Overview Levobupivacaine on Heart Rate Variability (HRV) in Spinal Anesthesia Status: Unknown status Trial end date: 2010-07-01 Target enrollment: Participant gender: Summary The purpose of this study is to compare if the effect of levobupivacaine on autonomic nervous system smaller than that of bupivacaine. Phase: Phase 4 Details Lead Sponsor: National Taiwan University HospitalTreatments: AnestheticsBupivacaineLevobupivacaine