Abstract
Good glottic exposure is a prerequisite for a good microlaryngeal surgery. Often this is difficult to predict preoperatively. This study aims to evaluate the utility of office-based rigid laryngoscopy (70°) as a screening tool to predict laryngeal exposure during micro laryngoscopy. Sixty-nine patients underwent office-based rigid laryngeal examination followed by micro laryngoscopic surgery for benign vocal cord lesions. Office-based laryngoscopy was classified as grade 1 when the entire glottis with anterior commissure (AC) was visualized without undue traction of tongue; grade 2 when AC was visualized only during phonation and with some traction of tongue and grade 3 when there is an inability to visualise the glottis adequately despite moderate traction of tongue and the examination was completed using a flexible scope. These were correlated with laryngeal exposure during micro laryngoscopy. 42 patients were categorized as grade 1 out of which 39 (93%) had a favourable laryngeal exposure (class 1) while only 3 (7%) had a partially favourable exposure (class 2). 18 patients were categorized as grade 2 out of which 12(66%) had a favourable exposure (class 1) as against 6 (33%) who had a partially favourable exposure (class 2). Nine of our patients were categorized as grade 3 out of which all 9 (100%) had an unfavourable exposure (class 3) requiring angled tele laryngoscopy to complete the surgery. A strong correlation between office-based laryngoscopic grading and exposure during operative laryngoscopy was obtained statistically (Cramer’s V test, V = 0.746). Office examination with a 70° telescope is a good predictor of glottic exposure during micro laryngoscopy. We believe that the ease of performing a micro laryngoscopy in the operating room is directly proportional to the ease of doing laryngoscopy in the office.
Similar content being viewed by others
References
Zeitels SM, Vaughan CW (1994) “External counterpressure” and “internal distention” for optimal laryngoscopic exposure of the anterior glottal commissure. Ann Otol Rhinol Laryngol 103(9):669–675. https://doi.org/10.1177/000348949410300902
Piazza C, Mangili S, Bon FD, Paderno A, Grazioli P, Barbieri D, Perotti P, Garofolo S, Nicolai P, Peretti G (2014) Preoperative clinical predictors of difficult laryngeal exposure for microlaryngoscopy: the Laryngoscore. Laryngoscope 124(11):2561–2567. https://doi.org/10.1002/lary.24803
Arjun AP, Dutta A (2019) A study of application of preoperative clinical predictors of difficult laryngeal exposure for microlaryngoscopy: the laryngoscore in the indian population. Indian J Otolaryngol Head Neck Surg 71(4):480–485. https://doi.org/10.1007/s12070-019-01658-2
Paul RR, Varghese AM, Mathew J, Chandrasekharan R, Amalanathan S, Asif SK, Kurien M (2016) Difficult laryngeal exposure in microlaryngoscopy: Can it be predicted preoperatively? Indian J Otolaryngol Head Neck Surg 68(1):65–70. https://doi.org/10.1007/s12070-015-0913-9
Roh J-L, Lee Y-W (2005) Prediction of difficult laryngeal exposure in patients undergoing microlaryngosurgery. Ann Otol Rhinol Laryngol 114:614–620. https://doi.org/10.1177/000348940511400806
Sánchez-Morillo J, Estruch-Pérez MJ, Hernández-Cádiz MJ, Tamarit-Conejeros JM, Gómez-Diago L, Richart-Aznar M (2012) Indirect laryngoscopy with rigid 70-degree laryngoscope as a predictor of difficult direct laryngoscopy. Acta Otorrinolaringol Esp 63(4):272–279. https://doi.org/10.1016/j.otorri.2012.01.007
Funding
None.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
None.
Ethical approval
Approval taken.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Manjunath, M.K., Sachidananda, R., Jyothi Swarup, R. et al. Office Rigid Laryngoscopy as a Predictor for Glottic Exposure in Microlaryngoscopy. Indian J Otolaryngol Head Neck Surg 76, 1765–1769 (2024). https://doi.org/10.1007/s12070-023-04403-y
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12070-023-04403-y