Thyromental height test as a new method for prediction of difficult intubation with double lumen tube

PloS One
Piotr PalczynskiKurt Ruetzler

Abstract

Predicting difficult intubation is of high clinical interest. 237 patients aged ≥18 years were included in the study. Preoperative airway evaluation included: Mallampati test, thyromental distance, sternomental distance and thyromental height test. During direct laryngoscopy Cormack & Lehane classification was graded. We calculated the ROC AUC, sensitivity and specificity for thyromental height test as a primary end point of our study. Only thyromental height test and Cormack-Lehane scale proved significant on occurrence of difficult intubation. The optimal sensitivity and specificity values of thyromental height test were met with a cut off value of 50 mm. With 1 mm increase in thyromental height test, risk of difficult intubation decreased by 7%. Thyromental height test is a simple, easy to perform and non-invasive test to predict difficult intubation in patients scheduled for elective double lumen tube intubation during thoracic surgical procedures. With 1 mm above 50 mm increase in thyromental height test the risk of difficult intubation decreased by 7%. Clinicaltrials.gov Identifier: NCT02988336.

Associated Clinical Trials

References

Nov 1, 1984·Anaesthesia·R S Cormack, J Lehane
Sep 1, 1996·British Journal of Anaesthesia·S Al RamadhaniS A Ramadhani
May 27, 2005·Masui. The Japanese journal of anesthesiology·Tetsuro IsadaSatoru Fukuda
Jun 29, 2005·Anesthesiology·Gene N PetersonFrederick W Cheney
Dec 17, 2009·British Journal of Anaesthesia·J B Brodsky
Nov 22, 2013·Anesthesia and Analgesia·Farhad EtezadiReza Shariat Moharari
Feb 11, 2015·Canadian Journal of Anaesthesia = Journal Canadien D'anesthésie·Rolf SchuepbachKurt Ruetzler

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NCT02988336

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