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[Prognostic value of a screening test for difficult microlaryngoscopy]
A Müller1, L Verges, R Gottschall
1Klinik und Poliklinik Für, Hals-Nasen, Universitäts-HNO-Klinik Jena, Lessingstrasse 2, 07740 Jena. a.mueller@med.uni-jena.de
HNO
|September 24, 2002
Summary
Predicting difficult microlaryngoscopy is challenging. While routine indirect laryngoscopy showed some predictive value, existing screening scores were insufficient for difficult airway management.
Area of Science:
- Otolaryngology
- Anesthesiology
- Airway Management
Context:
- Difficult endotracheal intubation prediction relies on various screening tests.
- The incidence and predictive accuracy of these tests for microlaryngoscopy remain under-investigated.
Purpose:
- To prospectively evaluate the incidence of difficult microlaryngoscopy.
- To assess the prognostic value of screening tests for predicting difficult microlaryngoscopic procedures.
Summary:
- A prospective study of 81 patients assessed glottic view during microlaryngoscopy using supraglottic jet ventilation.
- Difficult microlaryngoscopy occurred in 4.9% of cases.
- Screening scores showed low positive predictive value; indirect laryngoscopy with phonation had the highest (50%).
Impact:
- An impossible indirect laryngoscopy may signal a difficult microlaryngoscopic procedure.
- Multivariate risk indices and checklists could enhance preoperative screening accuracy for airway management.