo Intervencionista: Asignación paralela
Enmascaramiento: Ninguno (etiqueta abierta)

Número de brazos

Armas e Intervenciones

Grupo de participantes/brazo	Intervención / Tratamiento
Otro: 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.	Dispositivo: EEG Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Otros nombres: brain monitoring in delirious postoperative patients Dispositivo: fcDOT Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Otros nombres: brain monitoring in delirious postoperative patients Dispositivo: fcMRI Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Otros nombres: brain monitoring in delirious postoperative patients
Otro: no delirium Patients in the cardiothoracic ICU not diagnosed with postoperative delirium. Subjects will be monitored in the same way as the delirium arm	Dispositivo: EEG Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Otros nombres: brain monitoring in delirious postoperative patients Dispositivo: fcDOT Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Otros nombres: brain monitoring in delirious postoperative patients Dispositivo: fcMRI Brain activity will be recorded to evaluate differences in brain activity between patients with a delirium diagnosis and non-delirious control patients. Otros nombres: brain monitoring in delirious postoperative patients

Grupo de participantes/brazo

Intervención / Tratamiento

Otro: 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.

Dispositivo: EEG