Document Detail


Prediction of difficult laryngeal exposure in patients undergoing microlaryngosurgery.
MedLine Citation:
PMID:  16190094     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: Although difficult laryngeal exposure (DLE) is a common problem encountered during microlaryngosurgery, reliable predictors of DLE and grading systems of laryngeal exposure have been scarcely suggested in the field of laryngology. We propose a new classification of laryngeal exposure focusing on the extent of glottic visualization. METHODS: We investigated physical parameters that could predict DLE; 73 patients underwent a physical examination including 15 parameters. During endotracheal intubation and suspension laryngoscopy, Cormack-Lehane and laryngeal exposure scores were obtained for each patient and compared with the parameters. RESULTS: The patients' ages ranged from 23 to 77 years. The laryngeal exposure score was correlated with the Cormack-Lehane score (p < .001, r = 0.469). Of all parameters, body mass index, neck circumference, thyroid-mental distance, and horizontal thyroid-mental distance showed significant correlation with the laryngeal exposure score (p < .05). From analysis of the candidate parameters in 13 patients with DLE and the non-DLE group, we found that the cutoff values for predicting DLE were a body mass index of > 25.0 kg/m2, a neck circumference of > 39.5 cm, a thyroid-mental distance of < 5.5 cm, and a horizontal thyroid-mental distance of < 4.0 cm. CONCLUSIONS: According to the proposed classification of laryngeal exposure, patients with obesity, a muscular neck, or retrognathia are likely to present DLE, and preoperative measurement of the predictors may be useful in preparing for microlaryngosurgery.
Authors:
Jong-Lyel Roh; Yong-Won Lee
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Annals of otology, rhinology, and laryngology     Volume:  114     ISSN:  0003-4894     ISO Abbreviation:  Ann. Otol. Rhinol. Laryngol.     Publication Date:  2005 Aug 
Date Detail:
Created Date:  2005-09-29     Completed Date:  2005-10-20     Revised Date:  2006-05-15    
Medline Journal Info:
Nlm Unique ID:  0407300     Medline TA:  Ann Otol Rhinol Laryngol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  614-20     Citation Subset:  AIM; IM    
Affiliation:
Department of Otolaryngology-Head and Neck Surgery, Cancer Research Institute, Chungnam National University College of Medicine, Daejeon, South Korea.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Female
Humans
Intubation, Intratracheal
Laryngeal Diseases / complications,  pathology,  surgery*
Laryngoscopy*
Larynx / surgery*
Male
Microsurgery*
Middle Aged
Neck Muscles / pathology
Obesity / complications
Pharyngeal Diseases / complications,  pathology,  surgery
Predictive Value of Tests
Retrognathism / complications

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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