• Mark R Draper, Barbara Blagnys, and Don J Premachandra.
• Department of Otolaryngology, James Paget Hospital, Gorleston, Great Yarmouth, Norfolk, England, UK. mark@draperworld.com <mark@draperworld.com>
• J Otolaryngol. 2007 Jun 1; 36 (3): 191-95.

ObjectiveTo assess whether /i:/ ("ee") is the best sound to use during indirect laryngoscopy to produce the optimal view of the larynx.DesignProspective study.SettingDistrict general hospital otolaryngology outpatient clinic.PatientsEighty-seven patients from a general otolaryngology clinic with no laryngeal or pharyngeal symptoms or pathology.Main Outcome MeasuresThe views obtained during indirect laryngoscopy and vocalization of /i:/ ("ee"), /ei/ ("ay"), /[see text]/ ("err"), /a:/ ("ah"), and /eă/ ("air") were graded according to a laryngoscopy grading system.ResultsThe greatest number of adequate views of the larynx was achieved by using the sounds /i:/ and /[see text]/. There was no significant difference between /i:/ and /[see text]/ (p = .740), but there were significant differences between /i:/ and /ei/ (p = .019), /i:/ and /a:/ (p = .00000), and /i:/ and /eă/ (p = .00013).ConclusionFor the optimal view of the larynx during indirect laryngoscopy, we recommend the use of the sounds /i:/ ("ee") and /[see text]/ ("err").

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