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29 November 2019 : Clinical Research  

Protective Effects of Dexmedetomidine and Oxycodone in Patients Undergoing Limb Ischemia-Reperfusion

Wenjie Cheng1AEF, Mingjie Wang1BC, Peng Liu1AE, Shuang Zhao1BCD, Xin Liu1A, Xiuli Wang1AEFG*

DOI: 10.12659/MSM.918261

Med Sci Monit 2019; 25:9073-9084

Abstract

BACKGROUND: Tourniquet-related complications are a common clinical problem. In the present study, we compared the effects of dexmedetomidine vs. oxycodone in patients undergoing limb ischemia-reperfusion.

MATERIAL AND METHODS: Fifty-four patients undergoing unilateral lower-extremity surgery under combined spinal and epidural anesthesia were randomly assigned to a control (ischemia-reperfusion, I/R) group, a dexmedetomidine (Dex) group, and an oxycodone (Oxy) group. Tourniquet-induced hemodynamic parameters changes among groups were compared. The serum concentration of malondialdehyde (MDA), superoxide dismutase (SOD), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), fatty acid binding protein 3 (FABP3), endothelin-1 (ET-1), and brain-derived neurotrophic factor (BDNF) were measured using ELISA before anesthesia and at 30 min and at 6 h after tourniquet release.

RESULTS: In the control group, tourniquet use caused significant increases in systolic arterial pressure (SAP), mean arterial pressure (MAP), diastolic arterial pressure (DAP), and rate-pressure product. Compared with Oxy, Dex significantly decreased heart rate (HR). Both Dex and Oxy lowered SAP compared with the control group. No significant difference was observed in DAP between Dex and Oxy. The levels of MDA, TNF-α, IL-6, FABP3, and ET-1 were significantly higher, while the SOD and BDNF were significantly lower compared to baseline in the I/R group, but the variation range of those agents was significantly smaller in the Dex and Oxy groups, and the measured values were comparable between the 2 groups.

CONCLUSIONS: Compared with Dex, Oxy was not inferior in mitigating tourniquet-induced hyperdynamic response, ameliorating the inflammatory reaction, and protecting remote multiple organs in lower-extremity surgery patients.

Keywords: Dexmedetomidine, Oxycodone, Surgery, Plastic, Tourniquets, Brain-Derived Neurotrophic Factor, Endothelin-1, Fatty Acid Binding Protein 3, Hemodynamics, Interleukin-6, Ischemia, Lower Extremity, Malondialdehyde, Peripheral Vascular Diseases, Prospective Studies, Random Allocation

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750