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KMID : 0356920130640060494
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Korean Journal of Anesthesiology
2013 Volume.64 No. 6 p.494 ~ p.499
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Comparison of ultrasound-guided supraclavicular block according to the various volumes of local anesthetic
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Jeon Dae-Geun
Kim Seok-Kon
Kang Bong-Jin
Kwon Min-A
Song Jae-Gyok
Jeon Soo-Mi
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Abstract
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Background: The ultrasound guidance in regional nerve blocks has recently been introduced and gaining popularity. Ultrasound-guided supraclavicular block has many advantages including the higher success rate, faster onset time, and fewer complications. The aim of this study was to examine the clinical data according to the varied volume of local anesthetics in the ultrasound-guided supraclavicular block.
Methods: One hundred twenty patients were randomized into four groups, according to the local anesthetic volume used: Group 35 (n = 30), Group 30 (n = 30), Group 25 (n = 30), and Group 20 (n = 30). Supraclavicular blocks were performed with 1% mepivacaine 35 ml, 30 ml, 25 ml, and 20 ml, respectively. The success rate, onset time, and complications were checked and evaluated.
Results: The success rate (66.7%) was lower in Group 20 than that of Group 35 (96.7%) (P < 0.05). The average onset times of Group 35, Group 30, Group 25, and Group 20 were 14.3 ± 6.9 min, 13.6 ± 4.5 min, 16.7 ± 4.6 min, and 16.5 ± 3.7 min, respectively. There were no significant differences. Horner’s syndrome was higher in Group 35 (P < 0.05).
Conclusions: In conclusion, we achieved 90% success rate with 30 ml of 1% mepivacaine. Therefore, we suggest 30 ml of local anesthetic volume for ultrasound-guided supraclavicular block.
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KEYWORD
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Regional nerve blocks, Supraclavicular block, Ultrasound guidance
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