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Abstract
Introduction-Aim: The easiest method in postoperative analgesia is the infiltration of the wound with local anesthetic drugs. Although many local anesthetic drugs have been used for this type of infiltration, studies on levobupivacaine are rare. The aim of this study was to investigate the effects of different concentrations of levobupivacaine infiltration on wound healing. Method: Forty female Wistar-Albino rats (280–300 g) were included in the study, which were randomly separated into four groups. Rats were infiltrated with 1.25 mg/mL levobupivacaine in group L1.25 (n = 10), with 2.50 mg/mL levobupivacaine in group L2.5 (n = 10), with 3.75 mg/mL levobupivacaine in group L3.75 (n = 10), and with normal saline in control group (n = 10). Breaking-strength measurements, levels of hydroxyproline, and fibrotic index were evaluated in the tissue samples taken from the rats. Results: When the breaking-strength measurements were evaluated, we have found a significant difference between the control and the study groups (p < 0.05). In the intergroup comparison the difference between groups L1.25 and L3.75 was statistically significant (p < 0.05). In all of the levobupivacaine groups the levels of hydroxyproline were higher compared to the control group. Also significant differences were observed between groups L1.25 and L2.5 and groups L1.25 and L3.75 (p < 0.05). The levels of tissue fibrotic index were higher in all of the levobupivacaine groups compared to the control group (p < 0.05) and also a difference was observed between groups L1.25 and L3.75 in terms of tissue fibrotic index (p < 0.05). Conclusion: We have concluded that levobupivacaine used in clinical doses have a significant effect on the fastening of wound healing and this effect increases with an increase in the concentration of the levobupivacaine. We believe that levobupivacaine will be more widely preferred in the near future in the postoperative analgesia.