TerminatedNot Applicable

Cerebral Blood Flow Evaluation With Trancranial Doppler After Interscalene Nerve Block

Stopped: Study not properly designed for outcome measure

United States10 participantsStarted 2021-03-04

Plain-language summary

The purpose of this study is to assess cerebral blood flow velocity (CBFV) following regional anesthesia for shoulder surgery. The results of this study will help to further understand the physiologic effect of the interscalene nerve block on cerebral blood flow.

Who can participate

Age range

18 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: * Patients undergoing orthopedic surgery and with an indication for preoperative insertion of interscalene nerve block * 18-85 years old * Give consent to participate in study Exclusion Criteria: * Cannot give consent * Patients who are clinically unstable or require urgent/emergent intervention

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

Cerebral Blood Flow Velocity before and after interscalene nerve block

Timeframe: baseline, after 30 minutes

Trial details

NCT IDNCT04642612

SponsorStanford University

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2021-05-19

View on ClinicalTrials.gov More Regional Anesthesia trials

Who can participate

Age range

18 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.