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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
170
Comparing time to motor block recovery in PACU, time to PACU discharge, time to ambulation and length of hospital stay
Comparing time to motor block recovery in PACU, time to PACU discharge, time to ambulation and length of hospital stay
Time to complete recovery of motor block
Time frame: 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.
Time to complete motor block recovery of lower limbs after spinal anesthesia
Motor block will be assessed by PACU nurses in PACU using standard Bromage motor scale.
Time frame: 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.
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