Abstract
Objective: Modified approaches are emphasized to make the traditional IVRA method more reliable and effective. We aimed to compare two different concentrations used with temporary tourniquet application in addition to the IVRA method for reducing local anesthetics amount in hand and wrist surgeries. Material and methods: After the approval of Gaziantep University Ethics Committee had been obtained, observation forms of patients with ASA physical score I-II who had undergone elective orthopedic upper extremity surgery were reviewed retrospectively. The patients were divided into two groups according to the concentration of 150 mg of lidocaine in saline. The patients were administered 150 mg lidocaine in 15 ml (Group 15, n:29) and 20 ml (Group 20, n:26) saline. Patients were enrolled into groups in a random and a blind fashion, and after the exclusion criteria were assessed, twenty patients from each group were evaluated. Demographic data, the classification of operation time, the peri-operative follow-up values, the sedoanelgesia consumption needs and the postoperative patient satisfaction scores were compared. Results: Demographic data were similar in both groups. The tourniquet time was 40.75±14.71 minutes in Group 15 and 38.25±9.77 minutes in Group 20 (p=0.531). Sedation start time was 23.18±9.02 in Group 15 (n=11) and 26.53±6.57 minutes in Group 20 (n=13) (p=0.304). Tourniquet pain time was 46.66±2.88 in group 15 (n=3) and 50.00±7.07 minutes in group 20 (n=2) (p=0.624). No statistically significant difference was found between the all-time classifications, hemodynamic values, peri-operative sedoanalgesia consumptions, and the patient satisfaction scores between the groups (p>0,05). A continuous increase in sedoanalgesic consumption amount with time was observed. None of the patients had signs of local anesthetic toxicity. Conclusion: We suppose that the plasticity inherent to the IVRA may be optimized by alternative adaptations to be used for decreasing the amount of local anesthetic to safer levels and for reducing the risk of related side effects.
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