According to the report, continuous wound infusion with local anesthetic produces lower pain scores, reduced morphine use and reduced nausea and vomiting. The study author added that a positive effect on superficial and deep wound pain was still present three months after the infusion.
The study included 76 patients undergoing minimally invasive hip arthroplasty surgery. All patients received a specially designed wound catheter, and some patients were infused with local anesthetic ropivacaine while others were infused with an inactive placebo solution. Patients receiving ropivacaine had better pain control during the first 48 hours after surgery, with lower pain scores at rest and in motion.
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