title: Comparison between ultrasound-guided sciatic-femoral nerve block and unilateral spinal anaesthesia for outpatient knee arthroscopy.
abstract: OBJECTIVE
  To compare unilateral spinal anaesthesia (USA) and ultrasound-guided combined sciatic-femoral nerve block (USFB) in ambulatory arthroscopic knee surgeries in terms of haemodynamic stability, nerve block quality, bladder function, adverse events and time-to-readiness for discharge (TRD).
  
  
  METHODS
  Patients undergoing ambulatory arthroscopic knee surgery were randomly assigned to one of two groups. The USA group received 2 ml (10 mg) of 0.5% levobupivacaine and the USFB group received a 25 ml mixture consisting of 10 ml of 2.0% lidocaine, 10 ml of 0.5% levobupivacaine and 5 ml of saline (15 ml for the femoral and 10 ml for the sciatic nerve block). Preparation time (PT), surgical anaesthesia time (SAT), operation time, total anaesthesia time, time-to-first spontaneous urination, time-to-first analgesia, TRD, adverse events and patient satisfaction were recorded.
  
  
  RESULTS
  A total of 40 patients were enrolled in the study (n = 20 per group). PT, SAT, total anaesthesia time and time-to-first analgesia were significantly shorter in the USA group than the USFB group; time-to-first spontaneous urination and TRD were significantly longer in the USA group than the USFB group.
  
  
  CONCLUSIONS
  USFB provided sufficient duration of sensory blockade and it reduced the TRD and the rate of adverse events.
authors.affiliation: Department of Anaesthesiology, Faculty of Medicine, Mustafa Kemal University, Hatay, Turkey.
authors.forename: Isil
authors.initials: I
authors.lastname: Davarci
authors.forename: Kasim
authors.initials: K
authors.lastname: Tuzcu
authors.forename: Murat
authors.initials: M
authors.lastname: Karcioglu
authors.forename: Sedat
authors.initials: S
authors.lastname: Hakimoglu
authors.forename: Raif
authors.initials: R
authors.lastname: Özden
authors.forename: Erhan
authors.initials: E
authors.lastname: Yengil
authors.forename: Çagla Özbakis
authors.initials: ÇÖ
authors.lastname: Akkurt
authors.forename: Kerem
authors.initials: K
authors.lastname: Inanoğlu
mesh_terms: D000328:Adult; D000556:Ambulatory Surgical Procedures; D000775:Anesthesia, Spinal / Q000379:methods*; D000779:Anesthetics, Local; D001182:Arthroscopy; D002045:Bupivacaine / Q000031:analogs & derivatives*; D005260:Female; D005267:Femoral Nerve / Q000187:drug effects; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D000077554:Levobupivacaine; D008012:Lidocaine; D008297:Male; D008875:Middle Aged; D009407:Nerve Block / Q000295:instrumentation / Q000379:methods*; D010045:Outpatients; D012584:Sciatic Nerve / Q000187:drug effects; D014463:Ultrasonography; D001743:Urinary Bladder / Q000502:physiology
chemical_list: D000779:Anesthetics, Local; D008012:Lidocaine; D000077554:Levobupivacaine; D002045:Bupivacaine
keywords: Knee arthroscopy; pain; postoperative outcomes; sciatic–femoral nerve block; spinal anaesthesia; ultrasound-guided