NCT06326996 · University of California, Los Angeles
Thiamine Intervention and Coronary Artery Bypass Grafting
(B1&CABG)
What this study is about
The purpose of this study is to gain a better understanding of the association between brain changes and cognitive deficits in coronary heart disease (CHD) patients undergoing coronary artery bypass grafting (CABG) and whether a low-cost thiamine intervention can be used to reduce post-CABG cognitive issues in CHD subjects.
View original scientific description
The purpose of this study is to gain a better understanding of the association between brain changes and cognitive deficits in coronary heart disease (CHD) patients undergoing coronary artery bypass grafting (CABG) and whether a low-cost thiamine intervention can be used to reduce post-CABG cognitive issues in CHD subjects.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Patients with Coronary Heart Disease (CHD) scheduled for Bypass Grafting (CABG)
- Thiamine deficiency before CABG
- European System for Cardiac Operative Risk Evaluation II (EuroSCORE II) \>1.5%
- Off-pump surgery
Exclusion criteria
- Dementia at baseline \[Montreal Cognitive Assessment (MoCA) \<21 within 5 days before CABG\]
- Current in-take of thiamine
- Known thiamine allergy
- Uncontrolled blood glucose levels
- Unable to give consent due to illness
- History of hyperlactatemia
- Recent (within several years and/or up to the judgment of the PI/co-PIs) cerebral incidents (seizure or head trauma resulting in loss of consciousness and/or concussion)
- Diagnosed psychiatric diseases (clinical depression, schizophrenia, manic-depression)
- Patients with history of alcohol or substance abuse
- Acute or chronic infections (tuberculosis, hepatitis, or encephalopathy)
- Diagnosed neuro-degenerative diseases (Alzheimer's or Parkinson's disease)
- Chronic immunodeficiency (including HIV)
- Congenital brain deficits will also be excluded
Where
- Los Angeles, California
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Aug 1, 2025 · Source of record for eligibility and locations