Reduced Ropivacaine Volume with Perineural Dexamethasone in PENG Block for Total Hip Arthroplasty: A Randomized Controlled Trial.

This difference was highly significant, with a p -value of <0.0001 and a mean difference of 7.8 h (95% CI: 6.0 to 8.0), indicating a prolonged analgesic effect when dexamethasone was added to the block, as seen in Table 2 and Figure 2 .

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