Effects of Vasopressors on Cerebral Hemodynamics in Patients With Carotid Endarterectomy (TCD Part) (NCT05665881) | Clinical Trial Compass
CompletedNot Applicable
Effects of Vasopressors on Cerebral Hemodynamics in Patients With Carotid Endarterectomy (TCD Part)
China90 participantsStarted 2023-01-07
Plain-language summary
This study was a single-center, exploratory, randomized controlled trial. First, the effects of ephedrine, phenylephrine, or norepinephrine on cerebral blood flow hemodynamics in patients undergoing carotid endarterectomy were evaluated using TCD techniques to investigate the specific mechanisms of the three vasopressors on cerebral blood flow and oxygen metabolism in brain tissues.
Who can participate
Age range
40 Years – 80 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
. age 40-80 years.
. elective carotid endarterectomy.
. Signed informed consent
Exclusion criteria
. American Society of Anesthesiologists physical status classification (ASA) IV - VI.
. renal failure (estimated glomerular filtration rate less than 60 ml/min.m2).
. cardiac arrhythmias.
. Allergy to ephedrine, phenylephrine or norepinephrine, gadobutrol.
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
1
Changes in middle cerebral artery blood velocity
Timeframe: 10 minutes after entering the operating room; 10 minutes after intubation ;5 minutes after administration of vasopressors