CompletedNot Applicable

Vitamin B12 and Folate Administration on Homocysteine Concentrations After Nitrous Oxide Anesthesia

United States63 participantsStarted 2009-03

Plain-language summary

The goal of this study is to find out if giving intravenous B-vitamins before general anesthesia with nitrous oxide prevents the increase in homocysteine, a metabolite that has been linked to cardiovascular complications.

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Adult patients scheduled for elective surgery with expected duration \> 2 hours * Healthy patients undergoing moderate surgery where the use of N2O is unproblematic Exclusion Criteria: * Contraindication against N2O (pneumothorax, mechanical bowel obstruction, middle ear occlusion, laparoscopic surgery, raised intracranial pressure) * Patients requiring supplemental oxygen * Urgent or emergent surgery * Patients with vitamin B12 or folate deficiency or megaloblastic anemia * Patients with seizure disorder (epilepsy) * Allergy or hypersensitivity against IV cobalamin or folate * Patients with Leber's disease (hereditary optic nerve atrophy) * Patients taking supplemental vitamin B12 or folate

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Change in Plasma Total Homocysteine Concentration (tHcy)

Timeframe: Immediately postoperatively and on postoperative day 1

Trial details

NCT IDNCT00901394

SponsorWashington University School of Medicine

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2010-01

Results submitted2018-04-23

View on ClinicalTrials.gov More Cardiovascular Abnormalities trials

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.