期刊
ANESTHESIA AND ANALGESIA
卷 111, 期 6, 页码 1552-1554出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1213/ANE.0b013e3181fb9507
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资金
- National Institutes of Health [GM077026, RR000827]
- National Institute of General Medical Sciences (Bethesda Maryland)
- National Center for Research Resources (Bethesda Maryland)
- University of California San Diego Department of Anesthesiology San Diego, California
BACKGROUND: Continuous peripheral nerve blocks (CPNB) may induce muscle weakness, and multiple recently published series emphasize patient falls after postarthroplasty CPNB. However, none have included an adequate control group, and therefore the relationship between CPNB and falls remains speculative. METHODS: We pooled data from 3 previously published, randomized, triple-masked, placebo-controlled studies of CPNB involving the femoral nerve after knee and hip arthroplasty. RESULTS: No patients receiving perineural saline (n = 86) fell (0%; 95% confidence interval [CI] = 0%-5%), but there were 7 falls in 6 patients receiving perineural ropivacaine (n = 85; 7%; 95% CI = 3%-15%; Fisher's exact test P = 0.013). CONCLUSIONS: Our analysis suggests that there is a causal relationship between CPNB and the risk of falling after knee and hip arthroplasty.
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