This study evaluates the impact of local anesthetic administration regiment through peri-neural femoral nerve catheter on pain and motor block frequency, after total knee arthroplasty.
This study evaluates the impact of local anesthetic administration regiment through peri-neural femoral nerve catheter on pain and motor block frequency, after total knee arthroplasty. One group of patients will receive automated intermittent bolus, while the others will get a continuous infusion. In both cases, patients will be able to administer supplementary auto-bolus if required.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
70
programmed intermittent bolus 5ml each one hour.
continuous infusion 6ml/h
CHU Liege
Liège, Belgium
Frequency of unplanned analgesia interventions.
Composite criteria including the frequency of unplanned analgesia interventions administered by the patient, or paramedical and medical staff, and by extenstion the total amount of opioids (in milligrams equivalent morphine) and local anesthetics (in milligrams) received in post-operative period.
Time frame: up to 72 hours after surgery
Pain difference
Pain difference accessed by Numeric Pain Rating Scale (0-10), twice a day, at rest and on movement.
Time frame: up to 72 hours after surgery
Motor block frequency
Accessed by physiotherapist twice a day, by testing the Quadriceps muscle.
Time frame: up to 72 hours after surgery
Mobilization quality during physiotherapy sessions.
accessed by physiotherapist, ability to walk with or without help, take stairs, and flex and extend knee (comparatively to the opposite knee).
Time frame: up to 72 hours after surgery
local anesthesia technique related complications
rate of complications including: hematoma, infection, catheter dislodgement or breakage, allergic events.
Time frame: until catheter removal 48 hours after surgery
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