title: Prospective evaluation of a new ultrathin one-plane bending videoendoscope for transnasal EGD: a comparative study on performance and tolerance.
abstract: BACKGROUND
  EGD, with small-diameter endoscopes, is routinely performed via a nasal route in adults.
  
  
  OBJECTIVE
  To evaluate a new ultrathin one-plane bending videoendoscope for transnasal EGD.
  
  
  METHODS
  Single center, prospective, randomized study.
  
  
  METHODS
  Edouard Herriot University Hospital.
  
  
  METHODS
  A total of 122 outpatients (median age, 49 years [18-81 years], 62 men and 60 women) were randomized into 2 groups (on a 2:1 basis) according to the endoscope used: (1) a standard 5.9-mm-diameter videoendoscope (80 patients) or (2) a one-plane bending high resolution 4.9-mm-diameter videoendoscope (42 patients).
  
  
  METHODS
  The operator assessed the quality of examination by using standard scores or a 100-mm visual scale. Patients quantified tolerance by using a 100-mm visual scale.
  
  
  RESULTS
  The duration of the procedure was the same in each group. The feasibility of transnasal insertion was significantly higher when using the 4.9-mm-diameter endoscope (97.61% [41/42 patients] vs 88.75% [71/80 patients], P<.05). The tolerance of EGD was significantly better in the group with the small videoendoscope, for global discomfort, pain, belching, and bloating. Similarly, acceptation of a new EGD in similar conditions was higher in group 2 (92.9% vs 80%, P<.05). The quality of examination (global, lavage, inflation, suction) was not different between the 2 groups.
  
  
  CONCLUSIONS
  Evaluation of patient tolerance and quality of examination was based on subjective features.
  
  
  CONCLUSIONS
  Availability of a new ultrathin one-plane bending videoendoscope represents a major technical improvement for transnasal EGD, which significantly improves both feasibility and patient tolerance, without affecting the quality of the examination.
authors.affiliation: Department of Digestive Diseases, Hôpital Edouard Herriot, Lyon, France.
authors.forename: Jérôme
authors.initials: J
authors.lastname: Dumortier
authors.forename: Claire
authors.initials: C
authors.lastname: Josso
authors.forename: Sabine
authors.initials: S
authors.lastname: Roman
authors.forename: Fabien
authors.initials: F
authors.lastname: Fumex
authors.forename: Vincent
authors.initials: V
authors.lastname: Lepilliez
authors.forename: Bénédicte
authors.initials: B
authors.lastname: Prost
authors.forename: Muriel
authors.initials: M
authors.lastname: Lot
authors.forename: Olivier
authors.initials: O
authors.lastname: Guillaud
authors.forename: Fabien
authors.initials: F
authors.lastname: Petit-Laurent
authors.forename: Marie-George
authors.initials: MG
authors.lastname: Lapalus
authors.forename: Thierry
authors.initials: T
authors.lastname: Ponchon
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D020776:Endoscopes, Gastrointestinal / Q000009:adverse effects; D016145:Endoscopy, Digestive System / Q000009:adverse effects / Q000295:instrumentation*; D004867:Equipment Design; D005240:Feasibility Studies; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity; D017060:Patient Satisfaction; D011446:Prospective Studies; D020535:Video-Assisted Surgery / Q000009:adverse effects / Q000295:instrumentation*