KMID : 0356920100580030267
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Korean Journal of Anesthesiology 2010 Volume.58 No. 3 p.267 ~ p.271
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Cases series: ultrasound-guided supraclavicular block in 105 patients
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Jeon Dae-Geun
Kim Won-Il
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Abstract
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Background: Multiple needle attempts to gain a muscle twitch or a paresthesia for a classical supraclavicular brachial plexus block can increase the risks of nerve damage or pain. The aims of this study were to obtain reliable clinical data on ultrasound-guided supraclavicular blocks, demonstrate the higher success rate and fewer complications, and design an injection method for patients whose brachial plexus can not be located.
Methods: 105 patients received an ultrasound-guided supraclavicular block. 40 ml of 1% mepivacaine was injected without a muscle twitch or paresthesia. The groups were divided into two groups - Group A (n = 92, patients who had visible brachial plexus) and Group B (n = 13, patients whose brachial plexus can¡¯t be located). After the blocks, the clinical characteristics such as the success rate, the time to onset, the extent of the sensory block, and occurrence of complications were evaluated.
Results: The Success rate of Group A (98.9%) was higher than that of Group B (84.6%) (P < 0.05). The overall success rate was 97.1%. All patients could be operated on under sedation. The time to onset of Group A (12.6 ¡¾ 4.4 min) was shorter than that in Group B (23.1 ¡¾ 5.1 min) (P < 0.05). The overall time to onset was 13.8 ¡¾ 5.5 min. There were no serious complications such as pneumothorax.
Conclusions: An ultrasound-guided supraclavicular block is very effective in even patients whose brachial plexus can not be located.
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KEYWORD
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Brachial plexus block, Ultrasound-guided supraclavicular block
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