Complications and limitations of high-speed digital imaging laryngoscopy

Abstract

Aim of the study: To define possible complications and the incidence of complications related to highspeed digital imaging laryngoscopy, and to determine the incidence of inability of visualisation of the entire glottis during examination. Materials and methods: We prospectively collected data regarding the possible complications, incidence of the development of complications, as well as the incidence of exams on which the entire glottis was not visualised, of 113 examinees who were examined with high-speed digital imaging laryngoscopy with and without the usage of topical anaesthesia. Results: We observed seven complications (3.09% of laryngoscopies) in six patients (5.3% of examinees). All complications were mild and short-term without any long-term consequences. Inability of visualisation of the entire glottis was noted in three examinees (2.65%). Due to a severe gag reflex in seven examinees (6.19%) the entire larynx could not be visualised. In four of them (57.14%) after the application of topical anaesthesia we were able to visualise the entire glottis. Conclusion: Results of our study confirm efficiency and safety of high-speed digital imaging laryngoscopy with low incidence of mild complications and low inability of visualisation of the entire glottis during examination. Further researches are needed for the development of a precise algorithm which would optimise and standardise high-speed digital imaging, improve tolerance and facilitate examination.

Keywords

• laryngoscopy – adverse effects
• methods; vocal cords – diagnostic imaging; image interpretation
• computer-assisted – methods; phonation; gagging; anesthetics