Spine
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Randomized Controlled Trial
The Effect of Dexmedetomidine Added to Preemptive Ropivacaine Infiltration on Postoperative Pain after Lumbar Fusion Surgery: A Randomized Controlled Trial.
A prospective and controlled study of dexmedetomidine added to preemptive ropivacaine infiltration in lumbar fusion surgery. ⋯ 2.
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Prospective research in middle-aged and elderly people. ⋯ 2.
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A cross-sectional study. ⋯ 4.
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Prospective study. ⋯ 3.
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Retrospective matched cohort study. ⋯ 3.