O' Brien Brian, Harmon Dominic, Duggan Michelle, Flynn Noel
Department of Anesthesia, University College Hospital, Galway, Ireland.
Can J Anaesth. 2002 Oct;49(8):871-3. doi: 10.1007/BF03017423.
We assessed the effect of cuff inflation of the laryngeal mask airway at removal on sore throat, pharyngeal morbidity and airway complications.
In a prospective randomized trial, we used a standardized technique of anesthesia and of laryngeal mask insertion in 126 consecutive day-case patients. Postoperatively, on eye opening, the masks were removed either inflated (Group A) or deflated (Group B) and examined for blood by a blinded observer. Episodes of coughing, gagging, laryngospasm, hiccups and retching, and symptoms of sore throat and hoarseness were recorded by the same observer.
Demographics were similar. Bloodstaining occurred in 21% of patients in Group A (n = 63) vs 13% in Group B (n = 63; P = 0.23); the incidence of sore throat was identical (19%). Group A experienced more hoarseness (22% vs 9%; P = 0.05). Overall airway complications did not differ between groups (19% vs 11%; P = 0.21).
We conclude that removal of the laryngeal mask airway inflated does not reduce the incidence of sore throat, pharyngeal morbidity or airway complications.
