title: Do we still need to restrict preoperative fluid administration in ambulatory anorectal surgery under spinal anaesthesia?
abstract: BACKGROUND
  This study was undertaken to determine the effect of a restricted versus a standard intravenous fluid regimen on urinary retention and readiness for discharge after surgery for benign anorectal disease.
  
  
  METHODS
  A total of 41 ASA I-II patients were randomized into a standard fluid regimen group (group S, n=21) or a restricted fluid regimen group (group R, n=20). Spinal anaesthesia was performed with hyperbaric ropivacaine. Haemodynamic variables were noted. Hypotension, headache, analgesia requirement, nausea and vomiting, thirst and urinary retention were evaluated postoperatively. The Mann-Whitney U and chi-squared tests were used.
  
  
  RESULTS
  Patient demographics were comparable between the groups. The area under heart rate versus time curve was higher in group R than in group S (p=0.002). Additional fluid and ephedrine requirements were similar between the groups. First voiding time was longer in group R (p=0.045).
  
  
  CONCLUSIONS
  In minor anorectal surgery under spinal anaesthesia with ropivacaine, standard fluid regimen provides stable haemodynamic variables without urinary retention.
authors.affiliation: Department of Anesthesiology and Intensive Care, Ankara University Faculty of Medicine, Ibni Sina Hospital, Ankara, Turkey. basakceyda@hotmail.com
authors.forename: B C
authors.initials: BC
authors.lastname: Orbey
authors.forename: Z
authors.initials: Z
authors.lastname: Alanoglu
authors.forename: A A
authors.initials: AA
authors.lastname: Yilmaz
authors.forename: B
authors.initials: B
authors.lastname: Erkek
authors.forename: Y
authors.initials: Y
authors.lastname: Ates
authors.forename: M
authors.initials: M
authors.lastname: Ayhan Kuzu
mesh_terms: D000328:Adult; D000556:Ambulatory Surgical Procedures / Q000379:methods*; D000775:Anesthesia, Spinal / Q000379:methods*; D005260:Female; D005440:Fluid Therapy / Q000379:methods*; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control; D011300:Preoperative Care / Q000379:methods*; D012002:Rectal Diseases / Q000601:surgery*; D016896:Treatment Outcome; D016055:Urinary Retention / Q000209:etiology / Q000517:prevention & control*; D014563:Urodynamics / Q000502:physiology