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Ultrasound (USG) guided supraclavicular block in upper extremity surgery is a popular approach. In recent years, many studies have been published on the perfusion index (PI) in the evaluation of block success. The main objective of this study is to evaluate the success and efficiency of the supraclavicular block with traditional methods (Pin-prick test, Modified Bromage Scale) and perfusion index. Materials and Methods: After the approval of the ethics committee (2018-11/01) was taken for the study; 30 volunteer patients who were 18-75 years old with American Society of Anesthesiologists (ASA) I-II scores undergoing a hand, forearm, arm surgery, were included in the study. In this prospective study; after ultrasound-guided supraclavicular block has been applied by injecting local anesthetic that consists of prilocaine 12.5 ml + bupivacaine 12.5 ml to all patients, sensory block was checked with pin-prick test every 3 minutes, motor block was checked by using modified Bromage scale every 2 minutes, hemodynamic parameters and PI values were recorded every 5 minutes. Times of motor block onset and total motor block onset, sensory and motor block ending time, the duration of block technique, the time of first postoperative analgesia consumption and positivity time for pin-prick test were recorded. Results: When the measured perfusion index values were compared, the differences were significant. When we compared the PI values in pairs, the differences between basal and 5 th min, 10th min, 15 th min, 20 th min, 25 th min, and 30 th min were significant. Positivity time for pin-prick test was 8.83 ± 2.70 min (minimum 5 minutes and maximum 15 minutes), motor block onset time was 6.7 ± 2.89 min (minimum 2 minutes and maximum 13 minutes), time of total motor block onset was 10.83 ± 3.07 min (minimum 6 minutes and maximum 19 minutes). In the 5 th minute PI values, an average increase of 148% was observed compared to basal PI values. Conclusion: As a result; the supraclavicular block provided faster sensory-motor block than other upper extremity blocks. It was concluded that the perfusion index was faster, more objective and simpler method than traditional methods in assessing the block success, due to vasodilatation that occurred before sensory and motor block.

Evaluation of ultrasound guided supraclavicular block with traditional methods and perfusion index on upper extremity surgeries