The purpose of this study is to determine if the addition of intrathecal fentanyl to low dose mepivacaine spinal anesthesia provides adequate surgical anesthesia with shorter duration of motor blockade. It is hypothesized that lower doses of spinal mepivacaine when combined with fentanyl will result in adequate surgical block for knee arthroscopy surgery with faster recovery and discharge compared to mepivacaine alone.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
34
45 mg 1.5% mepivacaine injection for spinal anesthesia
10 micrograms fentanyl with 30 mg 1.5% mepivacaine injection for spinal anesthesia
Toronto Western Hospital
Toronto, Ontario, Canada
Time to complete motor block regression (0) as measured by modified Bromage scale.
Time frame: Every 2 minutes from administration of the spinal until complete onset.
Block success, peak, and duration; time to ambulation, urination, discharge; incidence of adverse events.
Time frame: Up to 72 hours after surgery.
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