After 240 min (4 h), the VAS score showed an increasing trend [ Figure 2 ].
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Clonidine as an Adjuvant to Caudal Epidural Ropivacaine for Lumbosacral Spine Surgeries.
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The sentences
In both groups, the VAS score followed a decreasing trend from 0 to 240 min of postoperatively, the VAS score was stable, and this period was almost totally pain-free.