Postoperative DeliriumNCT04194411
Association of Plasma Biomarkers for Neurological Injury and Postoperative Delirium After Cardiac Surgery
An observational study of Postoperative Delirium, run by Yonsei University at 1 site in South Korea.
Trial summary
Delirium is one of the most common complications after cardiac surgeries, incidence of which is 20~70%. Causes and pathophysiology of delirium has not been elucidated yet, however, inflammatory response of the nervous system, imbalance of neurotransmitters and ischemia-reperfusion injury of brain tissue are thought to… Read more about this study
- Who is it for?
- Ages 65 years and older
- Conditions the study is for
- Postoperative Delirium
- How many people
- 152 participants
- Where
- 1 siteSouth Korea
- Study dates
- 7 Jan 2020to 8 Dec 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 65 years and older
- All sexes
- No healthy volunteers
- Older adult
Study population: Patients undergoing valvular heart surgery (>65 years old)
Who may be able to join
- 1. Patients undergoing valvular heart surgery (>65 years old)
Who cannot join
- 1. Emergency operation
- 2. Patients with drug or alcohol abuse
- 3. Patients with major depressive disorder, major neurocognitive disorder or schizophrenia
- 4. Patients with schizophrenia
- 5. Patients who are not able to communicate verbally
Trial locations and contacts
1 site in 1 country.
South Korea1 site
Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei Cardiovascular Hospital, Yonsei University College of Medicine
Seoul
About this study
Delirium is one of the most common complications after cardiac surgeries, incidence of which is 20~70%. Causes and pathophysiology of delirium has not been elucidated yet, however, inflammatory response of the nervous system, imbalance of neurotransmitters and ischemia-reperfusion injury of brain tissue are thought to play a big role.
'Neurofilament light (Nfl)' and 'Tau' are proteins that comprise neurons, which are released into blood during acute brain injury. Increased serum concentrations of these markers are acknowledged to be associated with worse clinical outcomes in patients with acute brain injury. These proteins are also closely linked to degenerative changes in the nervous system and cognitive decline in Alzheimer's disease. Therefore, the increase in blood levels of 'Nfl' and 'Tau' may be related to the development of delirium.
The aim of this study is to investigate the association between 'Nfl' and 'Tau', serum markers of damage of the nervous system, and the development of delirium after cardiac surgery.
Read the detailed description
- Assessment of cognitive function and delirium Before the day before surgery, K-MMSE (Korean version of Mini-Mental State Exam) is conducted to check the subjects' baseline cognitive function. From the postoperative day 0 to 7, CAM-ICU (Confusion Assessment Method for the Intensive Care Unit) for mechanically ventilated patients, or 3D-CAM (3-minute diagnostic assessment for delirium using the Confusion Assessment Method) for extubated patients is performed twice a day to assess whether delirium occurs. Records of the nurses are also checked.
- Measurement of the serum levels of Nfl and Tau Serum concentrations of Nfl and Tau are measured after anesthetic induction, and at postoperative 6 hours
- Conditions
- Postoperative Delirium
- Keywords
- Neurofilament light, Tau, Delirium, Valvular heart surgery
- Medical subject headings
- Emergence Delirium, Charcot-Marie-Tooth disease, Type 1F, Pick Disease of the Brain, Delirium
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Valve surgery | Patients older than 65 years and undergoing elective valvular heart surgery |
What is being measured
The primary outcome is the main question the study is designed to answer.
Postoperative delirium
From the postoperative day 0 to 7, CAM-ICU (for mechanically ventilated patients) or 3D-CAM (for extubated patients) is performed twice a day. Electronic medical records of the patients are also assessed.
Measured: Postoperative 7 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Dec 2019
- Study start7 Jan 2020
- Primary completion8 Dec 2021
- Study completion8 Dec 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Postoperative DeliriumStudies of the same condition, open and under way.
- More trials run by Yonsei UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 152 participants (actual)
Sponsor and investigators
- Lead sponsor
- Yonsei University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04194411
- Sponsor's protocol ID
- 4-2019-0925
- Status last verified
- Jan 2022
- First submitted
- 9 Dec 2019
- Last updated
- 10 Jan 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 10 Jan 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Association of Plasma Biomarkers for Neurological Injury and Postoperative Delirium After Cardiac Surgery
- ClinicalTrials.gov ID
- NCT04194411
- Acronym / sponsor ID
- 4-2019-0925
- Conditions
- Postoperative Delirium
- Keywords
- Neurofilament light, Tau, Delirium, Valvular heart surgery
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 152 participants (actual)
- Lead sponsor
- Yonsei UniversityUniversity, hospital or other
- Study start
- 7 Jan 2020 (actual)
- Primary completion
- 8 Dec 2021 (actual)
- Study completion
- 8 Dec 2021 (actual)
- First posted
- 11 Dec 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Delirium is one of the most common complications after cardiac surgeries, incidence of which is 20~70%. Causes and pathophysiology of delirium has not been elucidated yet, however, inflammatory response of the nervous system, imbalance of neurotransmitters and ischemia-reperfusion injury of brain tissue are thought to play a big role.
'Neurofilament light (Nfl)' and 'Tau' are proteins that comprise neurons, which are released into blood during acute brain injury. Increased serum concentrations of these markers are acknowledged to be associated with worse clinical outcomes in patients with acute brain injury. These proteins are also closely linked to degenerative changes in the nervous system and cognitive decline in Alzheimer's disease. Therefore, the increase in blood levels of 'Nfl' and 'Tau' may be related to the development of delirium.
The aim of this study is to investigate the association between 'Nfl' and 'Tau', serum markers of damage of the nervous system, and the development of delirium after cardiac surgery.
Detailed description
- Assessment of cognitive function and delirium Before the day before surgery, K-MMSE (Korean version of Mini-Mental State Exam) is conducted to check the subjects' baseline cognitive function. From the postoperative day 0 to 7, CAM-ICU (Confusion Assessment Method for the Intensive Care Unit) for mechanically ventilated patients, or 3D-CAM (3-minute diagnostic assessment for delirium using the Confusion Assessment Method) for extubated patients is performed twice a day to assess whether delirium occurs. Records of the nurses are also checked.
- Measurement of the serum levels of Nfl and Tau Serum concentrations of Nfl and Tau are measured after anesthetic induction, and at postoperative 6 hours
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Valve surgery | – | –Patients older than 65 years and undergoing elective valvular heart surgery |
Who may qualify
- Ages
- 65 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Older adult
- Study population
- Patients undergoing valvular heart surgery (>65 years old)
Key inclusion criteria (1 listed)
- 1. Patients undergoing valvular heart surgery (>65 years old)
Key exclusion criteria (5 listed)
- 1. Emergency operation
- 2. Patients with drug or alcohol abuse
- 3. Patients with major depressive disorder, major neurocognitive disorder or schizophrenia
- 4. Patients with schizophrenia
- 5. Patients who are not able to communicate verbally
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Postoperative delirium
Time frame: Postoperative 7 days
From the postoperative day 0 to 7, CAM-ICU (for mechanically ventilated patients) or 3D-CAM (for extubated patients) is performed twice a day. Electronic medical records of the patients are also assessed.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Jan 2022.
Related trials for Postoperative Delirium
RecruitingObservational study
The Impact of Fast-Track Anesthesia on Postoperative Neurocognitive Function in Patients Undergoing Cardiac Surgery
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Prediction and Prevention of Postoperative Mortality and Morbidity
Dementia, Postoperative Delirium (POD)
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The Danish Out-of-Hospital Cardiac Arrest Study
Out-Of-Hospital Cardiac Arrest, Post-Cardiac Arrest Syndrome
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Lactium Premedication to Prevent Emergence Agitation
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Postoperative Delirium, run by Yonsei University at 1 site in South Korea.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 10 Jan 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Postoperative delirium (time frame: Postoperative 7 days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Jan 2022; AzTrials last refreshed its copy on 8 Nov 2026.