Résumé
The past ten years have showed real and considerable growth in the number and complexity of ambulatory surgeries. The remaining real problems are the postoperative pain and the adverse effects due to parenteral opioids promoting hospital readmissions and increasing costs. This events limit the expansion of outpatient surgery. Regional anesthesia techniques such as spinal anesthesia and peripheral nerve blocks are ideal techniques for one day hospital admissions surgical procedures. It is now fully demonstrated that these techniques allowed rapid and complete anesthetic blocks, a limitation of adeverses events and unplanned hospital admissions and increased the quality of prolonged optimal postoperative pain relief if continuous peripheral nerve blocks are used.