title: [Changes in intraocular pressure during anesthesia with intratracheal intubation or laryngeal mask].
abstract: OBJECTIVE
  To compare the effects of the laryngeal mask airway (LMA), and the tracheal tube (TT) insertion on intra-ocular pressure (IOP) in eye surgery.
  
  
  METHODS
  Prospective non-randomized study.
  
  
  METHODS
  Eighty patients scheduled for eye surgery under general anaesthesia were allocated into either a LMA group (n = 37) or a TT group (n = 43).
  
  
  METHODS
  After induction of anaesthesia with propofol, vecuronium and phenoperidine, either a TT or a LMA were inserted. IOP, heart rate (HP) and mean arterial pressure (MAP) were measured before (TO) and after induction (T1), after TT or LMA insertion (20 s:T2, 6 min:T3), and before extubation (T4).
  
  
  RESULTS
  The HR, MAP and IOP increased significantly at T2 (compared to T1 but not to T0) in the TT group, for a short time, whereas no significant changes occurred in the LMA group.
  
  
  CONCLUSIONS
  LMA insertion does not elicit significant haemodynamic or IOP changes. Conversely, the TT increases HR, MAP and IOP. These changes can be deleterious in case of emergency surgery for perforating eye injuries. The LMA can be recommended as an alternative to TT in eye surgery, provided security rules are followed, because of the risk of displacement of LMA during surgery.
authors.affiliation: Département d'anesthésie-réanimation B, CHU Nord, Amiens, France.
authors.forename: N
authors.initials: N
authors.lastname: Blanchard
authors.forename: P
authors.initials: P
authors.lastname: Jezraoui
authors.forename: S
authors.initials: S
authors.lastname: Milazzo
authors.forename: F
authors.initials: F
authors.lastname: Daelman
authors.forename: D
authors.initials: D
authors.lastname: Rajaonarivony
authors.forename: M
authors.initials: M
authors.lastname: Ossart
mesh_terms: D000328:Adult; D000368:Aged; D000768:Anesthesia, General; D005128:Eye Diseases / Q000601:surgery; D005260:Female; D006439:Hemodynamics; D006801:Humans; D007429:Intraocular Pressure; D007442:Intubation, Intratracheal; D017214:Laryngeal Masks; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies