Pain Management Interventions for Hip Fracture
Effectiveness of Nerve Block on Other Important Outcomes
In all studies, nerve blocks were compared with standard care alone. Nerve blocks do not show an effect on 30-day mortality rates, but they do reduce the incidence of delirium. The strength of evidence in support of these results is moderate for incidence of delirium and low for mortality rate. Using the absolute risk reduction for delirium, which is calculated from the randomized controlled trial data, the number of patients that must be treated to reduce the occurrence of delirium in one additional patient (NNT), when compared with “usual care,” is nine.
- Abou-Setta AM, Beaupre LA, Jones CA, et al. Pain Management Interventions for Hip Fracture. AHRQ Comparative Effectiveness Review No. 30 (Prepared by the University of Alberta Evidence-based Practice Center under Contract No. 290-02-0023). Rockville, MD: Agency for Healthcare Research and Quality; May 2011. AHRQ Publication No. 11-EHC022-EF.
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