Block Duration After Spinal Block and iv Dexamethasone.

Block Duration After Spinal Block and iv Dexamethasone: a Randomized Controlled Double-blinded Trial

It has been largely demonstrated that iv dexamethasone prolongs the duration of analgesia after peripheral nerve block. However, data are missing regarding the duration of analgesia after spinal block. The objective of this randomized controlled double-blinded trial is to assess whether intravenous dexamethasone administered after a spinal block, before the surgery would prolong sensory block characteristics without impacting the motor block duration.

Inclusion Criteria:

• Patient with ASA I-III status ;
• Patient scheduled for an osteosynthesis surgy of the lower limb

Exclusion Criteria:

• Polytrauma patient
• Pregnancy
• Contraindication to spinal anesthesia
• Contraindication to dexamethasone administration
• Patient with chronic pain