The primary aim of this study is to evaluate if multiple postoperative administrations with a solution of ropivacaine, ketorolac and epinephrine into the operating field through a catheter would affect morphine consumption. Secondary end-points are pain intensity, side effects and length of stay.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
80
The RK-group receives four intra-articular injections via catheter with a total volume of 40 ml (380 mg ropivacaine and 60 mg ketorolac) combined with 4 intravenous injections of saline during 24 hours postoperatively
The K-group receives four intra-articular injections via catheter with a total volume of 40 ml saline combined with 4 intravenous injections of ketorolac (total 60 mg) during 24 hours postoperatively
Aarhus University Hospital
Aarhus, Denmark
Morphine consumption
Cummulative morphine comsumption postoperatively
Time frame: 24 hours postoperatively
Pain intensity
Pain intensity measured on the visual analog scale (VAS) at rest and during walking
Time frame: 24 hours postoperatively
Postoperative nausea
Number of episodes of nausea measured on a 3 points rating scale (mild, moderate and severe)
Time frame: 24 hours postoperatively
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