84323
document
Risk of aspiration with the laryngeal mask . In order to assess if the use of the laryngeal mask airway is associated with an increased risk of gastric regurgitation during mechanical ventilation , we studied 50 patients allocated randomly to undergo anaesthesia with either artificial ventilation with isoflurane and nitrous oxide in oxygen and atracurium ( group A ) or spontaneous ventilation with isoflurane and nitrous oxide in oxygen ( group B ) . In both groups a laryngeal mask airway was used . Regurgitation was assessed by the patient ingesting a methylene blue capsule 10 min before induction of anaesthesia and examining the oropharynx by direct laryngoscopy at the end of surgery . In one patient in each group , there was staining of the oropharynx with blue dye at the end of surgery . In the patient in group A , dye was present in the trachea and bronchi .
84324
Intervention_Physical
laryngeal
84325
Intervention_Pharmacological
anaesthesia
84326
Intervention_Physical
artificial ventilation
84327
Intervention_Pharmacological
with isoflurane and nitrous oxide in oxygen and atracurium
84328
Intervention_Pharmacological
spontaneous ventilation with isoflurane and nitrous oxide in oxygen
84329
Intervention_Pharmacological
methylene blue capsule
84330
Outcome_Physical
staining of the oropharynx
84331
Outcome_Physical
dye was present in the trachea and bronchi
84332
Participant_Sample-size
50