Preoperative Carotid Doppler Ultrasound Parameters for Prediction of Post-Induction Hypotension i… (NCT07488182) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Preoperative Carotid Doppler Ultrasound Parameters for Prediction of Post-Induction Hypotension in Elective Non-Cardiac Surgery
Turkey (Türkiye)110 participantsStarted 2026-09
Plain-language summary
This prospective observational study aims to evaluate the predictive value of preoperative carotid Doppler ultrasound parameters, including carotid velocity-time integral (carotid VTI) and corrected carotid flow time (ccFT), for post-induction hypotension in adult patients undergoing elective non-cardiac surgery under general anesthesia. Hemodynamic instability during anesthesia induction is a common and clinically important problem associated with adverse perioperative outcomes. Carotid Doppler ultrasonography provides a rapid and non-invasive method for assessing hemodynamic status at the bedside. In this study, carotid Doppler measurements will be performed in the preoperative period and their association with post-induction hypotension will be analyzed. The results of this study may help identify patients at risk for hypotension and improve perioperative hemodynamic management.
Who can participate
Age range
18 Years – 65 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 aged 18-65 years
American Society of Anesthesiologists (ASA) physical status I-II
Scheduled for elective non-cardiac surgery under general anesthesia
Planned endotracheal intubation
Ability to provide written informed consent
Exclusion Criteria:
Refusal to participate in the study
Planned emergency surgery
Planned cardiac surgery
Presence of carotid artery stenosis greater than 50%
Moderate to severe valvular heart disease
Presence of atrial fibrillation or significant arrhythmia
Advanced heart failure
Preoperative hypotension or hemodynamic instability
Inability to obtain reliable ultrasonographic measurements
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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
Post-induction hypotension
Timeframe: From anesthesia induction until 10 minutes after tracheal intubation or until the start of surgery, whichever occurs first.