[Retracted] Clinical Application of Ultrasound Microscopy-Guided Pediatric Brachial Plexus Nerve Block Anesthesia

Table 2

Comparison of the puncture success rate and anesthetic complications between the two groups of children.

Group	One-time puncture success rate	Complications of anesthesia
		Local anesthetic poisoning	Nerve damage	Pneumothorax	Hematoma	Phrenic nerve palsy	Total occurrence
Research group	92.8	2.5	0	0	0	0	2.5
Control group	75.7	4.8	2.5	2.5	2.5	2.5	14.7
value	4.478	3.906
value	0.035	0.049