title: [Self-training in needle-knife sphincterotomy].
abstract: OBJECTIVE
  To analyze our experience in self-training in needle-knife sphincterotomy and to estimate the number of procedures necessary to reach competence in this technique.
  
  
  METHODS
  Retrospective analysis of the first 60 needle-knife sphincterotomies performed, paying attention to success rates, the need for one or two attempts and the incidence and severity of early complications. The results were analyzed and divided into 2-year periods. The training period was subsequently determined using a qualitative method which combines the three above-mentioned criteria and sets competence level at 90%.
  
  
  RESULTS
  Of the 60 attempted needle-knife sphincterotomies (five in Billroth-II patients), 54 (90%) were completed. The procedure was required in 20% of all the sphincterotomies completed. Needle-knife sphincterotomy was completed at the first attempt in 39 (65%) patients and complications appeared in 13 (22%), three (5%) of which were serious but not fatal. Analysis of 2 year periods showed an almost 100% increase in the total number of needle-knife sphincterotomies completed and in those completed at the first attempt, as well as a reduction in the complication rate, which subsequently stabilized at below 15%. Forty needle-knife sphincterotomies were needed to reach competence level.
  
  
  CONCLUSIONS
  Needle-knife sphincterotomy can be learned without training from an endoscopist with experience in this technique. Competence can be reached after 40 procedures. Nevertheless, we propose an alternative method to our own to achieve competence in less time and with fewer complications.
authors.affiliation: Servicio de Aparato Digestivo, Hospital Universitario de Getafe, Madrid.
authors.forename: E J
authors.initials: EJ
authors.lastname: de la Morena
authors.forename: M
authors.initials: M
authors.lastname: Domínguez
authors.forename: M
authors.initials: M
authors.lastname: Lumbreras
authors.forename: V
authors.initials: V
authors.lastname: Opio
authors.forename: E
authors.initials: E
authors.lastname: Moyano
authors.forename: J
authors.initials: J
authors.lastname: Garćia Alvarez
mesh_terms: D002983:Clinical Competence / Q000706:statistics & numerical data; D013502:General Surgery / Q000193:education* / Q000706:statistics & numerical data; D006801:Humans; D011183:Postoperative Complications / Q000453:epidemiology; D012189:Retrospective Studies; D016717:Sphincterotomy, Endoscopic / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D016896:Treatment Outcome