Effect of Intravenous Ibuprofen on Ischemia-Reperfusion Injury Following Perioperative Tourniquet in Patients Undergoing Total Knee Arthroplasty

Oxidative stress occurs in the organism with ischemia due to tourniquet use and subsequent reperfusion. Oxidative stress increases postoperative morbidity. Some Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) perform their anti-inflammatory effects in part by binding or inhibiting their formation of active oxygen radicals at the site of inflammation. In this study, we aimed to evaluate the effect of IV ibuprofen on ischemia-reperfusion injury (IRI) in patients undergoing total knee arthroplasty over oxidative stress parameters. The patients were randomly divided into two groups. Each patient’s protocol number, age, sex, body mass index (BMI), additional disease, drug use, tourniquet time, hemoglobin value, additional analgesic requirement and application, adverse reaction development on the first postoperative day were recorded in the research follow-up form. Both groups of patients; before anesthesia, 45 minutes after tourniquet application, 5 minutes after tourniquet lowering, 20 minutes after tourniquet lowering and at 24th-hour post-op; TOS, TAS, paraoxonase, arylesterase, myeloperoxidase, catalase, ceruloplasmin, albumin, IMA, thiol-disulfide balance tests were studied. Statistical analysis of test results was performed. We observed that antioxidants decreased and oxidants increased on the first postoperative day in both groups in patients who underwent total knee arthroplasty. The decrease in antioxidant parameters was higher in IV ibuprofen doses compared to the control group in the case group; these doses indicate that the drug adversely affects the organism in the fight against oxidative stress, which is an undesirable effect. To evaluate this negative effect of IV ibuprofen which is increasingly used in postoperative analgesia, studies with different doses of drugs and different surgeries may be needed.