Needle type and optic nerve sheath in spinal anesthesia
Part of Brain & nervous system, Injuries & trauma clinical trials.
This trial compares two types of needles used for spinal anesthesia to see if one type causes less pressure change around the optic nerve. If you are having lower leg or knee surgery with a tourniquet and are generally healthy, this study may be for you.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are scheduled for elective lower extremity orthopedic surgery (like knee or ankle) using a tourniquet.
- You are healthy or have only mild medical conditions (ASA class I or II).
- You will receive spinal anesthesia for your surgery.
- You do not have eye problems like glaucoma or prior eye surgery.
- You do not have asthma, COPD, or heart disease with reduced lung function.
- You do not have a bleeding disorder or infection at the needle site.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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