title: LONG-TERM POSTOPERATIVE ENDOSCOPIC FINDINGS AFTER GASTRIC BYPASS PROCEDURE: a co-occurrence analysis.
abstract: BACKGROUND
  A multitude of endoscopic findings post-gastric bypass procedures have been previously reported in the literature, but to our knowledge, no present rules exist that could guide clinicians regarding which findings should be actively sought, once an initial finding is identified.
  
  
  OBJECTIVE
  To identify co-occurrence patterns among endoscopic findings of patients having undergone past gastric bypass procedure.
  
  
  METHODS
  Our registry involves all consecutive patients undergoing an upper endoscopic evaluation after a gastric bypass procedure. We collected information on the presence of the endoscopic findings in post-gastric bypass surgery patients. Co-occurrence evaluation involved the use of intersection, cluster and item factor analyses.
  
  
  RESULTS
  A total of 396 endoscopic evaluations were made on 339 patients. Most patients were female (81.1%), with an average BMI of 31.88±6.7 at the time of endoscopy. Esophagitis was the most common isolated finding (35.3%). Endoscopic findings clustered around two groups, (1) the ring-related complications involving ring displacement, ring slips and gastric pouch, while (2) stenosis-related findings involved dilation and stenosis (P<0.01).
  
  
  CONCLUSIONS
  While most endoscopic findings after gastric bypass endoscopic procedures are isolated, ring and stenosis-related clusters should be used as a set of rules by clinicians, as it might enhance their probability of finding co-occurring conditions.
authors.affiliation: Kaiser Hospital Dia, São José do Rio Preto, SP, Brasil.|Grupo Brasileiro de Endoscopia Bariátrica.
authors.forename: Luiz Gustavo de
authors.initials: LG
authors.lastname: Quadros
authors.affiliation: Kaiser Hospital Dia, São José do Rio Preto, SP, Brasil.
authors.forename: Roberto Luiz
authors.initials: RL
authors.lastname: Kaiser
authors.affiliation: Grupo Brasileiro de Endoscopia Bariátrica.|Gastro Obeso Center, São Paulo, SP, Brasil.
authors.forename: Manoel Dos Passos
authors.initials: MD
authors.lastname: Galvão
authors.affiliation: Grupo Brasileiro de Endoscopia Bariátrica.|Universidade Federal de Pernambuco, Recife, PE, Brasil.
authors.forename: Josemberg Marins
authors.initials: JM
authors.lastname: Campos
authors.affiliation: Grupo Brasileiro de Endoscopia Bariátrica.|Universidade Federal de Pernambuco, Recife, PE, Brasil.
authors.forename: Marcelo Falcão de
authors.initials: MF
authors.lastname: Santana
authors.affiliation: Universidade Federal de Pernambuco, Recife, PE, Brasil.
authors.forename: Alvaro Antonio Bandeira
authors.initials: AA
authors.lastname: Ferraz
mesh_terms: D000328:Adult; D003251:Constriction, Pathologic / Q000601:surgery; D003430:Cross-Sectional Studies; D016099:Endoscopy, Gastrointestinal; D005260:Female; D015390:Gastric Bypass / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis* / Q000209:etiology; D011184:Postoperative Period; D016896:Treatment Outcome; D055815:Young Adult