The regional methods of anesthesia for the neurosurgical operations of the spine and spinal cord reducing the needs for opioids intra operatively and reducing pain in the postoperative period, decrease the numbers of failed back syndrome.
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A Visual Analogue Scale (numerical rating scale (NRS)
Timeframe: 2 hours after surgery
A Visual Analogue Scale (numerical rating scale (NRS)
Timeframe: 6 hours after surgery
A Visual Analogue Scale (numerical rating scale (NRS)
Timeframe: 24 hour after surgery
A Visual Analogue Scale (numerical rating scale (NRS)
Timeframe: 48 hour after surgery