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4组患儿神经阻滞并发症情况比较
Complications associated with brachial plexus nerve block in the 4 groups (n=20, Mean±SD)
| Group | Hematoma | Laryngeal nerve block | Horner syndrome | Bradycardia (< 70/min) | Respiratory depression |
| C | 0 | 1 | 3 | 0 | 1 |
| D1 | 0 | 1 | 2 | 0 | 1 |
| D2 | 0 | 1 | 2 | 0 | 1 |
| D3 | 0 | 1 | 2 | 1 | 1 |
