Comparing Spinal Anesthesia With 1% Chloroprocaine Versus 1% Mepivacaine in Patients Undergoing O… (NCT07239999) | Clinical Trial Compass
Not Yet RecruitingPhase 4
Comparing Spinal Anesthesia With 1% Chloroprocaine Versus 1% Mepivacaine in Patients Undergoing Outpatient Primary Total Knee Arthroplasty
170 participantsStarted 2026-03-31
Plain-language summary
This study or clinical trial looking to compare 2 types of freezing medications injected into the spinal fluid at the lower back between the vertebrae in patients going to have total knee replacement surgery to check for early legs movement, early discharge from recovery room, walking and hospital discharge. This could save hospital cost of such procedures.
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:
* ASA I-III
* Elective outpatient TKA
* BMI less than 40
* Ability to provide surgical consent
Exclusion Criteria:
* Patient refusal
* Opioid tolerant
* Any contraindications to spinal anesthesia
* Chronic opioid use 3months or more
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
Time to complete recovery of motor block
Timeframe: Time from the intrathecal drug injection to the first documented instance of complete motor block recovery Bromage 0. Within approximately 2 hours for the Chloroprocaine group and 4 hours for the Mepivacaine group.
2
Time to complete motor block recovery of lower limbs after spinal anesthesia
Timeframe: From the time of intrathecal drug injection to PACU discharge. Within approximately 3 hours for the Chloroprocaine group and 5 hours for the Mepivacaine group.