Injection Optimization of Infraclavicular and Axillary Brachial Plexus Block: Comparison of Number of Attempts and Performance Time

In upper extremity surgery, brachial plexus block (BPB) is routinely applied successfully as general anesthesia (GA). However, BPB is less invasive technique than GA. Peripheral nerve blocks have some potential benefits, such as lower risk of nausea and vomiting, early ambulation, early discharge, and better control of postoperative pain. The BPB is applied to various areas such as axillary, supraclavicular, infraclavicular and interscalene areas under the guidance of ultrasound and nerve stimulator. Among these methods, BPB administration success rates are around 95-100%. The other condition is anesthetic time which is important for the turnover of operating room. Anesthetic time is the sum of the performance time and onset time. In addition performance time and number of needle attempts also associated with patient satisfaction. The primary aim of this study is to determine the number of attempts and the performance time with the onset time and anesthetic time. If the procedure is simple, the performance time may be shorter. Therefore, the investigators aim that comparison of two different procedures which are single injection infraclavicular brachial plexus block and multiple injection axillary brachial plexus block by ultrasound guidance. In addition, the investigators will examine the duration of anesthesia and surgery, the duration of sensory and motor block endings, patient comfort and pain scales in the postoperative period.