Overview The Preemptive Analgetic Potency of Low Dose S-Ketamine Status: Completed Trial end date: 2012-09-01 Target enrollment: Participant gender: Summary The primary hypothesis is improved postoperative analgetic quality using S-Ketamine, particularly in patients suffering from chronic pain. Phase: Phase 3 Details Lead Sponsor: Medical University of GrazTreatments: EsketamineKetamine