title: Subarachnoid anesthesia in young patients: a comparative analysis of two needle bevels.
abstract: OBJECTIVE
  This prospective, randomized, double-blind study compares the efficacy of two spinal needles in terms of their performance characteristics and associated perioperative complaints in young patients.
  
  
  METHODS
  ASA I and II patients aged from 20 to 40 years undergoing lower limb orthopedic surgery were included during a 12-month period. After application of the protocol, 158 patients were recruited. The patients were randomized to two groups: group I: 26-gauge Atraucan (n = 79) and Group II: 27-gauge Whitacre (n = 79). A study was made of the demographic parameters, technical characteristics, and peri- and postoperative complications.
  
  
  RESULTS
  No significant differences were found in the technical handling of the needles, number of attempts made to achieve the puncture, or the time required to perform the technique. No technical failures (spinal anesthesia inadequate for the planned surgery) were reported, and the frequency of complications during the procedure was identical in both groups. Frequency of postdural puncture headache (3.8%) or severity and duration showed no difference between the two groups. The overall assessment of postoperative complications revealed similar scores for both needles.
  
  
  CONCLUSIONS
  Technical handling (ease with which block was performed) of the needles analyzed was extremely easy, showing a high success rate which associated with the similar incidence of complications. Type of bevel does not appear to be a determining factor in the quality or morbidity associated with subarachnoid block when fine-gauge needles are used in young patients.
authors.affiliation: Department of Anesthesiology, Critical Care, and Pain Therapy, Valencia University General Hospital, Spain.
authors.forename: J
authors.initials: J
authors.lastname: De Andrés
authors.forename: J C
authors.initials: JC
authors.lastname: Valia
authors.forename: C
authors.initials: C
authors.lastname: Errando
authors.forename: G
authors.initials: G
authors.lastname: Rico
authors.forename: M D
authors.initials: MD
authors.lastname: Lopez-Alarcon
mesh_terms: D000328:Adult; D000775:Anesthesia, Spinal / Q000295:instrumentation*; D000779:Anesthetics, Local; D002045:Bupivacaine; D004311:Double-Blind Method; D004867:Equipment Design; D006801:Humans; D015994:Incidence; D009339:Needles; D019637:Orthopedic Procedures / Q000295:instrumentation; D011183:Postoperative Complications / Q000453:epidemiology; D011446:Prospective Studies
chemical_list: D000779:Anesthetics, Local; D002045:Bupivacaine