The research is to study the effectiveness and safety of combined lumbar plexus and sciatic nerve block by the guide of peripheral nerve stimulator (PNS) in unilateral knee replacement.There have be some papers which supported that combined lumbar plexus and sciatic nerve block may be more suitable for the old men.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
34
Patients in this group were assigned to receive lumbar plexus block and sciatic nerve block both using 0.33% ropivacaine 30ml guided by PNS
Combined spinal and epidural anesthesia were performed in patients of this group with 0.5% hyperbaric bupivacaine 8\~10mg at L2-3 or L3-4.
Patients will be assigned to receive lumbar plexus block and sciatic nerve block both using 0.33% ropivacain 30ml guided by PNS.
Guangzhou Military Region General Hospital, Department of Anesthesiology
Guangzhou, Guangdong, China
Maintenance time of sensory and motor nerve block
from the end of injection of local anesthetic drug up to 24h after operation
Time frame: up to 24h after operation
The change of hemodynamics
the changes of SBP and DBP at 0, 5, 10, 20, 30, 60 min after injection
Time frame: 0, 5, 10, 20, 30, 60 min after injection
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Combined spinal and epidural anesthesia will be performed in patients with 0.5% hyperbaric bupivacaine 8\~10mg.