Evaluation of Blood Biomarkers as an Indicator of Delayed Neurocognitive Recovery

NCT ID: NCT04679259

Last Updated: 2026-01-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

82 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-01-06

Study Completion Date

2025-10-29

Brief Summary

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Delayed neurocognitive recovery is defined as a cognitive decline arising after surgery. In the present study, the authors evaluate the level of D-Amino Acid Oxidase, D-serine and Serine racemase in blood as an indicator of delayed neurocognitive recovery after cardiac surgery.

Detailed Description

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Conditions

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Postoperative Cognitive Dysfunction

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Cardiac surgical patients

Group Type EXPERIMENTAL

Blood sampling for assessment of the level of D-Amino Acid Oxidase, D-serine and Serine in blood

Intervention Type DIAGNOSTIC_TEST

Blood sampling is done before surgery and at 1, 2, and 7 day after surgery. The level of D-Amino Acid Oxidase, D-serine and Serine in blood are assessed.

Neurocognitive test

Intervention Type DIAGNOSTIC_TEST

Neurocognitive test is performed before surgery and at 7 day after surgery

Assessment of delirium

Intervention Type DIAGNOSTIC_TEST

Postoperative delirium is assessed daily during 7 days after surgery.

Interventions

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Blood sampling for assessment of the level of D-Amino Acid Oxidase, D-serine and Serine in blood

Blood sampling is done before surgery and at 1, 2, and 7 day after surgery. The level of D-Amino Acid Oxidase, D-serine and Serine in blood are assessed.

Intervention Type DIAGNOSTIC_TEST

Neurocognitive test

Neurocognitive test is performed before surgery and at 7 day after surgery

Intervention Type DIAGNOSTIC_TEST

Assessment of delirium

Postoperative delirium is assessed daily during 7 days after surgery.

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* Patients scheduled for elective cardiac surgery

Exclusion Criteria

* MMSE \<24
* History of psychological or neurological diseases
* Illiteracy
* Preoperative delirium
* Vision and hearing impairment
Minimum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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SMG-SNU Boramae Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Jin-Young Hwang

Associate professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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SMG-SNU Boramae Medical Center

Seoul, Select State/Province, South Korea

Site Status

Countries

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South Korea

Other Identifiers

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30-2020

Identifier Type: -

Identifier Source: org_study_id

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