Application of ultrasound-guided paraspinal block combined with lumbar quadratus block in laparoscopic radical resection of colorectal cancer
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Interventions: Experimental group:Ultrasound-guided paravertebral nerve block combined with lumbar quadratus muscle block;Control group:Bilateral lumbar quadratus block guided by ultrasound Primary outcome(s): VAS score at rest and exercise at 2, 4, 6, 12, 24 and 48 hours after operation Study Design: Parallel
创建时间：
2021-02-15
