title: [Low-dose levobupivacaine plus fentanyl combination for spinal anesthesia in anorectal surgery].
abstract: BACKGROUND
  The aim of this study was to investigate the effects of spinal anesthesia using two different doses of fentanyl combined with low-dose levobupivacaine in anorectal surgery.
  
  
  METHODS
  In this prospective, double-blind study, 52 American Society of Anaesthesiologists I-II patients scheduled for elective anorectal surgery were randomized into two groups. The patients in group I received intrathecal 2.5mg hyperbaric levobupivacaine plus 12.5μg fentanyl and in group II received intrathecal 2.5mg hyperbaric levobupivacaine plus 25μg fentanyl. All the patients remained in the seated position for 5min after completion of the spinal anesthesia. Sensory block was evaluated with pin-prick test and motor block was evaluated with a modified Bromage scale.
  
  
  RESULTS
  Motor block was not observed in both of the groups. The sensory block was limited to the S2 level in group I, and S1 level in group II. None of the patients required additional analgesics during the operation. Time to two-segment regression was shorter in group I compared with group II (p<0.01). One patient in group I and 5 patients in group II had pruritus. Hemodynamic parameters were stable during the operation in both of the groups.
  
  
  CONCLUSIONS
  Spinal saddle block using hyperbaric levobupivacaine with both 12.5μg and 25μg fentanyl provided good quality of anesthesia without motor block for anorectal surgery in the prone position.
authors.affiliation: Departamento de Anestesiologia e Reanimação, Kecioren Training and Research Hospital, Ankara, Turquia. Electronic address: mehtaphonca@hotmail.com.
authors.forename: Mehtap
authors.initials: M
authors.lastname: Honca
authors.affiliation: Departamento de Anestesiologia e Reanimação, Kecioren Training and Research Hospital, Ankara, Turquia.
authors.forename: Necla
authors.initials: N
authors.lastname: Dereli
authors.affiliation: Departamento de Anestesiologia e Reanimação, Istanbul Medipol University, Medipol Mega Hospital, Istanbul, Turquia.
authors.forename: Emine Arzu
authors.initials: EA
authors.lastname: Kose
authors.affiliation: Departamento de Medicina e Bioquímica, Gulhane Military Medical Academy, Ankara, Turquia.
authors.forename: Tevfik
authors.initials: T
authors.lastname: Honca
authors.affiliation: Departamento de Anestesiologia e Reanimação, Kecioren Training and Research Hospital, Ankara, Turquia.
authors.forename: Selcen
authors.initials: S
authors.lastname: Kutuk
authors.affiliation: Departamento de Anestesiologia e Reanimação, Kecioren Training and Research Hospital, Ankara, Turquia.
authors.forename: Selma Savas
authors.initials: SS
authors.lastname: Unal
authors.affiliation: Departamento de Anestesiologia e Reanimação, Kecioren Training and Research Hospital, Ankara, Turquia.
authors.forename: Eyup
authors.initials: E
authors.lastname: Horasanli
keywords: Anorectal surgery; Cirurgia colorretal; Fentanil; Fentanyl; Hyperbaric levobupivacaine; Levobupivacaína; Raquianestesia; Spinal