Ultrasound of the Inferior Vena Cava in the Prevention of Hypotension After Induction of General … (NCT06530901) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Ultrasound of the Inferior Vena Cava in the Prevention of Hypotension After Induction of General Anesthesia
China100 participantsStarted 2024-09-01
Plain-language summary
Based on the preoperative ultrasound detection of various parametric indicators of the inferior vena cava cross-section, including the ratio of the inferior vena cava's long and short axes, cross-sectional area and circumference during two-dimensional and three-dimensional imaging, as well as the changes in respiratory variability of each parameter, we explored the predictive value of IVC ultrasound indicator parameters on hypotension after induction of general anesthesia in elderly patients undergoing elective non-cardiac surgery, screened the sensitive indicators, and calculated the cut-off values.
Who can participate
Age range
65 Years – 85 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:
* Elderly patients undergoing elective non-cardiac surgery under general anesthesia;
* Age 65-85 years old;
* Body mass index (BMI) 18-28 kg/m2;
* American society of anesthesiologists (ASA) class I-III.
Exclusion Criteria:
* Patient refusal or lack of cooperation;
* Inability to communicate properly;
* Severe sinus bradycardia, pacemaker implantation, atrioventricular block, and atrial fibrillation;
* Presence of severe hepatic and renal function abnormalities;
* Preoperative cardiac ultrasound suggesting LVEF \<50%;
* Tricuspid valve displacement \<16 mm by preoperative cardiac ultrasound;
* Chronic obstructive pulmonary disease;
* Pulmonary hypertension;
* Administration of drugs that inhibit the renin-angiotensin-aldosterone system;
* Possibility of a difficult airway.
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 the level of Mean Arterial Pressure
Timeframe: Baseline (before induction), 10 min after induction
2
Changes in the level of Systolic Blood Pressure
Timeframe: Baseline (before induction), 10 min after induction
3
Multidimensional ultrasound of the inferior vena cava